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Sustainable energy harvesting and breath sensing with electrospun triboelectric nylon-6 J. Phys. Energy (IF 6.9) Pub Date : 2024-02-28 E J Jelmy, Mathew Sunil, Chitra Kandappanthodi, P Rincy, K J Saji, Suresh C Pillai, Honey John
A high-performance triboelectric nanogenerator (TENG) has been developed for breath sensing applications, utilizing tribopositive electrospun nylon-6 nanofibers and tribonegative fluorinated ethylene propylene (FEP). The optimization toward the development of electrospun nylon-6-based TENG includes a range of factors such as the applied force and frequency on tribo responses, the thickness of the fiber
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A phenomenological figure of merit for photovoltaic materials J. Phys. Energy (IF 6.9) Pub Date : 2024-02-15 Andrea Crovetto
I derive a figure of merit (FOM) ΓPV to estimate the maximum efficiency attainable by a generic non-ideal photovoltaic (PV) absorber in a planar single-junction solar cell. This efficiency limit complements the more idealized limits derived from fundamental physics, such as the Shockley–Queisser (SQ) limit and its subsequent generalizations. Specifically, the present FOM approach yields stricter efficiency
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Evaluating 3D printed mesh geometries in ceramic LiB electrodes J. Phys. Energy (IF 6.9) Pub Date : 2024-02-14 J R Marín-Rueda, J F Valera-Jiménez, J M Ramos-Fajardo, I M Peláez-Tirado, S Tair, M Castro-García, J Canales-Vázquez, J C Pérez-Flores
Additive manufacturing techniques have the potential to promote a paradigmatic change in the electrode fabrication processes for lithium-ion batteries (LiBs) as they may offer alternative component designs to boost their performance or to customise the application. The present research work explores the use of low-cost fused filament fabrication (FFF) 3D printing to fabricate Li4Ti5O12 (LTO) mesh electrodes
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Optical, thermal, and electrical analysis of perovskite solar cell with grated cds and embedded plasmonic Au nanoparticles J. Phys. Energy (IF 6.9) Pub Date : 2024-02-14 Ohidul Islam, M Hussayeen Khan Anik, Sakib Mahmud, Joyprokash Debnath, Ahsan Habib, Sharnali Islam
We propose a novel approach to enhance the performance of perovskite solar cells (PSCs) by incorporating grated Cadmium Sulfide (CdS) and plasmonic gold nanoparticles (Au NPs) into the absorber layer. The CdS grating acts as the electron transport layer and penetrates into the perovskite absorber layer, increasing the absorption of the active layer and reducing the electron–hole recombination rate
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Manipulating ionic conductivity through chemical modifications in solid-state electrolytes prepared with binderless laser powder bed fusion processing J. Phys. Energy (IF 6.9) Pub Date : 2024-02-13 Katherine A Acord, Alexander D Dupuy, Qian Nataly Chen, Julie M Schoenung
Additive manufacturing of solid-state batteries is advantageous for improving the power density by increasing the geometric complexity of battery components, such as electrodes and electrolytes. In the present study, bulk three-dimensional Li1+x Al x Ti2−x (PO4)3 (LATP) electrolyte samples were prepared using the laser powder bed fusion (L-PBF) additive manufacturing method. Li3PO4 (LPO) was added
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Tailoring dielectric permittivity of epitaxial Gd-doped CeO2−x films by ionic defects J. Phys. Energy (IF 6.9) Pub Date : 2024-02-12 A Palliotto, Y Wu, A D Rata, A Herklotz, S Zhou, K Dörr, P Muralt, D-S Park
Engineering materials with highly tunable physical properties in response to external stimuli is a cornerstone strategy for advancing energy technology. Among various approaches, engineering ionic defects and understanding their roles are essential in tailoring emergent material properties and functionalities. Here, we demonstrate an effective approach for creating and controlling ionic defects (oxygen
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Integrating direct air capture with small modular nuclear reactors: understanding performance, cost, and potential J. Phys. Energy (IF 6.9) Pub Date : 2024-02-09 Luca Bertoni, Simon Roussanaly, Luca Riboldi, Rahul Anantharaman, Matteo Gazzani
Direct air capture (DAC) is a key component in the transition to net-zero society. However, its giga-tonne deployment faces daunting challenges in terms of availability of both financial resources and, most of all, large quantities of low-carbon energy. Within this context, small modular nuclear reactors (SMRs) might potentially facilitate the deployment of DAC. In the present study, we present a detailed
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2023 roadmap on ammonia as a carbon-free fuel J. Phys. Energy (IF 6.9) Pub Date : 2024-02-06 William I F David, Gerry D Agnew, René Bañares-Alcántara, James Barth, John Bøgild Hansen, Pierre Bréquigny, Mara de Joannon, Sofia Fürstenberg Stott, Conor Fürstenberg Stott, Andrea Guati-Rojo, Marta Hatzell, Douglas R MacFarlane, Joshua W Makepeace, Epaminondas Mastorakos, Fabian Mauss, Andrew Medford, Christine Mounaïm-Rousselle, Duncan A Nowicki, Mark A Picciani, Rolf S Postma, Kevin H R Rouwenhorst
The 15 short chapters that form this 2023 ammonia-for-energy roadmap provide a comprehensive assessment of the current worldwide ammonia landscape and the future opportunities and associated challenges facing the use of ammonia, not only in the part that it can play in terms of the future displacement of fossil-fuel reserves towards massive, long-term, carbon-free energy storage and heat and power
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Natural rubber based elastocaloric solid-state refrigeration device: design and performances of a single stage system J. Phys. Energy (IF 6.9) Pub Date : 2024-02-05 Marianne Sion, Jacques Jay, Gildas Coativy, Atsuki Komiya, Gaël Sebald
The elastocaloric effect denotes the ability of a material to release or absorb heat when the material is stretched and released respectively. This effect may be used to design an alternative cooling device. This work focuses on the development of a cooling device using natural rubber (NR) as the elastocaloric material. It consists of a solid–solid heat exchange between a cyclically stretched elastocaloric
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A compatibility study of protective coatings for temperature sensor integration into sodium-ion battery cells J. Phys. Energy (IF 6.9) Pub Date : 2024-02-02 Timothy A Vincent, Faduma M Maddar, Sheng Chao, Erdogan Guk, Jonathan E H Sansom, Begum Gulsoy, Mark Copley, Ivana Hasa, James Marco
Instrumented battery cells (i.e. those containing sensors) and smart cells (with integrated control and communication circuitry) are essential for the development of the next-generation battery technologies, such as Sodium-ion Batteries (SIBs). The mapping and monitoring of parameters, for example the quantification of temperature gradients, helps improve cell designs and optimise management systems
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Effectiveness of poly(methyl methacrylate) spray encapsulation for perovskite solar cells J. Phys. Energy (IF 6.9) Pub Date : 2024-02-01 Declan Hughes, Michael Spence, Suzanne K Thomas, Rokas Apanavicius, Chris Griffiths, Matthew J Carnie, Wing C Tsoi
For commercial applications, Perovskite Solar Cells (PSCs) need to be well encapsulated to improve long term stability. The most common method, glass-glass encapsulation, uses edge sealant materials to encapsulate the device between sheets of glass. Glass-Glass encapsulation, while providing provide adequate protection from the ambient environment, limits the use of flexible substrates for thin film
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Optimal MEA structure and operating conditions for fuel cell reactors with hydrogen peroxide and power cogeneration J. Phys. Energy (IF 6.9) Pub Date : 2024-01-22 Jie Yang, Ruimin Ding, Chang Liu, Qinchao Xu, Shanshan Liu, Xi Yin
The cogeneration of hydrogen peroxide (H2O2) and power in proton exchange membrane fuel cell (PEMFC) reactors via two-electron oxygen reduction reaction on the cathode is an economical, low-carbon, and green route for the on-site production of H2O2. However, in practice, the H2O2 that cannot be collected timely will accumulate and self-decompose in the catalyst layer (CL), reducing the H2O2 generation
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Sustainable additive manufacturing of polysulfone membranes for liquid separations J. Phys. Energy (IF 6.9) Pub Date : 2024-01-22 Brian Leonard, Harrison Loh, David Lu, Ebuka A Ogbuoji, Isabel C Escobar, Konstantinos Sierros, Oishi Sanyal
Membranes serve as important components for modern manufacturing and purification processes but are conventionally associated with excessive solvent usage. Here, for the first time, a procedure for fabricating large area polysulfone membranes is demonstrated via the combination of direct ink writing (DIW) with non-solvent induced phase inversion (NIPS). The superior control and precision of this process
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Benchmarking the ragone behaviour and power performance trends of pseudocapacitive batteries J. Phys. Energy (IF 6.9) Pub Date : 2024-01-19 Yee Wei Foong, Kirk H Bevan
The ‘holy grail’ of energy storage is to achieve both high energy and high power densities ( ⩾100 Wh l−1 and ∼104 W l−1, respectively) as characterized in a Ragone plot. However, across the macroscopic dimensions over which energy storage systems operate, power performance is fundamentally limited by both drift and diffusion processes. In this work a macroscopic variation on the Gerischer–Hopfield
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Rotating magnetocaloric effect in polycrystals—harnessing the demagnetizing effect J. Phys. Energy (IF 6.9) Pub Date : 2024-01-19 R Almeida, S C Freitas, C R Fernandes, R Kiefe, J P Araújo, J S Amaral, J O Ventura, J H Belo, D J Silva
Climate change and the increasing demand for energy globally have motivated the search for a more sustainable heat-pumping technology. Magnetic refrigeration stands as one of the most promising alternative technologies for clean and efficient heat pumps of the future. The rotating magnetocaloric effect (RMCE) has previously been studied in materials with magnetocrystalline anisotropy due to its potential
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Light power resource availability for energy harvesting photovoltaics for self-powered IoT J. Phys. Energy (IF 6.9) Pub Date : 2024-01-17 Krishna Seunarine, Zaid Haymoor, Michael Spence, Gregory Burwell, Austin Kay, Paul Meredith, Ardalan Armin, Matt Carnie
As the Internet of Things (IoT) expands, the need for energy-efficient, self-powered devices increases and so a better understanding of the available energy resource is necessary. We examine the light power resource availability for energy harvesting photovoltaics (PV) in various environments and its potential for self-powered IoT applications. We analyse light sources, considering spectral distribution
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Building-Integrated Concentrating Photovoltaics based on a low-toxicity photopolymer J. Phys. Energy (IF 6.9) Pub Date : 2024-01-09 Tomás Lloret, Marta Morales-Vidal, Belén Nieto-Rodríguez, José Carlos García-Vázquez, Augusto Beléndez, Inmaculada Pascual
Low-toxicity solar concentrator systems represent an important challenge for outstanding photovoltaic (PV) applications. Particularly, multiplexed holographic lenses (MHL) as Holographic Solar Concentrators (HSC) provide insight into promising possibilities for Building-Integrated Concentrating PVs. This technology does not affect crucial ecosystems, and can convert buildings from energy consumers
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3D printed electrolyte-supported solid oxide cells based on Ytterbium-doped scandia-stabilized zirconia J. Phys. Energy (IF 6.9) Pub Date : 2024-01-08 Santiago Márquez, Simone Anelli, Marc Nuñez, Maritta Lira, Antonio Maria Asensio, Marc Torrell, Albert Tarancón
Solid oxide cells (SOC) are an efficient and cost-effective energy conversion technology able to operate reversibly in fuel cell and electrolysis mode. Electrolyte-supported SOC have been recently fabricated employing 3D printing to generate unique geometries with never-explored capabilities. However, the use of the state-of-the-art electrolyte based on yttria-stabilized zirconia limits the current
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Benchmark thermodynamic analysis of methylammonium lead iodide decomposition from first principles J. Phys. Energy (IF 6.9) Pub Date : 2023-12-27 Douglas Heine, Hui-Chia Yu, Volker Blum
Hybrid organic–inorganic perovskites (HOIPs) such as methylammonium lead iodide (MAPbI3) are promising candidates for use in photovoltaic cells and other semiconductor applications, but their limited chemical stability poses obstacles to their widespread use. Ab initio modeling of finite-temperature and pressure thermodynamic equilibria of HOIPs with their decomposition products can reveal stability
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Scalable and cost-effective fabrication of high-performance self-powered heterojunction UV-photodetectors using slot-die printing of triple-cation lead perovskite coupled with triboelectric nanogenerators J. Phys. Energy (IF 6.9) Pub Date : 2023-12-07 Sajjad Mahmoodpour, Leyla Shooshtari, Nassim Rafiefard, Raheleh Mohammadpour, Nima Taghavinia, Daryoosh Vashaee
The demand for continuous monitoring of ultraviolet (UV) radiation, which poses significant health risks, has grown significantly with the advent of the internet of things (IoT) for human health. The need for a self-powered system that does not rely on battery charging in environmental conditions has led to the exploration of triboelectric nanogenerators (TENGs) as a promising energy source for sensor
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Techno-economic optimization of renewable urea production for sustainable agriculture and CO2 utilization J. Phys. Energy (IF 6.9) Pub Date : 2023-12-01 Matthew J Palys, Prodromos Daoutidis
Urea is the most used nitrogen fertilizer due to its ease of storage, transportation, and application. It is made by combining ammonia and carbon dioxide (CO2), both of which are produced predominantly from fossil fuels at present. The recent momentum behind ammonia production using renewable-powered electrolysis offers an opportunity to both make urea in a more sustainable way and utilize CO2 from
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A kinetic study on oxygen redox reaction of a double-perovskite reversible oxygen electrode— Part II: Modelling analysis J. Phys. Energy (IF 6.9) Pub Date : 2023-11-30 Fiammetta Rita Bianchi, Antonio Maria Asensio, Davide Clematis, Barbara Bosio, Antonio Barbucci
Mixed ionic and electronic conductor double perovskites are very promising oxygen electrode materials for solid oxide cell technology. However, understanding their specific kinetic mechanism is a fundamental preliminary step towards detecting the best reachable performance, optimising the operation conditions and the electrode architecture. Indeed, the contributions of different rate-determining steps
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A kinetic study on oxygen redox reaction of a double-perovskite reversible oxygen electrode—Part I: Experimental analysis J. Phys. Energy (IF 6.9) Pub Date : 2023-11-30 Antonio Maria Asensio, Fiammetta Rita Bianchi, Davide Clematis, Barbara Bosio, Antonio Barbucci
The carbon-free energy transition requires the spread of advanced technologies based on high-performing materials. In this framework and particularly referring to electrochemical energy converting systems, double perovskites are arousing more and more interest as mixed ionic electronic conductors with flexible manufacturing, appropriate tailoring for many tasks and high chemical stability. Among their
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Tailoring hierarchical porous core–shell SnO2@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage J. Phys. Energy (IF 6.9) Pub Date : 2023-11-30 Huan Yang, Zhijia Zhang, Yuwen Zhao, Yuefang Chen, Qi Sun, Mengmeng Zhang, Yifang Zhang, Zhenyang Yu, Chunsheng Li, Yan Sun, Yong Jiang
Rational design and construction of self-supporting anodes with high energy density is an essential part of research in the field of lithium-ion batteries. Tin oxide (SnO2) is restricted in application as a prospective high energy density anode due to inherent low conductivity and huge volume expansion of the charge/discharge process. A new strategy that combines high energy ball milling and nonsolvent
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Recent developments in 3D-printed membranes for water desalination J. Phys. Energy (IF 6.9) Pub Date : 2023-11-29 Jinlong He, Tianle Yue, Jeffrey R McCutcheon, Ying Li
The recognition of membrane separations as a vital technology platform for enhancing the efficiency of separation processes has been steadily increasing. Concurrently, 3D printing has emerged as an innovative approach to fabricating reverse osmosis membranes for water desalination and treatment purposes. This method provides a high degree of control over membrane chemistry and structural properties
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Miniature-scale elastocaloric cooling by rubber-based foils J. Phys. Energy (IF 6.9) Pub Date : 2023-11-28 Carina Ludwig, Jan Leutner, Oswald Prucker, Jürgen Rühe, Manfred Kohl
We report on the design and characterization of a demonstrator device for miniature-scale elastocaloric (eC) cooling using a series of natural rubber (NR) foil specimens of 9 × 26.5 mm2 lateral size and thicknesses in the range of 290–900 μm. NR has the potential to meet the various challenges associated with eC cooling, as it exhibits a large adiabatic temperature change in the order of 20 K and high
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On (not) deriving the entropy of barocaloric phase transitions from crystallography and neutron spectroscopy J. Phys. Energy (IF 6.9) Pub Date : 2023-11-23 Anthony E Phillips, Helen C Walker
We consider well-known signatures of disorder in crystallographic and inelastic neutron scattering data. We show that these can arise from different types of disorder, corresponding to different values of the system entropy. Correlating the entropy of a material with its atomistic structure and dynamics is in general a difficult problem that requires correlating information between multiple experimental
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Core–shell Cu1−x NCo3−y /a-CuFeCo antiperovskite as high-performance anode for Li-ion batteries J. Phys. Energy (IF 6.9) Pub Date : 2023-11-23 Sk Mujaffar Hossain, Nikhil Kumar, Bharati Debnath, Satishchandra Ogale
Currently, there is an emergent interest in the antiperovskite family of materials in the context of energy applications in view of their distinct and peculiar set of structural and electronic properties. This work examines the surface-modified antiperovskite nitride CuNCo3 as a high-performance anode material for Li-ion storage devices. The antiperovskite CuNCo3 was prepared by the hydrothermal method
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High-temperature reduction thermochemistry of SrVO3−δ J. Phys. Energy (IF 6.9) Pub Date : 2023-11-23 Krishna K Ghose, Yun Liu, Terry J Frankcombe
Cubic SrVO3 perovskite oxide is an attractive candidate for high-temperature energy applications due to its favorable features such as multiple oxidation state cations, high structural and thermal stabilities, ability to accommodate a large number of oxygen vacancies, and cost-effectiveness. Herein, the temperature-dependent reduction properties of SrVO3 have been studied using accurate first-principles
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Non-destructive analysis of Pb-acid battery positive plates, based on neutron tomography J. Phys. Energy (IF 6.9) Pub Date : 2023-11-20 Benedetto Bozzini, Silvia Cazzanti, Raimondo Hippoliti, Zoltán Kis, Ludovica Rovatti, Francesco Tavola
Notwithstanding the in-depth understanding of lead-acid battery degradation processes developed in a time-honored field of science, there is still wide scope for knowledge-based technological advancements, in particular, targeting positive plate (PP) durability. Non-destructive imaging of the internal morphology, structure and chemistry of these components, enabled by neutron-based methods, is capable
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A comprehensive modeling for the CO2 electroreduction to CO J. Phys. Energy (IF 6.9) Pub Date : 2023-11-16 Matteo Agliuzza, Candido Fabrizio Pirri, Adriano Sacco
In the research for the decarbonization processes, electrochemistry is among the most studied routes for the conversion of carbon dioxide in added-value products, thanks to the up-scalability and the mild conditions of work of the technology. In this framework, modeling the electrochemical reactor is a powerful tool to predict and optimize important features of the electroreduction. In this study,
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Bayesian parameter estimation for characterising mobile ion vacancies in perovskite solar cells J. Phys. Energy (IF 6.9) Pub Date : 2023-11-16 Samuel G McCallum, Oliver Nicholls, Kjeld O Jensen, Matthew V Cowley, James E Lerpinière, Alison B Walker
To overcome the challenges associated with poor temporal stability of perovskite solar cells, methods are required that allow for fast iteration of fabrication and characterisation, such that optimal device performance and stability may be actively pursued. Currently, establishing the causes of underperformance is both complex and time-consuming, and optimisation of device fabrication is thus inherently
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3D printing of solid polymer electrolytes by fused filament fabrication: challenges towards in-space manufacturing J. Phys. Energy (IF 6.9) Pub Date : 2023-11-15 Félix Bourseau, Sylvie Grugeon, Ugo Lafont, Loïc Dupont
A new chapter of space exploration is opening with future long-duration space missions toward the Moon and Mars. In this context, the European Space Agency is developing out-of-the-earth manufacturing abilities, to overcome the absence of regular supplies for astronauts’ vital needs (food, health, housing, energy). Additive manufacturing is at the heart of this evolution because it allows the fabrication
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Contact-electrification enabled water-resistant triboelectric nanogenerators as demonstrator educational appliances J. Phys. Energy (IF 6.9) Pub Date : 2023-11-03 Venkateswaran Vivekananthan, Arunkumar Chandrasekhar, Bhaskar Dudem, Gaurav Khandelwal, S Ravi P Silva, Sang-Jae Kim
Triboelectric nanogenerators (TENG) work on the principle of tribo and contact electrification, which is a common phenomenon observed in daily life. TENGs are moving closer to commercialization, particularly for small scale energy harvesting and self-powered sensing. The toys and games industry has attracted a large audience recently with the introduction of digital toys. In this paper we embedded
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Photocatalytic conversion of cellulose into C5 oligosaccharides J. Phys. Energy (IF 6.9) Pub Date : 2023-11-03 Nathan Skillen, Aakash Welgamage, Guan Zhang, Peter K J Robertson, John T S Irvine, Linda A Lawton
Cellulose is made up of linear polymers of glucose monomers that could be a crucial source for valuable chemicals and sustainable liquid fuels. Cellulose is however, very stable and its conversion to a useful fuel or platform chemical products remains a significant challenge (Kimura et al 2015 Sci. Rep. 5 16266; Xia et al 2016 Nat. Commun. 7 11162). Photocatalysis is a versatile technology which has
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Roll-to-roll double side electrode processing for the development of pre-lithiated 80 F lithium-ion capacitor prototypes J. Phys. Energy (IF 6.9) Pub Date : 2023-11-02 María Arnaiz, María Canal-Rodríguez, Silvia Martin-Fuentes, Daniel Carriazo, Aitor Villaverde, Jon Ajuria
Lithium-ion capacitors (LICs) show promise to help lithium-ion batteries (LIBs) and electrical double layer capacitors (EDLCs) in giving response to those applications that require an energy storage solution. However, pre-lithiation is a major challenge that needs to be tackled in order to develop efficient and long-lasting LIBs and LICs. In this work, we report for the first time the scale-up and
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2023 Roadmap on molecular modelling of electrochemical energy materials J. Phys. Energy (IF 6.9) Pub Date : 2023-10-30 Chao Zhang, Jun Cheng, Yiming Chen, Maria K Y Chan, Qiong Cai, Rodrigo P Carvalho, Cleber F N Marchiori, Daniel Brandell, C Moyses Araujo, Ming Chen, Xiangyu Ji, Guang Feng, Kateryna Goloviznina, Alessandra Serva, Mathieu Salanne, Toshihiko Mandai, Tomooki Hosaka, Mirna Alhanash, Patrik Johansson, Yun-Ze Qiu, Hai Xiao, Michael Eikerling, Ryosuke Jinnouchi, Marko M Melander, Georg Kastlunger, Assil
New materials for electrochemical energy storage and conversion are the key to the electrification and sustainable development of our modern societies. Molecular modelling based on the principles of quantum mechanics and statistical mechanics as well as empowered by machine learning techniques can help us to understand, control and design electrochemical energy materials at atomistic precision. Therefore
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Modulation of electrocatalytic activity by tuning anion electronegativity: case study with copper chalcogenides J. Phys. Energy (IF 6.9) Pub Date : 2023-10-30 Harish Singh, David Prendergast, Manashi Nath
Anion-tuning in metallic chalcogenides has been shown to have a significant impact on their electrocatalytic ability for overall water splitting. In this article, copper-based chalcogenides (Cu2 X, X= O, S, Se, and Te) have been systematically studied to examine the effect of decreasing anion electronegativity and increasing covalency on the electrocatalytic performance. Among the copper chalcogenides
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Barocaloric response of plastic crystal 2-methyl-2-nitro-1-propanol across and far from the solid-solid phase transition J. Phys. Energy (IF 6.9) Pub Date : 2023-10-25 Alejandro Salvatori, María Barrio, Philippe Negrier, Stéphane Massip, Michela Romanini, Araceli Aznar, Pol Lloveras, Josep-Lluís Tamarit
Plastic crystals have emerged as benchmark barocaloric (BC) materials for potential solid-state cooling and heating applications due to huge isothermal entropy changes and adiabatic temperature changes driven by pressure. In this work we investigate the BC response of the neopentane derivative 2-methyl-2-nitro-1-propanol (NO2C(CH3)2CH2OH) in a wide temperature range using x-ray diffraction, dilatometry
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Thin film absorbers for tandem solar cells: an industrial perspective J. Phys. Energy (IF 6.9) Pub Date : 2023-10-16 Ming L Yu, Andrei Los, Gang Xiong
Tandem solar cells have received a lot attention from academia and industrial researchers as the potential next-generation PV technology, with higher efficiency above the limit of single-junction solar cells. Thin-film/thin-film (TF/TF) tandems are attractive due to similar toolset and processes producing the top and bottom cells, which improve scalability and promote cost reduction compared to TF/wafer
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A unified approach to thermo-mechano-caloric-characterization of elastocaloric materials J. Phys. Energy (IF 6.9) Pub Date : 2023-10-13 Franziska Louia, Nicolas Michaelis, Andreas Schütze, Stefan Seelecke, Paul Motzki
This paper presents a novel approach to characterizing the relevant mechanical, thermal and caloric properties of elastocalorics material in a single testing device. Usually, tensile experiments are performed to determine the rate- and process-depending stress/strain behavior of nickel-titanium-based shape memory alloys and potentially other elastocaloric materials made from metallic alloys. These
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The emergence of quantum energy science J. Phys. Energy (IF 6.9) Pub Date : 2023-10-13 Florian Metzler, Jorge I Sandoval, Nicola Galvanetto
Quantum engineering seeks to create novel technologies based on the exploitation of distinctly nonclassical behaviors such as quantum coherence. The vast majority of currently pursued applications fall into the domain of quantum information science, with quantum computing as the most visible subdomain. However, other applications of quantum engineering are fast emerging. Here, we review the deployment
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Physics based modeling of LiFePO4 cathodes: effects of electrode parameters on cell performance during fast charging J. Phys. Energy (IF 6.9) Pub Date : 2023-10-06 Aakanksha1, Asit Sahoo, Ashwini Kumar Sharma, Yogesh Sharma
Lithium-iron phosphate (LFP) has emerged as a potential cathode material due to its lower cost and higher stabilities. This work investigates LFP cell behavior at higher C-rates via a detailed simulation study. To facilitate this investigation, a physics-based electrochemical model is calibrated and validated with in-house experimental data. The validated model is used to study the effect of particle
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n-type CdTe:In for photovoltaics: in situ doping, type verification and compensation effects J. Phys. Energy (IF 6.9) Pub Date : 2023-09-29 Theodore D C Hobson, Luke Thomas, Laurie J Phillips, Leanne A H Jones, Matthew J Smiles, Christopher H Don, Pardeep K Thakur, Huw Shiel, Stephen Campbell, Vincent Barrioz, Vin Dhanak, Tim Veal, Jonathan D Major, Ken Durose
We explored the in-situ doping of cadmium telluride thin films with indium to produce n-type absorbers as an alternative to the near-universal choice of p-type for photovoltaic devices. The films were grown by close space sublimation from melt-synthesised feedstock. Transfer of the indium during film growth was limited to 0.0014%–0.014%—unless reducing conditions were used which yielded 14%–28% efficient
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Interaction phenomena of electrically coupled cells under local reactant starvation in automotive PEMFC stacks J. Phys. Energy (IF 6.9) Pub Date : 2023-09-28 Jens Nissen, Max Schrievers, Johannes Frieder Huber, Jan Nicolas Schwämmlein, Florian Henkel, Walter Theodor Czarnetzki, Markus Hölzle
The local current density distribution of polymer electrolyte membrane fuel cells (PEMFCs) can be distorted by various error states. Differences in current density distributions (CDDs) of adjacent cells in a stack are equilibrized by in-plane currents within the sandwiched bipolar plates. Degradation stressors such as detrimental differences in local cell voltage and current density maxima can thus
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Multiprocess 3D printing of sodium-ion batteries via vat photopolymerization and direct ink writing J. Phys. Energy (IF 6.9) Pub Date : 2023-09-27 Ana C Martinez, Eva M Schiaffino, Ana P Aranzola, Christian A Fernandez, Myeong-Lok Seol, Cameroun G Sherrard, Jennifer Jones, William H Huddleston, Donald A Dornbusch, Sreeprasad T Sreenivasan, Pedro Cortes, Eric MacDonald, Alexis Maurel
In this work, the ability to print shape-conformable batteries with multi-process additive manufacturing is reported. Vat photopolymerization (VPP) 3D printing process is employed to manufacture gel polymer electrolytes (GPEs) for sodium-ion batteries (SIBs), while direct ink writing process is used to prepare positive electrodes. The sodium-ion chemistry has proven to be an adequate substitute to
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Entropy change reversibility in MnNi1−x Co x Ge0.97Al0.03 near the triple point J. Phys. Energy (IF 6.9) Pub Date : 2023-09-25 Tapas Samanta, Chris Taake, Laila Bondzio, Luana Caron
The nature of the phase transition has been studied in MnNi1−x Co x Ge0.97Al0.03 (x= 0.20–0.50) through magnetization, differential scanning calorimetry and x-ray diffraction measurements; and the associated reversibility in the magnetocaloric effect has been examined. A small amount of Al substitution for Ge can lower the structural phase transition temperature, resulting in a coupled first-order
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Advanced manufacturing applied to nuclear fusion—challenges and solutions J. Phys. Energy (IF 6.9) Pub Date : 2023-09-22 Steve Jones
Materials needed to achieve designed performance will require formulations and processing methods capable of delivering a compendium of metallic, ceramic and cermet chemistries, which must be finely tuned at source, and tolerant to down-stream thermomechanical adjustment. Structural steels and cermets are continuously being developed by researchers using computational thermodynamics modelling and modified
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High resolution spatial mapping of the electrocaloric effect in a multilayer ceramic capacitor using scanning thermal microscopy J. Phys. Energy (IF 6.9) Pub Date : 2023-09-19 Olivia E Baxter, Amit Kumar, J Marty Gregg, Raymond G P McQuaid
Scanning thermal microscopy (SThM) is emerging as a powerful atomic force microscope based platform for mapping dynamic temperature distributions on the nanoscale. To date, however, spatial imaging of temperature changes in electrocaloric (EC) materials using this technique has been very limited. We build on the prior works of Kar-Narayan et al (2013 Appl. Phys. Lett. 102 032903) and Shan et al (2020
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Effect of Zn(TFSI)2 on the performance-aging time of perovskite solar cells J. Phys. Energy (IF 6.9) Pub Date : 2023-09-15 Hyung-Joon Kim, Young-In Jeon, Wan In Lee, Hui-Seon Kim
Hole transport layers (HTLs) are one of the essential layers of perovskite solar cells (PSCs). Generally, 2,2ʹ,7,7ʹ-Tetrakis [N,N-di(4-methoxyphenyl)amino]-9,9ʹ-spirobifluorene (spiro-MeOTAD) doped by lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) is used as the HTL in PSCs. PSCs employing spiro-MeOTAD require an additional aging process to reach an optimized point of photovoltaic performance
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Design of n-i-p and p-i-n Sb2Se3 solar cells: role of band alignment J. Phys. Energy (IF 6.9) Pub Date : 2023-09-14 Marwa S Salem, Mohamed Okil, Ahmed Shaker, Abdullah Albaker, Mansoor Alturki
Investigations into novel device architectures and interfaces that enhance charge transport and collection are necessary to increase the power conversion efficiency (PCE) of antimony selenide (Sb2Se3) solar cells, which have shown great promise as a low-cost and high-efficiency alternative to conventional silicon-based solar cells. The current work uses device simulations to design p-i-n and n-i-p
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Influence of neutron and gamma irradiation on the electrocaloric properties of Mn-doped 0.9Pb(Mg1/3Nb2/3)O3–0.1PbTiO3 ceramics J. Phys. Energy (IF 6.9) Pub Date : 2023-09-13 Ankita Sarkar, Matej Šadl, Anže Jazbec, Luka Snoj, Silvo Drnovšek, Tadej Rojac, Geoff L Brennecka, Hana Uršič, Barbara Malič
The influence of neutron and gamma irradiation on the low- and high-field dielectric and electrocaloric (EC) properties of Mn-doped 0.9Pb(Mg1/3Nb2/3)O3–0.1PbTiO3 (PMN–10PT) ceramic is studied. Upon exposure to neutron fluences of up to 1017 cm−2 and gamma-ray doses of up to 1200 kGy the Mn-doped PMN–10PT exhibits a lower saturated polarization, increased internal bias field and reduced EC temperature
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High performance composite Pr4Ni3O 10±δ —Ce0.75Gd0.1Pr0.15O 2−δ solid oxide cell air electrode J. Phys. Energy (IF 6.9) Pub Date : 2023-08-25 Zheng Xie, Inyoung Jang, Mengzheng Ouyang, Anna Hankin, Stephen J Skinner
A composite electrode composed of Pr4Ni3O 10±δ —Ce0.75Gd0.1Pr0.15O 2−δ (50 wt.%–50 wt.%) was thoroughly investigated in terms of the electrochemical performance as a function of microstructure. The electrochemical performance was characterized by electrochemical impedance spectroscopy and the microstructures, characterized by focused ion beam-scanning electron microscopy and 3D reconstructions, were
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Caloric effects in liquid crystal-based soft materials J. Phys. Energy (IF 6.9) Pub Date : 2023-08-25 Dejvid Črešnar, Nikita Derets, Maja Trček, Gregor Skačej, Andraž Rešetič, Marta Lavrič, Valentina Domenici, Boštjan Zalar, Samo Kralj, Zdravko Kutnjak, Brigita Rožič
With the increased environmental awareness, the search for environmentally friendlier heat-management techniques has been the topic of many scientific studies. The caloric materials with large caloric effects, such as the electrocaloric (EC) and elastocaloric (eC) effects, have increased interest due to their potential to realize new solid-state refrigeration devices. Recently, caloric properties of
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Electromagnetic shielding properties of LPBF produced Fe2.9wt.%Si alloy J. Phys. Energy (IF 6.9) Pub Date : 2023-08-10 Michele Quercio, Francesco Galbusera, Aldo Canova, Ali Gökhan Demir, Giambattista Gruosso, Barbara Previtali
Ferromagnetic materials are used in various applications such as rotating electrical machines, wind turbines, electromagnetic shielding, transformers, and electromagnets. Compared to hard magnetic materials, their hysteresis cycles are featured by low values of coercive magnetic field and high permeability. The application of additive manufacturing to ferromagnetic materials is gaining more and more
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On the efficiency of caloric materials in direct comparison with exergetic grades of compressors J. Phys. Energy (IF 6.9) Pub Date : 2023-08-03 Jan Schipper, David Bach, Stefan Mönch, Christian Molin, Sylvia Gebhardt, Jürgen Wöllenstein, Olaf Schäfer-Welsen, Christian Vogel, Robin Langebach, Kilian Bartholomé
Efficiency improvements in heat pump can drastically reduce global energy demand. Caloric heat pumps are currently being investigated as a potentially more efficient alternative to vapor compression systems. Caloric heat pumps are driven by solid-state materials that exhibit a significant change in temperature when a field is applied, such as a magnetic or an electric field as well as mechanical stress
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Spatio-temporal solid-state electrocaloric effect exceeding twice the adiabatic temperature change J. Phys. Energy (IF 6.9) Pub Date : 2023-08-03 Stefan Mönch, Kilian Bartholomé
In an all-solid-state electrocaloric arrangement, an absolute temperature change which exceeds twice the electrocaloric adiabatic temperature change is locally realized, using just the distributed thermal capacitances and resistances and spatio-temporal distributed electric field control. First, simulations demonstrate surface temperature changes up to four times (400%) the electrocaloric adiabatic
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Magnetocaloric properties in (La,R)(Fe,Mn,Si)13H (R = Ce and Pr)—toward a better alloy design that results in a reduction in volume of permanent magnets and the establishment of long-term reliability in cooling systems J. Phys. Energy (IF 6.9) Pub Date : 2023-08-02 Asaya Fujita, Kaoru Imaizumi
The magnetocaloric effect (MCE) in La1−z R z (Fe0.89−x Mn x Si0.11)13H y max (R = Ce and Pr) is verified in view of correlation between alloying recipes such as selection of doping elements and fundamental physics that governs MCE. The Ce-doped specimen with z = 0.3 & x = 0.017 exhibits a peaky isothermal entropy change ΔS M profile with a maximum value of 20 J kg−1 K under a field change of 0.8 T
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Controlled assembly of perovskite nanoparticles by photoswitchable functional ligands J. Phys. Energy (IF 6.9) Pub Date : 2023-08-02 Tal Binyamin, Orit Cohen, Idan Cohen, Lioz Etgar
Organic ligands play a crucial role in the properties and functionality of nanostructures. Functional ligands are an interesting research direction that can be utilized to influence the properties and functionality of nanoparticles (NPs). In this work, we demonstrate controlled assembly of CsPbBr3 perovskite NPs as a result of light. Azobenzene derivative molecules were used as the photoswitchable
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LFP-based binder-free electrodes produced via fused filament fabrication J. Phys. Energy (IF 6.9) Pub Date : 2023-07-27 José Miguel Ramos-Fajardo, Isabel María Peláez-Tirado, Juan Ramón Marín-Rueda, Miguel Castro-García, Jesús Canales-Vázquez, Juan Carlos Pérez-Flores
Carbon coated-LiFePO4 (LFP) is a strong candidate as lithium-ion battery (LiB) cathode due to the combination of safe operation, stable electrochemical performance and positive environmental impact as does not depend on Co, which is toxic and a critical raw material. In this work, we report the development of binder-free LFP cathodes fabricated by fused filament fabrication (FFF) technology. Several