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 4 2020
Accepted
28 5 2020
First published
30 5 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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