Issue 26, 2016

Interconnected urchin-like cobalt phosphide microspheres film for highly efficient electrochemical hydrogen evolution in both acidic and basic media

Abstract

There is an urgent need for active and cost-effective catalysts for electrochemical hydrogen evolution reactions to solve global energy issues. In this study, we report the development of interconnected urchin-like cobalt phosphide microspheres film on Ti foil (u-CoP/Ti) as a monolithic hydrogen-evolving catalyst electrode with high activity and strong durability under acidic and alkaline conditions. It affords 10 mA cm−2 at overpotentials as low as 45 mV with the maintenance of its catalytic activity for at least 15 h in 0.5 M H2SO4, outperforming all reported CoP catalysts. When operated in 1.0 M KOH, u-CoP/Ti is also highly active and demands overpotential of 60 mV to drive 10 mA cm−2 with strong durability.

Graphical abstract: Interconnected urchin-like cobalt phosphide microspheres film for highly efficient electrochemical hydrogen evolution in both acidic and basic media

Supplementary files

Article information

Article type
Communication
Submitted
01 May 2016
Accepted
31 May 2016
First published
01 Jun 2016

J. Mater. Chem. A, 2016,4, 10114-10117

Interconnected urchin-like cobalt phosphide microspheres film for highly efficient electrochemical hydrogen evolution in both acidic and basic media

D. Zhou, L. He, W. Zhu, X. Hou, K. Wang, G. Du, C. Zheng, X. Sun and A. M. Asiri, J. Mater. Chem. A, 2016, 4, 10114 DOI: 10.1039/C6TA03628G

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