Jump to main content
Jump to site search

Issue 5, 2014
Previous Article Next Article

Non-precious metal electrocatalysts with high activity for hydrogen oxidation reaction in alkaline electrolytes

Author affiliations

Abstract

A ternary metallic CoNiMo catalyst is electrochemically deposited on a polycrystalline gold (Au) disk electrode using pulse voltammetry, and characterized for hydrogen oxidation reaction (HOR) activity by temperature-controlled rotating disk electrode measurements in 0.1 M potassium hydroxide (KOH). The catalyst exhibits the highest HOR activity among all non-precious metal catalysts (e.g., 20 fold higher than Ni). At a sufficient loading, the CoNiMo catalyst is expected to outperform Pt and thus provides a promising low cost pathway for alkaline or alkaline membrane fuel cells. Density functional theory (DFT) calculations and parallel H2-temperature programmed desorption (TPD) experiments on structurally much simpler model alloy systems show a trend that CoNiMo has a hydrogen binding energy (HBE) similar to Pt and much lower than Ni, suggesting that the formation of multi-metallic bonds modifies the HBE of Ni and is likely a significant contributing factor for the enhanced HOR activity.

Graphical abstract: Non-precious metal electrocatalysts with high activity for hydrogen oxidation reaction in alkaline electrolytes

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Nov 2013, accepted on 13 Feb 2014 and first published on 13 Feb 2014


Article type: Paper
DOI: 10.1039/C3EE43899F
Author version available: Download Author version (PDF)
Citation: Energy Environ. Sci., 2014,7, 1719-1724
  •   Request permissions

    Non-precious metal electrocatalysts with high activity for hydrogen oxidation reaction in alkaline electrolytes

    W. Sheng, A. P. Bivens, M. Myint, Z. Zhuang, R. V. Forest, Q. Fang, J. G. Chen and Y. Yan, Energy Environ. Sci., 2014, 7, 1719
    DOI: 10.1039/C3EE43899F

Search articles by author

Spotlight

Advertisements