Issue 24, 2020

Ultrafine phosphorus-doped rhodium for enhanced hydrogen electrocatalysis in alkaline electrolytes

Abstract

Herein, we report the synthesis of an ultrafine P-doped Rh catalyst and its outstanding HER/HOR performance in alkaline electrolytes. Experimental analysis and density functional theory calculations reveal that the synergistic tailoring of the electronic structure of Rh through P doping could lead to the reduction of the limiting potential of alkaline HER/HOR, which contributes to the remarkable catalytic performances with about 22-fold enhancement compared with that of Rh/C and commercial Pt/C towards alkaline HER. In addition, P–Rh/C also exhibits excellent catalytic performance towards alkaline HOR, with the exchange current density normalized by metal mass as 0.683 mA μgMetal−1, much higher than that of Rh/C and commercial Pt/C.

Graphical abstract: Ultrafine phosphorus-doped rhodium for enhanced hydrogen electrocatalysis in alkaline electrolytes

Supplementary files

Article information

Article type
Communication
Submitted
21 apr 2020
Accepted
28 may 2020
First published
30 may 2020

J. Mater. Chem. A, 2020,8, 11923-11927

Ultrafine phosphorus-doped rhodium for enhanced hydrogen electrocatalysis in alkaline electrolytes

L. Su, Y. Zhao, F. Yang, T. Wu, G. Cheng and W. Luo, J. Mater. Chem. A, 2020, 8, 11923 DOI: 10.1039/D0TA04260A

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