Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 7, 2015
Previous Article Next Article

Carbon-protected bimetallic carbide nanoparticles for a highly efficient alkaline hydrogen evolution reaction

Author affiliations

Abstract

The hydrogen evolution reaction (HER) is one of the two important half reactions in current water-alkali and chlor-alkali electrolyzers. To make this reaction energy-efficient, development of highly active and durable catalytic materials in an alkaline environment is required. Herein we report the synthesis of carbon-coated cobalt–tungsten carbide nanoparticles that have proven to be efficient noble metal-free electrocatalysts for alkaline HER. The catalyst affords a current density of 10 mA cm−2 at a low overpotential of 73 mV, which is close to that (33 mV) required by Pt/C to obtain the same current density. In addition, this catalyst operates stably at large current densities (>30 mA cm−1) for as long as 18 h, and gives nearly 100% Faradaic yield during alkaline HER. The excellent catalytic performance (activity and stability) of this nanocomposite material is attributed to the cooperative effect between nanosized bimetallic carbide and the carbon protection layer outside the metal carbide. The results presented herein offer the exciting possibility of using carbon-armoured metal carbides for an efficient alkaline HER, although pristine metal carbides are not, generally, chemically stable enough under such strong alkaline conditions.

Graphical abstract: Carbon-protected bimetallic carbide nanoparticles for a highly efficient alkaline hydrogen evolution reaction

Back to tab navigation

Supplementary files

Article information


Submitted
26 Oct 2014
Accepted
08 Jan 2015
First published
12 Jan 2015

Nanoscale, 2015,7, 3130-3136
Article type
Paper

Carbon-protected bimetallic carbide nanoparticles for a highly efficient alkaline hydrogen evolution reaction

Y. Liu, G. Li, L. Yuan, L. Ge, H. Ding, D. Wang and X. Zou, Nanoscale, 2015, 7, 3130
DOI: 10.1039/C4NR06295G

Social activity

Search articles by author

Spotlight

Advertisements