Results 91 to 100 of about 36,695 (252)

Efficient Hydroxyl Diffusion Triggers Surface Hydronium Enrichment and Bulk Proton Participation to Boost Alkaline Hydrogen‐Evolving Reaction

Advanced Materials, EarlyView.
For the first time, we shed light on the surface‐to‐bulk diffusion, induction, and reaction behaviors of OH−, H+, and H2O species on model oxides for alkaline hydrogen‐evolving reaction (HER). We first demonstrate that bulk OH− diffusion significantly affects the generation of proton sources and the diffusion/reaction behaviors of protons, thus ...
Daqin Guan, Hengyue Xu, Xiao Sun, Leqi Zhao, Chun‐Kuo Peng, Chao Jing, Yu‐Cheng Huang, Jiayi Tang, Nai Shi, Zezhou Lin, Xiaomin Xu, Zhiwei Hu, Zongping Shao   +12 more
wiley   +1 more source

Revealing the Underlying Mechanisms in Performance Enhancement of Shellular Lattice Electrodes During Anion Exchange Membrane Water Electrolysis Process. [PDF]

Adv Sci (Weinh)
Micro laser powder bed fusion enables architected nickel shellular lattice gas diffusion layers for anion exchange membrane water electrolysis. Among regular open cell geometries, the Gyroid lattice promotes bubble release, convective reactant replenishment and continuous electron transport, delivering low overpotentials, enhanced charge transfer and ...
Niu T, Li R, Chen X, Sun D, Gao T, Ding J, Qu S, Song X.   +7 more
europepmc   +2 more sources

The effect of lithium battery overpotential on sulfurized-polyacrylonitrile (SPAN): A theoretical approach

The use of SPAN as a positive electrode for lithium‑sulfur batteries (LiSB) has demonstrated that, the material preserves a high specific capacity for several cycles. Through the recharging cycle, e.g.
Bertolini, Samuel, Delcorte, Arnaud, Venezuela, Pedro   +2 more
core   +1 more source

Interfacial Failure and Self‐Healing in Solid‐State Batteries

Advanced Materials, EarlyView.
Dynamic interfacial self‐healing offers an adaptive route to mitigate coupled mechanical, chemical, and electrochemical degradation in solid‐state batteries. This review connects evolving interfacial failure mechanisms with physical‐flow, chemical‐restoration, stimuli‐responsive, and electric‐field‐assisted repair strategies, highlighting targeted self‐
Xinxin Zhu, Tengfei Dai, Wendi Dou, Zhiheng Li, Kaihua Wen, Yanqun Lv, Ming Zhao, Jun Lu, Zaiping Guo   +8 more
wiley   +1 more source

A Biomimetic Copper Water Oxidation Catalyst with Low Overpotential

, 2016
Simply mixing a Cu­(II) salt and 6,6′-dihydroxy-2,2′-bipyridine (H2L) in a basic aqueous solution afforded a highly active water oxidation catalyst (WOC). Cyclic voltammetry of the solution at pH = 12–14 shows irreversible catalytic current with an onset
Jin-Liang Wang (1579021), Shubin Liu (1262169), Wenbin Lin (1264161), Cheng Wang (102692), Teng Zhang (457128)   +4 more
core   +2 more sources

Binary Cobalt and Magnesium Hydroxide Catalyst for Oxygen Evolution Reaction in Alkaline Water Electrolysis

International Journal of Electrochemical Science, 2016
Alkaline water electrolysis has been proposed as an environmentally inoffensive way to supply the anticipated demand for hydrogen gas (H2) for the prospective hydrogen energy economy.
Imgon Hwang, Injoon Jang, Gibaek Lee, Yongsug Tak   +3 more
doaj   +1 more source

Ni Foam-Supported Fe-Doped β‑Ni(OH)2 Nanosheets Show Ultralow Overpotential for Oxygen Evolution Reaction [PDF]

, 2019
Oxygen evolution reaction (OER) involves multiple electron-transfer processes, resulting in a high activation barrier. Developing catalysts with low overpotential and high intrinsic activity toward OER is critical but challenging.
Kou, Tianyi, Guo, Jinghua, Ye, Yifan, Hauser, Jesse L, Chen, Mingpeng, Li, Yat, Oliver, Scott RJ, Wang, Shanwen   +7 more
core   +1 more source

Electrolyte Engineering Challenges and Opportunities for Next‐Generation Aqueous Ammonium‐Ion Batteries

Advanced Materials, EarlyView.
Aqueous ammonium‐ion batteries (AAIBs) face a hydrogen‐bond paradox: the HB network enables fast NH4+ transport but triggers water decomposition. This review dissects this dilemma, evaluates multiple electrolyte engineering strategies, and outlines four future directions for next‐generation AAIB design ABSTRACT Aqueous ammonium‐ion batteries (AAIBs ...
Zi‐Hang Huang, Xiaoyu Liu, Shuai Mao, Lingfeng Zhu, Zhijun Wu, Hongge Pan, Tianyi Ma   +6 more
wiley   +1 more source

The Effect of Periodically Changing Regimes on the Electrodeposition of Silver Powder

International Journal of Electrochemical Science, 2011
The effect of different deposition regimes (constant and reversing currents, constant and pulsating overpotential), on the powdered and dendritic silver electrodeposits morphology were investigated.
Lj.J. Pavlović, M.G. Pavlović, M.M. Pavlović, N.D. Nikolić, M.V. Tomić   +4 more
doaj   +1 more source

Spatial‐Compatibility‐Assisted Molecular Intercalation in MXenes

Advanced Materials, EarlyView.
This work demonstrates a solvent–free NH4F–mediated route for simultaneous Al removal and molecular intercalation in MXenes. Intercalants are selected by comparing their crystallographic X, Y, and Z dimensions with the MXene interlayer spacing, establishing a spatial‐compatibility criterion that rationalizes guest–host matching and enables predictive ...
Minhao Sheng, Xiaoqing Bin, Xiangyang Liu, Yingji Zhao, Wenxiu Que, Yusuke Asakura, Yusuke Yamauchi   +6 more
wiley   +1 more source