Rambutan-like CoP@Mo-Co-O hollow microspheres for efficient hydrogen evolution reaction in alkaline solution

doi:10.1016/S1872-2067(20)63530-6

Abstract

Abstract: Water electrolysis has attracted a lot of attention in recent years for hydrogen production. CoP has been widely investigated as a traditional electrocatalyst for hydrogen evolution reaction (HER). However, the strong bond strength of P-H bond and weak chemical stability are still the key problems in affecting catalytic performance of CoP. In this work, we synthesized rambutan-like CoP@Mo-Co-O hollow microspheres as HER electrocatalyst, solving the two problems of CoP as electrocatalyst. Benefiting from the unique three-dimensional space structure and interface effect between CoP and Mo-Co-O, the synthesized CoP@Mo-Co-O shows a small overpotential of 62 mV at the current density of 10 mA cm^-2 for HER, which is much lower than the corresponding overpotential of pure CoP microspheres (117 mV). Rambutan-like CoP@Mo-Co-O hollow microspheres also show robust long-term stability and excellent cycling stability. This work provides a new method for the design and improvement of non-precious HER electrocatalysts.

Key words: CoP@Mo-Co-O, Rambutan-like hollow microspheres, Interfacial effect, Hydrogen evolution reaction

CLC Number:

Wen Zhou, Mingmei Wu, Gaoren Li. Rambutan-like CoP@Mo-Co-O hollow microspheres for efficient hydrogen evolution reaction in alkaline solution[J]. Chinese Journal of Catalysis, 2020, 41(4): 691-697.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(20)63530-6

https://www.cjcatal.com/EN/Y2020/V41/I4/691

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