Jump to main content
Jump to site search


Phase-selective synthesis of self-supported RuP film for efficient hydrogen evolution electrocatalysis in alkaline media

Abstract

Large-scale hydrogen production through alkaline water electrolysis requires highly active and less-expensive materials to replace platinum as catalysts for hydrogen evolution reaction (HER). Ruthenium, as the cheapest platinum-group element, has recently been demonstrated to exhibit excellent activity toward HER. However, achieving better HER activity of ruthenium-based materials by selecting more active phase is still unexplored. Herein, we report the fabrication of self-supported RuP and RuP2 catalyst film on carbon cloth (RuP/CC and RuP2/CC) via a facile, potentially scalable, and phase-controllable synthetic method. The RuP/CC display a superior catalytic activity with a low overpotential of 13 mV at 10 mA cm-1, outperforming RuP2/CC (33 mV at 10 mA cm-1) and most non-Pt HER catalysts. Moreover, good electrochemical stability and Faradaic efficiency of nearly 100% are also demonstrated for RuP/CC. Density functional theory calculations reveal that RuP with higher charge density at Ru site is more favorable for the chemisorption of hydrogen, thereby exhibiting a better HER activity than RuP2.

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 May 2018, accepted on 04 Jul 2018 and first published on 05 Jul 2018


Article type: Communication
DOI: 10.1039/C8NR03554G
Citation: Nanoscale, 2018, Accepted Manuscript
  •   Request permissions

    Phase-selective synthesis of self-supported RuP film for efficient hydrogen evolution electrocatalysis in alkaline media

    R. Ge, S. Wang, J. Su, Y. Dong, Y. Lin, Q. Zhang and L. Chen, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR03554G

Search articles by author

Spotlight

Advertisements