In the context of molecular catalysis of electrochemical reactions, the competition between reduction of the substrate and deactivation of the catalyst by a cosubstrate is investigated. It is a frequent situation because proton donors are ubiquitous cosubstrate in reductive electrochemical reactions and molecular catalysts, either transition metal complexes or organic aromatic molecules, are often

The development of new procedures for synthesizing new, low-cost, and stable metal oxides for oxygen-evolution reaction (OER) by water oxidation is critical. Especially, since 2000 there has been a rapid rise in the use of first-row transition metal (hydr)oxide for OER. However, there is still a need to design and synthesize an efficient and stable catalyst for OER. The present paper aims to design

The researchers across the globe are working on improvement in energy density of supercapacitor without compromising its inherent supercapacitive properties. The upgraded hybrid supercapacitor derived from a battery type-anode, a capacitive type cathode and organic electrolyte. However, the performance of hybrid supercapacitor is limited by the imbalance kinetics between the anode and cathode due to

The electrocatalytic CO 2 reduction reaction (CO 2 RR) to generate syngas (a mixture of CO and H 2 ) is considered to be one of the effective routes to peak carbon and carbon neutrality. However, a challenge is to regulate the CO/H 2 ratio by adjusting the activity of CO 2 RR. To deal with this problem, transition metals were designed to be encapsulated in carbon shells and loaded onto N-doped carbon

Redox flow batteries (RFBs), which are based on the redox reaction of vanadium ions, are expected to be a promising energy buffer for renewable energy because of their large-scale potential. However, the reaction overvoltage associated with the redox of vanadium ions is large, and highly active electrocatalysts are urgently needed. In this study, we prepared thin-film model electrodes to evaluate the

The rapid development of wearable electronics requests higher to the energy storage devices’ flexibility. Nevertheless, the fabrication of high-performance electrodes for achieving goal of super-flexibility remains challenging. In this work, novel super-flexible PAN/PVP carbon nanofiber networks (PAN/PVP CNFs, PCF) are prepared by electrospinning followed with in-situ carbonisation, whose micro-mesoporous

The development of high-performance polymer acceptor is the key challenge for All-polymer solar cells (All-PSCs), especially related morphology control in the blend film. Herein, we introduce the thiophene with oligoethylene oxide side chain (TOE) as third unit into D-A copolymer PYT by simple random polymerization for the first time. Rigid-fused unit Y5 with large planar or quasi-plane surfaces are

Porous functional biochar (MSCs) rich in N and S heteroatom doping was prepared by pyrolyzing mantis shrimp shell as the biomass source of the typical processing seafood waste in CO 2 atmosphere. The physical and chemical properties of carbon materials were adjusted by the control of the pyrolysis temperature. In this study, maximum specific surface area (SSA) and pore volume of 484.5 m 2 g -1 and

In this work, utilized lotus root knot as raw material, nitrogen and oxygen co-doped hierarchical porous carbon with appropriate heteroatom doping, multi-connected 3D pore structure and suitable pore size distribution were produced by carbonization and chemical activation steps, where the maximum specific surface area of biochar material reached 3659 m 2 g -1 . These physical properties not only exhibit

Magnesium based secondary batteries are regarded as a viable alternative to the immensely popular Li-ion systems. One of the largest challenges is the selection of a Mg anode material, since the insertion/extraction processes are kinetically slow because of the large ionic radius and high charge density of Mg2+. We studied the insertion and diffusion of Mg in a thin, massive layer of Sb deposited on

Sodium ion batteries (SIBs) have been considered as one of the most promising energy storage devices owing to lower cost and higher energy/power density. However, limited cycling life and poor rate capability of selectable materials restrict their worldwide application. To regulate the material’s structure at the nanoscale, reducing volume expansion and increasing the intrinsic conductivity are two

The applicability of emission readout of ion-selective electrodes, containing fluorimetrically active polyoctylthiophene in the membrane, operating under chronopotentiometric mode was studied. The electrochemical and optical signals were collected in the same experiment and compared. In both modes a change in recorded signal: potential or emission in time was observed while a constant current was applied

Lithium electrodeposition is important for lithium metal batteries and is a safety and reliability concern for the current lithium-ion technology. In the literature, many models for the growth of dendrites can be found and a strong dependence on deposition rate is expected. To elucidate the process of the lithium deposition, operando light microscopy at the physical resolution limit of light was performed

The electrocatalytic CO2 reduction holds great potential to battle the energy and environmental crisis through converting the redundant CO2 into carbon-neutral fuels. The Ag-based materials stand out from the catalysts because its high Faradaic efficiencies for CO formation. In this work, thin Ag polycrystalline film was synthesized on carbon papers by a simple vacuum evaporation method. After 15 min-O3

A strategy for electrochemically synthesizing selenium benzoxazines through o-vinylaniline and diselenide has been developed. This metal-free and oxidant-free electrochemical synthesis method is carried out in an undivided cell under mild conditions, which is more environmentally friendly. Moreover, a variety of selenium-substituted benzoxazine can be prepared in good yield with a broad scope and functional

The electrochemical oxidation of 6-ferrocenylheptanoate was used to modify the surface of glassy carbon electrodes with thin films bearing ferrocene molecules. These films growth layer by layer and behave as surface redox catalyst during the electrografting. The electrografted films have a structure with pinholes or channels, whose existence was deduced from the redox behavior of the film in acetonitrile

Chloride-ion batteries have some attractive properties such as high energy density and low cost. However, it has poor cycle performance because the metal chloride as an active material tends to dissolve into a polar solvent. Herein, an all-solid-state chloride-ion battery is demonstrated with KCl-doped PbCl 2 as a solid electrolyte to suppress the dissolution of metal chloride. The all-solid-state