Oxygen evolution from water using earth abundant transition metal based catalysts is of
importance for the commercialization of water electrolyzer. Herein, we report a novel hard templating method to synthesize transition metal phosphides with uniform shape and size. By virtue of the structural feature, synergistic effect among metals and the in situ formed active species, the as-prepared phosphides with optimized composition present enhanced electrocatalytic performance towards oxygen evolution reaction in alkaline solution. In details, the most efficient catalyst reaches a current density of 10 mA/cm2 at a potential of 1.511 V vs reversible hydrogen electrode, which is much lower than that of commercial RuO2 catalyst. Our work offers a new strategy to optimize the catalysts for water splitting by controlling the morphology and composition.
Revised: November 15, 2016 |
Published: September 15, 2016
Citation
Fu S., C. Zhu, J. Song, M.H. Engelhard, X. Li, D. Du, and Y. Lin. 2016.Highly Ordered Mesoporous Bimetallic Phosphides as Efficient Oxygen Evolution Electrocatalysts.ACS Energy Letters 4, no. 1:792-796.PNNL-SA-120970.doi:10.1021/acsenergylett.6b00408