Interconnected urchin-like cobalt phosphide microspheres film for highly efficient electrochemical hydrogen evolution in both acidic and basic media. Issue 26 (17th June 2016)

• Record Type: Journal Article
• Authors: Zhou, Dan; He, Liangbo; Zhu, Wenxin; Hou, Xiandeng; Wang, Kunyang; Du, Gu; Zheng, Chengbin; Sun, Xuping; Asiri, Abdullah M.
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 26(2016)
• Page Start: 10114
• Page End: 10117
• Publication Date: 2016-06-17
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta03628g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Interconnected urchin-like cobalt phosphide microspheres film on Ti foil (u-CoP/Ti) shows high activity for hydrogen evolution electrocatalysis in 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 H2 SO4, 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.