Results 101 to 110 of about 17,555 (253)

Nanocluster‐Assisted OH Ligand Modification Optimizes Activity and Stability of Fe‐N‐C Catalysts

Advanced Science, EarlyView.
A nanocluster‐assisted ligand engineering stabilizes OH‐modified FeN4 active sites through strong electronic coupling between isolated Fe atoms and adjacent nanoclusters. This synergy optimizes oxygen‐intermediate adsorption, lowers ORR energy barriers, and breaks the conventional activity–stability trade‐off, enabling high ORR activity, exceptional ...
Xue Zhao, Junpeng Chen, Shice Wang, Zhao Yu, Jing Wang, Qiuming Peng, Ge Li   +6 more
wiley   +1 more source

Pd-1%Ni Composite Electrodes for Electrooxidation of Phenol in Acid Solution

International Journal of Electrochemical Science, 2009
Binary Pd and 1% Ni composite has been prepared by borohydride reduction method and produced in the thin film forms on Ti by an ink painting method. The catalyst electrode was investigated as electrocatalyst for the oxidation of phenol in acid medium at ...
R.N. Singh, D. Mishra, Anindita
doaj   +1 more source

Interfacial Tandem Catalysis Over a CuSn(OH)6/Co Heterostructure Enables Efficient Electroreduction of Nitrate to Ammonia

Advanced Science, EarlyView.
Interfacial tandem catalysis is developed for efficient electrochemical reduction of NO3− to NH3 over a CuSn(OH)6/Co heterostructure. CuSn(OH)6 accelerates the rate‐determining NO3−‐to‐*NO2 conversion, whereas Co promotes H2O dissociation to enhance *H supply for the rapid hydrogenation of *NO2 intermediate to NH3.
Yuan‐Yuan Hei, Qing Chen, Jie Gu, Yifan Leng, Yaping Huang, Sunhui Chen, Hong Sun, Hongfang Du   +7 more
wiley   +1 more source

Numerical simulation of potential step chronoamperometry at low concentrations of supporting electrolyte

, 2016
Electrochemical systems are considered for which the concentration of ions in solution is low, and therefore there is an electric field which extends deep into solution away from the electrode surface.

core   +1 more source

Potential‐Controlled Ammonium‐Assisted Reversible Electrodeposition of Polyoxometalates for Hybrid Redox Flow Batteries

Advanced Science, EarlyView.
Potential‐controlled NH4+‐assisted reversible electrodeposition of molecular metal oxide clusters enables dynamic solution‐to‐solid electron storage. Leveraging this deposition/dissolution reaction chemistry, polyoxometalate‐based hybrid flow batteries are demonstrated as a new platform for deposition‐based electrochemical energy storage.
Ke Wang, Nikhil Arya, Sadia Shahid, Montaha Anjass   +3 more
wiley   +1 more source

Electrochemical and Phase Analysis of Si(IV) on Fe Electrode in Molten NaCl-NaF-KCl-SiO2 System

High Temperature Materials and Processes, 2018
The electrochemical behaviour of Si(IV) ions on Fe electrode in the NaCl-NaF-KCl-SiO2 molten salt system (0.177 mol·L−1 SiO2) at 1,103 K was studied by using cyclic voltammetry, square wave voltammetry, chronoamperometry, and chronopotentiometry ...
Li Hui, Liang Jinglong, Xie Shanshan, Reddy Ramana G., Wang Lanqing   +4 more
doaj   +1 more source

Mixed‐Valence Atomic‐Layer Iridium Patches Enhance Alkaline Hydrogen Evolution

Advanced Science, EarlyView.
Engineering iridium architectures on Cu3P nanowires reveals that atomic‐layer Ir patches form a mixed‐valence interfacial motif with an anisotropic electronic structure. This configuration balances water dissociation and hydrogen adsorption/desorption, delivering superior alkaline hydrogen evolution with a 27 mV overpotential and 1 A cm−2 operation in ...
Payam Ahmadian Koudakan, Xiaobin Hao, Rui Guo, Omid Mazaheri, Matthias Pichler, Qinjian Luo, Bufeng Zhang, Shuaijun Pan   +7 more
wiley   +1 more source

Synergistic Effects in Multistate Black Electro‐Thermochromic Smart Windows for Energy‐Efficient Modulation of Solar Heating

Advanced Science, EarlyView.
Hybrid electro‐thermochromic smart windows are developed for dynamic climate control by integrating a redox‐matched black electrochromic gel with a paraffin‐based thermochromic film. This synergistic combination enables multimodal solar modulation, where photothermal heating from the electrochromic layer triggers thermochromic activation at lower ...
Xilu Wu, Lorenzo Vallan, Hao Li, Jaume Ramon Otaegui, Silvia Mena, Weizhong Jiang, Hongzhi Wang, Jonathan C. Barnes, Daniel Ruiz‐Molina, Kerui Li, Jordi Hernando, Claudio Roscini, Gonzalo Guirado   +12 more
wiley   +1 more source

Correcting for Electrocatalyst Desorption and Inactivation in Chronoamperometry Experiments

, 2009
Chronoamperometric experiments with adsorbed electrocatalysts are commonly performed either for analytical purposes or for studying the catalytic mechanism of a redox enzyme.
Liebgott, Pierre Pol, Arnoux, Pascal, Leroux, Fanny, Soucaille, Philippe, Rousset, Marc, Pignol, David, Meynial Salles, Isabelle, Bertrand, Patrick, Liebgott, Pierre-Pol, Lautier, Thomas, Baffert, Carole, Dementin, Sébastien, Léger, Christophe, Soucaille, Phillippe, Fourmond, Vincent, Patrick Bertrand (2080990), Carole Baffert (1982572), Marc Rousset (512794), Fanny Leroux (1718548), Phillippe Soucaille (2380234), David Pignol (69174), Christophe Léger (1610692), Thomas Lautier (32321), Vincent Fourmond (1610695), Sébastien Dementin (1982566), Isabelle Meynial-Salles (1982569), Pascal Arnoux (69169), Pierre-Pol Liebgott (2080993)   +27 more
core   +2 more sources

Synergistic Integration of Fe–N4 Single‐Atom Sites and Directionally Aligned Electrode Architecture for High‐Performance Lithium–Sulfur Batteries

Advanced Science, EarlyView.
A directionally ice‐templated sulfur cathode integrated with atomically dispersed Fe–N4 catalytic sites is developed for high‐performance lithium–sulfur batteries. The structure–catalysis synergy accelerates Li+ transport and polysulfide conversion, leading to high sulfur utilization and stable long‐term cycling performance.
Lin Shen, Yijia Zou, Yuming Wang, Erya Gao, Christopher S. Allen, Tianyi Zhang, Stephen J. Skinner, Nigel P. Brandon, Chun Huang   +8 more
wiley   +1 more source