Activating Nickel-tungsten alloy for efficient alkaline hydrogen evolution via interface engineering DOI Open Access
Xiao Dong Chen,

Fu Wanyan,

Zhaojie Wang

et al.

Journal of Physics Conference Series, Journal Year: 2025, Volume and Issue: 2962(1), P. 012005 - 012005

Published: Feb. 1, 2025

Abstract The design of unprecious metal catalysts that exhibit both high-performance and durstability presents a significant challenge for hydrogen evolution reaction (HER). Non-precious metal-based 5NiWAg 10 -NiW@CF catalyst with efficient HER catalytic activity was developed synthesized based on interfacial engineering modulation. experimental results show the heterogeneous interface not only promotes exposure active site, but also accelerates transfer electrons. high electrocatalytic activity, achieving an overpotential 118 mV at current density 0.01 A cm −2 . Particularly, favorable kinetics towards in alkaline atmosphere evidenced by its Tafel slope as low 103 dec −1 This work offers new perspective optimization catalysts.

Language: Английский

Crystalline‐Amorphous Interface‐Triggered Electron Redistribution on Copper(II) Sulfide@Metal (Ni, Co, and Fe) Oxyhydroxides for Ultra‐Efficient Overall Water/Seawater Splitting DOI

Peng Gu,

Yidong Song,

Yihe Fan

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Abstract Rearranging the electronic orbitals of metal sites through interface engineering is breakthrough for achieving high efficiencies in hydrogen/oxygen evolution reactions (HER/OER) on bimetallic catalysts. Here, via a multistep liquid‐phase synthesis strategy, crystalline‐amorphous (c‐a) built by coating amorphous oxyhydroxide layer surface crystallized copper(II) sulfide (CuS@MOOH, M = iron (Fe), cobalt (Co) and nickel (Ni)) with an internal cavity. For HER, c‐a facilitates electron filling 3d Cu, thereby enhancing coordination between Cu (Cu 2+ /Cu + ) *H reducing energy barrier adsorption. OER, triggers rearrangement sites, prompting transition from t2g to eg achieve half‐filled state, optimizing oxygen‐intermediates adsorption (M 3+ /M 4+ ). Among CuS@MOOH, as‐marked CuS@CoOOH‐6 exhibits best activities ultra‐low overpotentials 62 mV (HER) 136 (OER). Only 1.52 V sufficient power electrolyzer CuS@CoOOH‐6‐based cathode/anode, maintaining ultra‐stable efficiency (96.9 %) over 72 h. Notably, also impressive activity/durability natural seawater electrolysis. This study enhances understanding properties structure water splitting.

Language: Английский

Citations

4
Achieving advanced hydrogen evolution under large current density using an amorphous/crystalline core–shell electrocatalyst of a-NiCoP/Co2P DOI
Xiaohong Chen, Zhi Gang Cheng, Lifang Jiao

et al.

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Optimizing the interfacial electronic structure accelerates desorption of activated adsorbed H intermediates, leading to more efficient hydrogen evolution.

Language: Английский

Citations

0
Boosting Hydrogen Evolution Reaction by Sequential Modulation of Elementary Steps on Ru–Ni–P-Coated Cu Nanowires DOI
Xiao Dong Chen, Xiaofei Wei, Zhaojie Wang

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

Language: Английский

Citations

0
Activating Nickel-tungsten alloy for efficient alkaline hydrogen evolution via interface engineering DOI Open Access
Xiao Dong Chen,

Fu Wanyan,

Zhaojie Wang

et al.

Journal of Physics Conference Series, Journal Year: 2025, Volume and Issue: 2962(1), P. 012005 - 012005

Published: Feb. 1, 2025

Abstract The design of unprecious metal catalysts that exhibit both high-performance and durstability presents a significant challenge for hydrogen evolution reaction (HER). Non-precious metal-based 5NiWAg 10 -NiW@CF catalyst with efficient HER catalytic activity was developed synthesized based on interfacial engineering modulation. experimental results show the heterogeneous interface not only promotes exposure active site, but also accelerates transfer electrons. high electrocatalytic activity, achieving an overpotential 118 mV at current density 0.01 A cm −2 . Particularly, favorable kinetics towards in alkaline atmosphere evidenced by its Tafel slope as low 103 dec −1 This work offers new perspective optimization catalysts.

Language: Английский

Citations

0