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

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

School of Chemistry, Sun Yat-sen University, Guangzhou 510275, Guangdong, China

Received Date: 14 September 2019
Revised Date: 18 October 2019

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