Activating CoMoS with CoP 3 Phase for High‐efficient Hydrogen Evolution Reaction in Acidic Condition

Currently, the construction of heterostructures to optimize electrocatalytic activities is a hot research topic, since there is still a certain gap between the electrocatalytic properties of these heterostructures and that of Pt/C. With this in mind, we utilized in‐situ vapor‐phase phosphorization‐s...

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Published in:ChemCatChem 2021-03, Vol.13 (5), p.1362-1367
Main Authors: Du, Yunmei, Wang, Wensi, Zhao, Huimin, Jiang, Xianliang, Liu, Yanru, Chen, Ruixin, Yang, Bo, Wang, Lei
Format: Article
Language:English
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Summary:Currently, the construction of heterostructures to optimize electrocatalytic activities is a hot research topic, since there is still a certain gap between the electrocatalytic properties of these heterostructures and that of Pt/C. With this in mind, we utilized in‐situ vapor‐phase phosphorization‐sulfurization to obtain the CoP 3 /MoS 2 −Co 0.75 Mo 3 S 3.75 (CoP/CoMoS, for short) heterostructure on carbon cloth (CC), which exhibits Pt‐like electrocatalytic performance and excellent stability in acid electrolyte. Activated by CoP 3 active phase, the electronic configuration of CoMoS and the adsorption energy of H* (▵G H* ) are greatly optimized. Meanwhile, the rapid oxidation of CoMoS phase can be effectively avoided under the protection of CoP 3 layer. This work provides a reference for the design of heterostructures and their mechanism of action in electrocatalysis.
ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.202001626