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

2020; Wiley; Volume: 13; Issue: 5 Linguagem: Inglês

10.1002/cctc.202001626

1867-3899

Yunmei Du, Wensi Wang, Huimin Zhao, Xianliang Jiang, Yanru Liu, Ruixin Chen, Bo Yang, Lei Wang,

Advanced Photocatalysis Techniques

Abstract 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.