Metallic MoOx layer promoting high-valence Mo doping into CoP nanowires with ultrahigh activity for hydrogen evolution at 2000 mA cm(-2)

Zhou, Ya-Nan ¹Hu, Wen-Hui ²Zhen, Yi-Nuo ¹Dong, Bin ¹Dong, Yi-Wen ¹Fan, Ruo-Yao ¹Liu, Bin ¹Liu, Da-Peng ¹Chai, Yong-Ming¹

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作者信息

1. China Univ Petr East China
2. Marquette Univ
折叠

Abstract

High-valence metals such as Mo, W, etc. can modulate the adsorption and desorption energy of 3d-metal-based electrocatalysts, favorable for the intrinsic activity for hydrogen evolution reaction (HER) at large current density. However, the facile and exact incorporation of high-valence metals remains a big challenge. Herein, a metallic MoOx layer has been designed via anodization of Mo foil to achieve high-valence Mo doping into CoP to finally form the real active component Mo-CoP for HER. The activated metallic MoOx layer provides an optimized Mo doping into CoP, obtaining Mo-CoP/MoOx with~& nbsp;226 mV (alkaline) and~& nbsp;275 mV (acidic) at > 2000 mA cm(-2). Meanwhile, in-situ grown F-Mo-CoP/MoOx controllable treated by fluoroaniline possesses enhanced the structural robustness of Mo-CoP/MoOx with long-term stability at large current density. This work not only illustrates the facile approach of regulating electron structure via high-valence metal doping, but it also provides the rational strategy for enhanced stability for industrial applications.

Key words

High-valence doping/Metallic MoOx/CoP/Fluoroaniline/Hydrogen evolution reaction/ENHANCED ELECTROCHROMIC PROPERTIES/ELECTROCATALYST/ARRAYS

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出版年

2022

Applied Catalysis

ISSN：0926-3373

被引量23

参考文献量48

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