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An Efficient Turing‐Type Ag 2 Se‐CoSe 2 Multi‐Interfacial Oxygen‐Evolving Electrocatalyst **
Author(s) -
Zhang XiaoLong,
Yang PengPeng,
Zheng YaRong,
Duan Yu,
Hu ShaoJin,
Ma Tao,
Gao FeiYue,
Niu ZhuangZhuang,
Wu ZhiZheng,
Qin Shuai,
Chi LiPing,
Yu Xingxing,
Wu Rui,
Gu Chao,
Wang ChengMing,
Zheng XuSheng,
Zheng Xiao,
Zhu JunFa,
Gao MinRui
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202017016
Subject(s) - oxygen evolution , electrocatalyst , electrochemistry , chemistry , chemical physics , oxygen , materials science , electrode , organic chemistry
Although the Turing structures, or stationary reaction‐diffusion patterns, have received increasing attention in biology and chemistry, making such unusual patterns on inorganic solids is fundamentally challenging. We report a simple cation exchange approach to produce Turing‐type Ag 2 Se on CoSe 2 nanobelts relied on diffusion‐driven instability. The resultant Turing‐type Ag 2 Se‐CoSe 2 material is highly effective to catalyze the oxygen evolution reaction (OER) in alkaline electrolytes with an 84.5 % anodic energy efficiency. Electrochemical measurements show that the intrinsic OER activity correlates linearly with the length of Ag 2 Se‐CoSe 2 interfaces, determining that such Turing‐type interfaces are more active sites for OER. Combing X‐ray absorption and computational simulations, we ascribe the excellent OER performance to the optimized adsorption energies for critical oxygen‐containing intermediates at the unconventional interfaces.