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Flexible carbon-coated paper electrokinetic generator with Schottky-junction Electrochim. Acta (IF 5.5) Pub Date : 2024-09-16 Zheng Liu, Qingyuan Liu, Xinzhe Liu, Guohua Liu
Simulating transpiration effect to harvest electricity has attracted continued interest. However, it is limited to directional water/ions transport that shrinks the application scenario. Herein, we propose a new carbon-coated paper electrokinetic generator with Schottky-junction to induce the electricity. The electrical double layer (EDL) forms at carbon-water interface due to the wetting paper that
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Rapid electrodeposition synthesis of partially phosphorylated cobalt iron phosphate for application in seawater overall electrolysis Electrochim. Acta (IF 5.5) Pub Date : 2024-09-16 Jiayang Cai, Dezhi Qu, Xiong He, Pingping Su, Qianqian Dong, Yuhao Li, Baoning Zhu, Shuangwei Yu
To obtain hydrogen energy from seawater, it is of utmost importance to design an efficient bifunctional electrocatalyst that can be produced on a large scale and in a rapid manner. In this work, iron cobalt phosphate (CoFe-EP/NF) for long-term efficient and stable seawater electrolysis were rapidly synthesized by a simple electrodeposition. The study showed that metal phosphides/phosphates provided
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Synergistic improvement of the sulfur redox reaction by MOF-driven dual-defect polyhedral Mn-doped Co1-xS embedded in an N-doped carbon composite host for practical lithium-sulfur batteries Electrochim. Acta (IF 5.5) Pub Date : 2024-09-16 Yutao Dong, Huaiqi Peng, Ziqian Jin, Shiyu Ma, Lifeng Han, Xia Sheng, Yunlai Ren, Lixia Xie, Xianfu Zheng, Xin Li, Jianmin Zhang
In the quest for practical sulfur hosts for lithium-sulfur batteries, a novel approach has been delineated. By meticulously adjusting the Mn:Co (1:5/1:9/1:1) ratio and the sulfidation temperature, a series of nitrogen-doped carbon nanopolyhedron composites have been synthesized, denoted as 1:9 Mn-Co1-xS-NC@NC, 1:5 Mn-Co1-xS-NC@NC, 1:1 Mn-Co1-xS-NC@NC, and Co1-xS-NC@NC. These materials, inheriting the
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Investigation on the reaction progress of titanium and lead chloride in NaCl-KCl melt Electrochim. Acta (IF 5.5) Pub Date : 2024-09-14 Jinming Hu, Yanqing Cai, Jing Guo, Xinggang Chen, Ying Xu
The in-situ preparation of NaCl-KCl-TiClx molten salt electrolyte was investigated by replacement of PbCl2 and Ti in a NaCl-KCl melt at 750 ℃. The reaction progress of PbCl2(3.38 wt.%) with excess Ti was monitored in real-time by a series of electrochemical techniques such as cyclic voltammetry, square wave voltammetry, and open circuit chronopotentiometry. The thermodynamic calculation and electrochemical
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Adaptive COF-PVDF composite artificial solid electrolyte interphase for stable aqueous zinc batteries Electrochim. Acta (IF 5.5) Pub Date : 2024-09-13 Vipada Aupama, Jinnawat Sangsawang, Wathanyu Kao-ian, Suttipong Wannapaiboon, Jirapha Pimoei, Warunyoo yoopensuk, Montree Opchoei, Zari Tehrani, Serena Margadonna, Soorathep Kheawhom
The cyclability of aqueous zinc (Zn) – based batteries is limited by the formation of dendrites and side reactions. Herein, this work presents a composite- artificial solid electrolyte interphase (ASEI) in two stages. Firstly, a covalent organic framework (COF) is synthesized via an interfacial reaction between aldehyde and amine linkers. Secondly, polyvinylidene fluoride (PVDF) is additionally coated
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Dual optimization of LiFePO4 cathode performance using manganese substitution and a hybrid lithiated Nafion-modified PEDOT:PSS coating layer for lithium-ion batteries Electrochim. Acta (IF 5.5) Pub Date : 2024-09-12 Mohamed M. Abdelaal, Mohammad Alkhedher
The energy storage market necessitates an increase in the specific capacity of battery materials, particularly cathodes, to meet growing demands. Manganese (Mn) substitution of lithium iron phosphate (LFP) cathodes presents a promising avenue, offering high specific capacity and operability at elevated voltages. However, during cycling, the dissolution of Fe/Mn ions into the electrolyte leads to capacity
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Hydrogen bond crosslinking hydrogel for high-performance ultra-low temperature MXene-based solid state supercapacitors Electrochim. Acta (IF 5.5) Pub Date : 2024-09-11 Huajun Xu, Xintong Liu, Guanyu Ma, Honglei Dong, Zhenxuan Zhao, Gang Chen, Yu Gao
The electrochemical performance of aqueous electrolytes at low temperatures is frequently suboptimal due to their low freezing point (0 °C). In this study, we constructed MXene-based ultra-low temperature polyvinyl alcohol/nanocellulose-H2SO4 (PVA/CNF-H2SO4) hydrogel electrolytes utilising hydrogen bonding between water molecules and nanocellulose. The process results in a reduction in the amount of
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Zr-based conversion film fabricated on cold rolled steel by separately providing zirconium and fluorine ions: Performance and mechanism study Electrochim. Acta (IF 5.5) Pub Date : 2024-09-11 Wei He, Xiang Gao, Ru Yan, Yan Wang, Houyi Ma
Controlling the concentrations of Zr4+ and F− in traditional Zirconium (Zr)-based film-formation solution is challenging due to their dependence on the hydrolytic equilibrium of H2ZrF6. In this study, Zr-based films were prepared on cold rolled steel surface through the film-formation solution prepared by mixing Zr(NO3)4 and different amount of HF. The electrochemical results demonstrated that the
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Mechanism of the hydrazine hydrate electrooxidation reaction on metallic Ni electrodes in alkaline media as revealed by electrochemical methods, online DEMS and ex situ XPS Electrochim. Acta (IF 5.5) Pub Date : 2024-09-10 Evgeniia A. Vorms, Vasiliki Papaefthymiou, Théo Faverge, Antoine Bonnefont, Marian Chatenet, Elena R. Savinova, Alexandr G. Oshchepkov
Metallic Ni surface was examined as a catalyst for the hydrazine hydrate oxidation reaction (HHOR) by cyclic voltammetry, chronoamperometry, and online differential electrochemical mass-spectrometry (DEMS). It was found that N2 is the sole gaseous product formed during the HHOR on Ni and 4 electrons are transferred in the process, which corresponds to a complete oxidation of the hydrazine molecule
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Tailoring a novel all-in-one host-guest solid-state electrochemiluminescence platform for selective detection of spermine using cucurbit-[6]-uril modified [Ru(bpy)3]2+ electrode Electrochim. Acta (IF 5.5) Pub Date : 2024-09-10 Selvaraj Paramasivam, Sanjeev Kumar Kannan, Krishnan Giribabu, Murugavel Kathiresan, Senthil Kumar Shanmugam
Herein, a novel solid-state electrochemiluminescence (ECL) based on electrochemically incorporated [Ru(bpy)3]2+ on nafion modified glassy carbon electrode ([Ru(bpy)3]2+-Nafion/GCE) followed by chemisorption of cucurbit-[6]-uril (CB-[6]) on Ru(bpy)3]2+-Nafion/GCE (as CB-[6]-[Ru(bpy)3]2+-Nafion/GCE) has been developed for selective sensing of spermine (SPM) which belongs to the class of aliphatic biogenic
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A high-power hybrid carbon nanotube/three-dimensional reduced graphene oxide glucose/O2 enzymatic biofuel cell Electrochim. Acta (IF 5.5) Pub Date : 2024-09-10 Arman Amani Babadi, Rafieh Fakhlaei, Shahrooz Rahmati, Shuang Wang, Wan Jefrey Basirun
Long-lasting, high-performance enzymatic biofuel cells (EBFCs) are among the most promising candidates for renewable and green power generation. There are two main drawbacks to EBFCs: 1) short enzyme lifetime due to the enzyme's (protein) denaturation; and 2) low electron transfer efficiency as the enzyme's active site is deeply buried inside the non-conductive protein structure of the enzyme. In this
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The high-rate cycling stability of the LiFe0.6Mn0.4PO4/C cathode material is enhanced through in-situ Nb-doping Electrochim. Acta (IF 5.5) Pub Date : 2024-09-10 Dongdong Kong, Haijun Chen, Fuzhong Wu, Renguo Zhang, Jian Li, Yi Mai, Yawei Wei, Jiexi Wang, Xinyi Dai
LiFe0.6Mn0.4PO4/C, due to its low cost and safety advantages, is gradually becoming a safe and reliable commercial lithium battery storage material. However, its lower capacity at high rates and poor cycle performance limit its further industrial application. To address this, this work used a one-step solvothermal method to prepare Li(Fe0.6Mn0.4)1‑xNbxPO4 (x = 0, 0.01, 0.02, 0.03) cathode materials
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Synthesis, optimization, electrochemical and electrochromic properties of Zr-doped NiO films by chemical spray pyrolysis Electrochim. Acta (IF 5.5) Pub Date : 2024-09-10 Yuanyuan Tian, Hui Wang, Shengli Liu, Bo Zhang
Zirconium (Zr)-doped NiO films with different contents were successfully synthesized via the chemical spray pyrolysis technique. The structure, morphology, optical and electrochemical behaviors of these films were investigated by X-ray diffraction (XRD), Raman spectrometer, scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), UV–Vis-NIR spectrophotometry, cyclic voltammetry (CV)
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In situ polymerization preparation of K0.5Mn2O4·1.5H2O/PDA composite with excellent zinc storage performance Electrochim. Acta (IF 5.5) Pub Date : 2024-09-10 Shuo Li, Junsheng Zhu
In this study, the K0.5Mn2O4·1.5H2O/polydopamine composite (KMO/PDA) with a core-shell configuration has been synthesized through a straightforward in-situ polymerization process at room temperature. In KMO/PDA, KMO is uniformly coated by PDA, which can suppress the volume expansion and dissolution of KMO efficiently. As a result, the KMO/PDA composite demonstrates high reversible zinc storage performance
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Bidirectional extracellular electron transfers by Stenotrophomonas sp. and by Serratia marcescens via tunable extracellular polymeric substances at low or at high solution conductivity Electrochim. Acta (IF 5.5) Pub Date : 2024-09-10 Haotian Huang, Zuo Gai, Qiang Wang, Liping Huang, Yong Shi, Feng Tan, Gianluca Li Puma
Unearthing robust electrochemically active bacteria (EAB) with bidirectional extracellular electron transfer (EET) is increasingly attractive for the treatment of wastewaters characterized by a diversity of ions and limited by either carbon/electron sources or electron acceptors in single-chamber bioelectrochemical systems (BESs). Here, both Stenotrophomonas sp. YS1 and Serratia marcescens Q1 biofilms
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3D inkjet printing of hybrid electroactive ink based on molecularly imprinted polymers for lipopolysaccharides detection Electrochim. Acta (IF 5.5) Pub Date : 2024-09-08 Ana-Lorena Neagu, Ana-Mihaela Gavrila, Andreea Miron, Iulia Elena Neblea, Catalin Zaharia, Petru Epure, Hugues Brisset, Horia Iovu, Andrei Sarbu, Tanta-Verona Iordache
A hybrid electroactive ink based on molecularly imprinted polymer (MIP) hollow microparticles, zinc oxide nanoparticles (ZnO NPs) and conductive carbon paste (CP) is reported herein for the first time. The MIP/ZnO NPs/CP and corresponding non-imprinted NIP/ZnONPs/CP modified inks were screen-printed on plastic substrates via 3D inkjet technology to cover around 40 working screen-printed carbon electrodes
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In situ multilevel covalent crosslinking binder with high ionic conductivity for high-performance Si anodes Electrochim. Acta (IF 5.5) Pub Date : 2024-09-08 Yaozong Yang, Nana Yao, Boyang Fu, Zhaolin Li, Jie Wang, Ying Luo, Jingying Xie, Hailei Zhao
Silicon (Si) anode has emerged as a promising material for high-energy-density lithium-ion batteries (LIBs), thanks to its high theoretical capacity. However, the commercial application of Si anodes is hindered by inadequate cycling performance and poor interfacial stability, stemming from unfavorable stress conditions. In this study, a multiple crosslinking binder with high ionic conductivity is proposed
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Influence of cationic species on the electrochemical performance of quinone derivatives Electrochim. Acta (IF 5.5) Pub Date : 2024-09-07 Rebecka Löfgren, Felicia Zaar, Rikard Emanuelsson, Maria Strømme, Martin Sjödin
Quinones exhibit considerable promise as active components in energy storage applications, owing to their high theoretical storage capacity, well-defined redox potentials, rapid reaction kinetics, structural diversity, and proficiency in cycling both protons and metal ions. In this study, six quinone derivatives underwent comprehensive electrochemical and computational analyses using TBA+, H+, Li+
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Development of novel plasma process for modification of solid and liquid interfaces for high-energy-density Cu-MnOx supercapacitor electrodes Electrochim. Acta (IF 5.5) Pub Date : 2024-09-07 Mitchell Barclay, Konstantin Firestein, Sagar Dhananjay Jadhav, Nunzio Motta, Kostya (Ken) Ostrikov
Supercapacitors are known for their fast-charging capabilities and high-power density, though their energy density is lower compared to common batteries. Modifying the interface of manganese oxide (MnOx) electrodes by incorporating copper (Cu) is a promising method to enhance the energy density of supercapacitors, though it is not yet fully implemented due to the high electrical resistance inherent
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Manipulating micropore structure of hard carbon as high‐performance anode for Sodium-Ion Batteries Electrochim. Acta (IF 5.5) Pub Date : 2024-09-07 Yihao Pan, Bingyang Ji, Lexin Wang, Yiran Sun, Longchen Li, Xiaozhong Wu, Pengfei Zhou
Hard carbon (HC) is the most promising anode material for sodium-ion batteries (SIBs), but its low initial coulombic efficiency (ICE) and specific capacity limit its practical application. Herein, a chemical vapor deposition (CVD) strategy is used to address these challenges via filling the micropores of sucrose-based HC with pyrolysis by-products from acetonitrile, thereby reducing the specific surface
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Transport numbers of ion-exchange membranes in ternary mixtures of KCl, H2O and ethanol relevant for electrodialysis and desalination processes Electrochim. Acta (IF 5.5) Pub Date : 2024-09-07 Simon B.B. Solberg, Øivind Wilhelmsen, Odne S. Burheim
Understanding the transport phenomena in electrolyte mixtures involved in electrochemical processes is of utmost importance for the modelling and improvement of battery technology, fuel cells, ion-exchange membrane processes, and much more. In this work, we derive relations and present methods for the analysis of electric potential measurements of concentration cells and ion-exchange membrane permselectivity
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Exploring the role of trace Indium in enhancing the cyclic stability and initial capacity of Lithium–ion cathodes Electrochim. Acta (IF 5.5) Pub Date : 2024-09-07 Juwon Park, Dimpul Konwar, Won Myung Choi, Hiram Kwak, Yoon Seok Jung, Byungchan Han
Developing Ni content over 80 % in Li–ion cathodes for batteries is crucial for achieving higher energy density. However, these materials suffer from instability and rapid capacity loss during repeated charging and discharging cycles. This is primarily due to unwanted structural changes caused by Ni2+ and Li+ ions mixture within the material. This study presents a novel approach using trace amounts
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Enhancing electrochemical energy storage in Zinc hybrid capacitors using 3D-printed GO/AC electrodes with Oxygen functional groups Electrochim. Acta (IF 5.5) Pub Date : 2024-09-07 Mengya Wang, Ningshuang Zhang, Junfei Zhou, Hongzeng Dou, Xiaoling Cui, Shiyou Li
Zinc-ion hybrid capacitors (ZIHCs), promising for energy storage, encounter challenges such as mismatched positive and negative electrode capacities. Addressing this, increasing the thickness of positive electrode proves effective. However, traditional thick electrodes show an extended ion diffusion paths, which slows reactions and decreasing charge-discharge efficiency. Innovations in electrode structures
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Theoretical and experimental studies on 2D β-NiS battery-type electrodes for high-performance supercapacitor Electrochim. Acta (IF 5.5) Pub Date : 2024-09-07 Diwakar Singh, Manopriya Samtham, Neeta Bisht, Ekta Choudhary, Vikesh Kumar, Ravindra Jangir, Neeleshwar Sonnathi, Santosh S. Hosmani, Ankita Katre, Rupesh S. Devan
Recently, quirky features and eccentric structures of transition metal sulfides have grasped great attention to remove roadblocks and unwrap fresh avenues for electrodes in energy storage devices. Herein, we developed a 2D beta phase nickel sulfide nanosheets (2D β-NiS NSs) electrode with remarkable enhancement in charge storage properties. When served as active electrodes for electrochemical tests
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Lithium fluoride additive helps construct stable electrode-electrolyte interfaces to boost the performance of Mg-S batteries Electrochim. Acta (IF 5.5) Pub Date : 2024-09-07 Abdel Monem Mostafa, Taha A. Hanafy, Mostafa A. Moselhy, S. Elrabaie, M.M. El-Desoky, Wei Xing, E. Sheha
Most magnesium electrolytes react with the Mg anode surface to form a non-favorable passive layer that inhibits shuttling of the Mg ions and results in the short cycle life of the Mg cells. In this work, we probe LiF as an effective electrolyte additive to address the challenges of electrolyte degradation, Mg anode passivation, and polysulfide shuttle. The key to our strategy lies in modifying the
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A crucial investigation on the N, S dual-doped rGO for the electrochemical detection of mutilfarious analytes and energy storage behaviour in dual redox additives Electrochim. Acta (IF 5.5) Pub Date : 2024-09-06 Sangamithirai D, Suresh Balaji S, Gopi Krishna K R, Vignesh V, Pandurangan A
The dual application-based scenario in electrochemistry has gained substantial reliability and benefits across various domains. In this study, N, S dual-doped graphene (NSGO) was synthesized via hydrothermal method and utilized for supercapacitor and electrochemical sensing applications. For electrochemical sensing, the NSGO-modified glassy carbon electrode (NSGO/GCE) was used to detect 2,4-dinitrophenol
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Ni and Co-based bifunctional electrocatalysts supported on TiO2@C for oxygen evolution and reduction reactions Electrochim. Acta (IF 5.5) Pub Date : 2024-09-06 Diana M. Fernandes, Victor K. Abdelkader-Fernandez, Ali Fayad, Conchi O. Ania, Fabiano R. Praxedes, Silvania Lanfredi, Enrique Rodríguez-Castellón, Elena Rodríguez-Aguado, Juan C. Hernández-Garrido, Juan J. Quintana-González, Po S. Poon, Juan Matos
In the search for affordable, ecofriendly, and sustainable catalysts for energy-related processes, series of Ni and Co-based bifunctional hybrid electrocatalysts supported on TiO2@C were prepared and studied in the oxygen evolution (OER) and oxygen reduction reactions (ORR). The hybrid TiO2@C supports were prepared using three biomass precursors: furfural, chitosan and saccharose. The nature and dispersion
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Electrocatalytic oxidation of glycerol performed by nickel/cobalt alloys: Adding value to a common subproduct of chemical industry Electrochim. Acta (IF 5.5) Pub Date : 2024-09-06 Jonas Massaneiro, Tatiana Lima Valério, Diogo Silva Pellosi, Bruno J. Gonçalves da Silva, Marcio Vidotti
The present work shows the electrocatalytical performance of nickel/cobalt alloys towards the conversion of glycerol into higher value molecules, such as glycolic acid, oxalic acid, maleic acid, diethylene glycol and ethylene glycol, identified by chromatographic technique. To do so, the alloy was directly electrodeposited on graphite electrodes, which is a simple, readily available and cheap material
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Bio-electricity production from fibroblasts and their cultivation medium Electrochim. Acta (IF 5.5) Pub Date : 2024-09-05 Yaniv Shlosberg, Oren Tchaicheeyan, Ayelet Lesman
The recent understanding of the critical future damage that might happen on earth by climate change has urged scientists to initiate new creative ideas for clean energy technologies that will reduce carbon emissions. A promising approach is the utilization of living cells as biocatalysts in bio-electrochemical cells (BECs). This concept has been intensively studied for micro-organisms but not for mammalian
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Reversible storage of tetraethyl ammonium cation in CFx-based cathode Electrochim. Acta (IF 5.5) Pub Date : 2024-09-05 Yuxiang Liu, Xinping Zhang, Yuhao Huang, Hongyu Wang
Carbon fluorides (CFx) are considered as the potential cation storage materials in alkali metal-based battery systems because of the high theoretical specific capacity (865 mAh g-1 when x = 1). However, the reversibility of cathode reaction is seriously disturbed by the strong metal-fluorine interactions among the electrode products (e.g., LiF). By contrast, the relatively weak N-F bond makes the CFx-based
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Bimetallic MoFe phosphide catalysts for the hydrogen evolution reaction Electrochim. Acta (IF 5.5) Pub Date : 2024-09-05 A. Guboova, R. Orinakova, M Streckova, N. Podrojkova, M. Parackova, O. Milkovic, L. Medvecky, V. Girman, T. Bystron
In this work, highly efficient and stable (bi)metallic phosphides were prepared by a facile, flexible, and controllable sol-gel method followed by sintering. This novel approach allowed to avoid complicated and dangerous phosporization using, e.g. red phosphorus. The doping of the MoP catalysts with Fe was used to further boost their catalytic performance. Monometallic MoP and Mo3P, as well as bimetallic
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Viologen derivative-induced graphene hybrid biofilms for high-performance microbial fuel cells Electrochim. Acta (IF 5.5) Pub Date : 2024-09-05 Zeguo Fan, Jiale Sun, Xiaoqi Fan, Yuxin Wang, Shujun Qi, Yuanyuan Jing, Rong-Bin Song, Zhaohui Li
The development of high-quality hybrid biofilms is essential for the performance improvement of microbial fuel cells (MFCs). Here, a novel graphene hybrid biofilm has been developed for MFCs by utilizing a positive-charged viologen derivative (4,4′-(thiazole[5,4-d]thiazol-2,5-diyl)bis(1-(4-nitrobenzyl)pyridine-1-ium)dichloro) as dual-functional component. Before the reduction of graphene oxide by bacterial
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Long-term dechlorination performance of the Dehalococcoides-augmented bioelectrochemical system and the functional microorganism identification Electrochim. Acta (IF 5.5) Pub Date : 2024-09-05 Lingyu Meng, Ryuya Tomita, Zhiling Li, Naoko Yoshida
Electroactive bacteria in microbial communities contribute to electrode-driven dechlorination by Dehalococcoides (Dhc). To pre-argument Dhc to bioelectrochemical system to construct the functional consortia is a promising strategy for achieving the complete dechlorination. However, the stability of the long-term dechlorination performance is poorly understood. And the role of electroactive bacteria
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Single, binary, and ternary nanocomposite electrodes of reduced graphene oxide@polyaniline@Co-Prussian analog for supercapacitors Electrochim. Acta (IF 5.5) Pub Date : 2024-09-04 Hala M. Mohamed, Mohamed M. Abo-Aly, Saad M. Abdel Wahab, Asmaa A.I. Ali, Mahmoud A. Mousa
The present work includes fabrication of a binary and ternary and composites of reduced graphene oxide (RGO), Polyaniline (Pani), and cobalt Prussian blue analog (Co-PA) for high performance supercapacitor. The materials were characterized using XRD, SEM, FT-IR, and BET techniques. The results confirm the formation of the desired nanocomposites. The electrochemical properties were evaluated in three
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Quantitative study of electrochemical adsorption and oxidation on Pt(111) and its vicinal surfaces Electrochim. Acta (IF 5.5) Pub Date : 2024-09-04 Francesc Valls Mascaró, Marc T.M. Koper, Marcel J. Rost
Hydrogen and oxygen are key intermediates in many relevant electrochemical reactions such as the hydrogen oxidation and the oxygen reduction on platinum, which are the main processes in hydrogen fuel cells. Achieving improved catalyst design requires thus a deep understanding of their adsorption behavior. However, the understanding of the interaction of hydrogen and oxygen with platinum step sites
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Enhancement of ionic conductivity in electrically conductive membranes by polarization effect Electrochim. Acta (IF 5.5) Pub Date : 2024-09-04 Ivan A. Kharchenko, Nikita V. Vaulin, Mikhail M. Simunin, Semen A. Mareev, Ivan V. Nemtsev, Alexandr S. Goltaev, Denis V. Lebedev, Ilya I. Ryzhkov
Electrically conductive nanoporous membranes represent a class of stimuli–responsive materials, which selectivity/permeability characteristics can be adjusted by varying the surface potential. In this work, we perform a comprehensive theoretical and experimental study of ionic conductivity of such membranes. The 2D Space charge and 1D Uniform potential models are used to describe the ion transport
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Effect of crystallite size on lithium storage performance of high entropy oxide (Cr0.2Mn0.2Co0.2Ni0.2Zn0.2)3O4 nanoparticles Electrochim. Acta (IF 5.5) Pub Date : 2024-09-04 Changqing Jin, Yulong Wang, Ping Lu, Haobin Dong, Yongxing Wei, Ruihua Nan, Zengyun Jian, Zhong Yang, Qingping Ding
High-entropy oxides (HEOs), known for their high theoretical capacity and structural stability, are considered promising anode materials for next-generation lithium-ion batteries (LIBs). In this research, we synthesized a novel spinel-type HEO, (Cr0.2Mn0.2Co0.2Ni0.2Zn0.2)3O4, using a solution combustion method. By adjusting the quantity of the combustion agent, we produced samples with varying crystallite
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PEO kaolinite intercalation interface accelerates lithium-ion transfer for all-solid-state lithium metal batteries Electrochim. Acta (IF 5.5) Pub Date : 2024-09-03 Huiyao Li, Zhuoran Ao, Yu Wan, Yaru Liang, Peiguang Li, Youlan Zou
The improvement of ionic conductivity and Li dendrite inhibition capability of poly(ethylene oxide)(PEO)-based solid polymer electrolytes(SPEs) is urgent for the development of all-solid-state lithium metal batteries (ASSLMBs). Here, intercalated composite consisted with PEO polymer chains inserted into the clay gallery of the formamide intercalated kaolinite (KM) is formed. Due to this alternating
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Material parameters affecting Li plating in Si/graphite composite electrodes Electrochim. Acta (IF 5.5) Pub Date : 2024-09-03 Lioba Boveleth, Adrian Lindner, Wolfgang Menesklou, Timo Danner, Arnulf Latz
Silicon is a frequently used active material in the negative electrode of lithium-ion batteries which provides significant improvements in the energy density. Due to large volume changes during cycling, it is typically mixed with graphite. Understanding the interactions of composite materials during battery operation is key to optimizing battery performance and predicting aging phenomena. Even though
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Nickel oxide/nickel nanohybrids for oxygen and hydrogen evolution in alkaline media Electrochim. Acta (IF 5.5) Pub Date : 2024-09-03 Fabiola Navarro-Pardo, Gurpreet Singh Selopal, Alma P. Hernandez-Gonzalez, Ebrahim Ghasemy, Jiabin Liu, Kulbir K. Ghuman, Ana C. Tavares, Zhiming M. Wang, Federico Rosei
Ni-based materials are cost-efficient electrocatalysts for the oxygen and hydrogen evolution reactions (OER and HER). Specifically, high-valence nickel oxides have been recently identified as highly active for both reactions; however, the origin of their activity during operation, particularly towards the HER, is still undefined. Herein, electrodeposition was used to produce Ni-based electrocatalysts
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Heterogeneous atoms mediated formation MnCo2S4/PNG heterostructures for high-performance supercapacitors Electrochim. Acta (IF 5.5) Pub Date : 2024-09-03 Guifang Li, Dingrong Deng, Xiaohong Fan, Ye Zeng, Lishan Jia, Qi-Hui Wu
Transition metal sulfides are considered as potential electrode materials for high performance energy storage devices. However, structural instability during electrochemical reactions has seriously hindered their wide applications. In this study, we demonstrate that MnCo2S4/PNG (N- and P-doped graphene) composite constructed with hetero-atomic induction exhibits excellent morphological stability. Heterogeneous
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Hydrogen states and contents in superelastic TiNi alloy after cathodic polarization Electrochim. Acta (IF 5.5) Pub Date : 2024-09-03 Takumi Haruna, Daiki Morihashi, Youhei Hirohata
The superelastic TiNi alloy sometimes undergo failure under wet environments owing to hydrogen absorption and/or hydride formation; however, the effects of electrochemical conditions such as potential and pH and the hydrogen state and content on the susceptibility of the material to such degradation processes remain unveiled. In this study, the hydrogen content in the solid-solution state and hydride
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3D structured lithiophilic current collector with lithiation nucleation overpotential near 0 V for dendrite-free lithium metal anode Electrochim. Acta (IF 5.5) Pub Date : 2024-09-03 Yinjie Fu, Pengchen Xiang, Duo Chen, Juhong He, Tengyu Yao, Laifa Shen
The poor lithium affinity of most metal skeletons leads to uneven electric field distribution, resulting in the notorious Li dendrite growth. Herein, a 3D structured Cu mesh@Ag current collector is introduced using a simple chemical plating method to enable dendrite-free Li anode. The high electronic conductivity and matrix pore structure of Cu mesh can alleviate the local current density and provide
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Flexible electrochemical sensor with 2D-on-2D layered structure for real-time on-site intelligent detection of carbendazim residues on fresh tea leaves Electrochim. Acta (IF 5.5) Pub Date : 2024-09-03 Binfang Wu, Yunpeng Li, Yufeng Shi, Hua Zhou, XinYu Tang, Yuxiang Yuan, Xintao Leng, Jiangdong Yin, Yongbing Long, Haitao Xu, Yubin Lan
Excessive use of carbendazim (CBZ) for controlling fungal disease may result in pesticide residues in growth environments. There is an urgent requirement for real-time detection of CBZ content to enable rapid assessment of pesticide residues. Herein, a novel electrochemical sensor was created, which utilizes a laser-induced graphene (LIG) electrode modified with two-dimensional (2D) tungsten disulfide
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Electrodeposited Pt nanoparticles loaded on support composites of metal-organic frameworks and carbon quantum dots for the enhancement of alcohol electrooxidation Electrochim. Acta (IF 5.5) Pub Date : 2024-09-02 Surin Saipanya, Saranphong Yimklan, Paralee Waenkaew, Li Fang, Jaroon Jakmunee, Suwaphid Themsirimongkon
Metal-organic frameworks comprising divalent metal (M)-linked 4,4′-bipyridine (bpy), {[CuII4(bpy)3(OH)2(mal)3]·4H2O}n(Cubpy) and Ni2(bpy)3(NO3)4(H2O)4(Nibpy) were modified with carbon quantum dots (Mbpy/CQD; M = Cu, Ni) to prepare a composite support. Then, platinum (Pt) nanoparticles were electrodeposited onto the modified Mbpy/CQD support for the preparation of Pt-based catalysts (Pt/Mbpy/CQD) for
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Highlighting the impact of blocking monolayers on DNA electrochemical sensors. Theoretical and experimental investigations under flow conditions Electrochim. Acta (IF 5.5) Pub Date : 2024-09-02 Martina Freisa, Claire Poujouly, Isabelle Le Potier, Thi Hong Nhung Dinh, Laurent Couraud, David Bouville, Catherine Sella, Laurent Thouin, Jean Gamby
A model is proposed to account for the influence of electrode surface modifications in electrochemical DNA sensors operating under flow conditions. With blocking self-assembled monolayers of double-stranded DNA, the performance of the electrochemical transduction signal in the presence of a redox mediator is generally attributed to the rate of long-range electron transfer or to the screening effects
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Observation of monotonic surface charging at polycrystalline platinum-electrolyte interface using streaming current method Electrochim. Acta (IF 5.5) Pub Date : 2024-09-01 Jesus Lopez Ochoa, Prantik Saha, Iryna V. Zenyuk
Surface charging characteristics at polycrystalline Pt-electrolyte interfaces were studied using a novel combination of electrochemical techniques and electrokinetic streaming current methods developed by our group [Saha et al., 2019]. Surface charge typically increases with increasing electric potential on a metal, and this trend is commonly referred to as monotonic charging. Based on theoretical
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Quantitative performance analysis of anion-exchange membrane fuel cells with in-plane and through-plane water transport Electrochim. Acta (IF 5.5) Pub Date : 2024-09-01 Fangju Li, Shanshan Cai, Xiaobing Luo, Zhengkai Tu, Siew Hwa Chan
Effective water management is crucial in anion-exchange membrane fuel cells (AEMFCs) due to water's dual role as a reactant during alkaline oxygen reduction and a product of alkaline hydroxide oxidation. Meanwhile, both hydroxide conduction and water transport in polymer electrolytes are highly dependent on the hydration level. Therefore, a three-dimensional multi-physics model is developed to investigate
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A practical method for the in-situ estimation of the effective thermal resistance of gas diffusion layers in PEMFC Electrochim. Acta (IF 5.5) Pub Date : 2024-09-01 V. Leduc, G. Sdanghi, R. Bligny, J. Dillet, S. Didierjean, T. Schmitt, M. Hanauer, U. Sauter, G. Maranzana
The membrane electrode assembly of a PEM fuel cell is hotter than the gas feeding plates because heat is generated within it, and the diffusion layers are thermally resistive. The temperature gradient created, which increases as a function of the current density, is useful for evacuating the water produced in vapor form. This water transport mechanism is known as the “heat pipe effect”. The temperature
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Immobilized proline-based electro-organocatalyst for the synthesis of bis-β-diketone via Knoevenagel condensation reaction Electrochim. Acta (IF 5.5) Pub Date : 2024-09-01 Ditto Abraham Thadathil, Anitha Varghese
In the quest for more sustainable chemical processes, we devised a technique using electro-organocatalysis to synthesize bis--diketone compounds via Knoevenagel condensation of benzaldehyde and dimedone. Our approach involves a modified electrode fabricated anchoring L-proline onto a carbon fiber paper electrode supported by poly-3,4-diaminobenzoic acid (PDABA), which enhances efficiency in addition
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Failure mechanism of LiCoO2/graphite pouch cell at high temperature Electrochim. Acta (IF 5.5) Pub Date : 2024-09-01 Junyan Li, Tongen Lai, Jiakun Chen, Xinxian Zhang, Tianwei Chen, Tinglei Huang, Jiachang Cheng, Weishan Li, Min Chen
Lithium cobalt oxide (LiCoO₂) and graphite are considered the optimal cathode and anode, respectively, for lithium-ion batteries (LIBs) in digital 3C products, including computers, communication devices, and consumer electronics. The underlying failure mechanism of commercial LiCoO₂/graphite LIBs at high temperatures has been elucidated through non-destructive and disassembling characterizations. The
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Enhanced electrochemical performance of 3D-printed electrodes via blue-laser irradiation and (electro)chemical treatment Electrochim. Acta (IF 5.5) Pub Date : 2024-08-31 Mayane S. Carvalho, Raquel G. Rocha, Amanda Beatriz Nascimento, Diele A.G. Araújo, Thiago R.L.C. Paixão, Osmando F. Lopes, Eduardo M. Richter, Rodrigo A.A. Muñoz
Extrusion-based 3D printing technologies, especially fused filament fabrication (FFF) using conductive filaments, have significantly advanced in electroanalytical applications by enabling the fabrication of electrochemical sensors. Nonetheless, 3D-printed electrodes produced from commercially available conductive filaments (e.g., polylactic acid containing carbon black - CB/PLA) often contain a low
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Laser-induced degradation of carbon nanotubes during in situ-Raman spectroscopy at high electrochemical potentials Electrochim. Acta (IF 5.5) Pub Date : 2024-08-30 Simon-Johannes Kinkelin, Matthias Steimecke, Michael Bron
-Raman spectro-electrochemistry is frequently used for the investigation of carbon electrode materials, contributing to our fundamental understanding of reaction pathways, surface intermediates or degradation processes. A challenge when using the -Raman technique is to ensure that the measurement results are not influenced by the irradiation with the high-energy laser beam. Therefore, reference experiments
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Nickel hydroxide nanosphere decorated reduced-TiO2 nanotubes as supercapacitor electrodes Electrochim. Acta (IF 5.5) Pub Date : 2024-08-30 Sensu Tunca, Marc Parrilla, Karthick Raj AG, Gert Nuyts, Sammy W. Verbruggen, Karolien De Wael
A straightforward electrochemical method was developed to modify titanium dioxide nanotubes (TiO NTs), creating oxygen vacancies via electrochemical reduction (ER) and depositing nickel hydroxide nanospheres (Ni(OH) NSs). This was done to discover the electrochemical properties of a TiO NTs based binder-free supercapacitor electrode. The improved conductivity of the reduced TiO NTs (R-TiO NTs) electrode
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Electrodeposition of bismuth, tellurium and bismuth telluride through sub-10 nm mesoporous silica thin films Electrochim. Acta (IF 5.5) Pub Date : 2024-08-30 Li Shao, Nikolay Zhelev, Wenjian Zhang, Gillian Reid, Ruomeng Huang, Philip N. Bartlett, Andrew L. Hector
Templated electrodeposition is an efficient technique for the bottom-up fabrication of nanostructures and can effectively control the size and shape of the electrodeposits. Here, mesoporous silica thin films with highly ordered mesopores and a regular three-dimensional mesostructure were synthesised as templates for electrodeposition. The mesoporous silica films have small mesopores (∼8 nm) and complex
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Transition metal embedded MoS2 as efficient trifunctional electrocatalyst: A computational study Electrochim. Acta (IF 5.5) Pub Date : 2024-08-30 K. Simmy Joseph, Shweta Dabhi
In the advancement of electrochemical energy systems, multifunctional catalysts for the oxygen reduction reaction (ORR), hydrogen evolution reaction (HER), and oxygen evolution reaction (OER) are indispensable. Moreover, catalysts produced by incorporating transition metals into two-dimensional materials via substitutional modification have demonstrated remarkable efficacy. The present study examines
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Electrochemical dissolution behavior of cast and forged Ti2AlNb alloys in NaCl and NaNO3 electrolytes Electrochim. Acta (IF 5.5) Pub Date : 2024-08-30 Jinzheng Li, Dengyong Wang, Di Zhu
Although TiAlNb alloy has numerous exceptional properties that make it one of the most promising materials in the aerospace field, it also presents significant challenges to traditional machining. Nevertheless, electrochemical machining (ECM) presents distinctive advantages when it comes to processing difficult-to-cut materials. Regrettably, the electrochemical dissolution behavior of TiAlNb alloy
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Enhanced electrochemical performances of ternary polypyrrole/MXene/Gum arabic composites as supercapacitors electrode materials Electrochim. Acta (IF 5.5) Pub Date : 2024-08-29 Nadia Khan, Rizwan Ullah, Mehtab Khan, Almas
The development of supercapacitor electrodes for high energy storage applications requires the use of ternary composites made of PPy, Mxene, Gum Arabic (PPy/Mxene/GA) these materials are special because they have new characteristics like cyclic stability, and high specific capacitance. The pure PPy, PPy/Mxene and PPy/Mxene/Gum Arabic show the shifting and appearance of new peaks in UV-Visible spectra
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Electrochemically-driven CO2 and N2 capture by Azotobacter vinelandii Electrochim. Acta (IF 5.5) Pub Date : 2024-08-29 Julieta Agustina Crisci, Leonardo Curatti, Juan Pablo Busalmen
has been studied for over 100 years since its discovery as an obligate aerobic N-fixing organism. This model bacterium enabled remarkable discoveries related to aerobic N-fixation, respiration, microbial physiology, H production and assimilation, and enzyme kinetics, among others. Additionally, it is of great industrial interest due to its ability to produce bioplastics and alginate, and N-fixation
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Electrocatalysis of hydrogen and oxygen electrode reactions in alkaline media by Rh-modified polycrystalline Ni electrode Electrochim. Acta (IF 5.5) Pub Date : 2024-08-29 Ljubinka Vasić, Nikola Tričković, Zaharije Bošković, Aleksandar Z. Jovanović, Dana Vasiljević-Radović, Natalia V. Skorodumova, Slavko V. Mentus, Igor A. Pašti
Developing novel electrocatalysts for energy conversion applications is of utmost importance for reaching the energy security of modern society. Here we present a comprehensive investigation of rhodium-modified polycrystalline nickel as an electrocatalyst for hydrogen and oxygen electrode reactions in alkaline media. The surface modification of nickel electrodes was achieved by facile galvanic displacement