A dealloyed bulk FeNi pattern with exposed highly active facets for cost-effective oxygen evolution
作者:Peng, WL (Peng, Weiliang) [1] , [2] ; Li, YY (Li, Yuyin) [3] ; Yuan, B (Yuan, Bin) [1] , [2] ; Hu, RZ (Hu, Renzong) [1] , [2] ; Luo, ZT (Luo, Zhengtang) [3] ; Zhu, M (Zhu, Min) [1] , [2]
(由 Clarivate 提供)
卷323
文献号122171
DOI10.1016/j.apcatb.2022.122171
出版时间APR 2023
已索引2022-12-18
文献类型Article
摘要
Porous materials are attractive substrates for oxygen evolution reaction (OER), however, suffer from sluggish kinetics because of weak catalyst-support interaction and low conductivity. Here, a porous FeNi alloy layer with exposed high active facets was developed on commercially-available bulk FeNi materials. The designed hier-archical structure can significantly promote the interaction between substrate and Ni-Fe layered double hy-droxide catalyst, and remain high conductivity of bulk metal substrate. The obtained OER electrode exhibits an ultra-small overpotential of 298 mV to deliver industrial required current density of 1000 mA cm-2, while retaining catalytic activity for 1350 h at room temperature and over 100 h even at 80 degrees C. Notably, the alkaline water electrolyzer using this OER electrode exhibits a super-low voltage of 1.46 V for a current density of 10 mA cm-2. Our novel strategy opens up an inexpensive solution for the design of OER electrodes with high catalytic activity and excellent stability.
关键词
作者关键词FeNi alloyPreferential etchingSelf-supporting electrodesOxygen evolution reactionWater splitting
Keywords PlusLAYERED DOUBLE-HYDROXIDEBIFUNCTIONAL ELECTROCATALYSTSTAINLESS-STEELNI FOAMEFFICIENTPERFORMANCENICKELALLOYPLANEELECTRODES
作者信息
通讯作者地址
Yuan, Bin;
Zhu, Min
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
通讯作者地址
Luo, Zhengtang
(通讯作者)
Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Kowloon, Clear Water Bay, Hong Kong 999077, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
2 Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou, Peoples R China
3 Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Kowloon, Clear Water Bay, Hong Kong 999077, Peoples R China
电子邮件地址apsheng@scut.edu.cnkeztluo@ust.hkmemzhu@scut.edu.cn
类别/分类
研究方向ChemistryEngineering
引文主题
2 Chemistry
2.62 Electrochemistry
2.62.76 Oxygen Reduction Reaction
Sustainable Development Goals
07 Affordable and Clean Energy
Web of Science 类别Chemistry, PhysicalEngineering, EnvironmentalEngineering, Chemical