Chromium-ruthenium oxide solid solution electrocatalyst for highly efficient oxygen evolution reaction in acidic media

Yichao Lin, Ziqi Tian, Linjuan Zhang, Jingyuan Ma, Zheng Jiang, Benjamin J. Deibert, Ruixiang Ge and Liang Chen ()
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Yichao Lin: Chinese Academy of Sciences
Ziqi Tian: Chinese Academy of Sciences
Linjuan Zhang: Chinese Academy of Sciences
Jingyuan Ma: Chinese Academy of Sciences
Zheng Jiang: Chinese Academy of Sciences
Benjamin J. Deibert: The State University of New Jersey
Ruixiang Ge: Chinese Academy of Sciences
Liang Chen: Chinese Academy of Sciences

Nature Communications, 2019, vol. 10, issue 1, 1-13

Abstract: Abstract The development of active, acid-stable and low-cost electrocatalysts for oxygen evolution reaction is urgent and challenging. Herein we report an Iridium-free and low ruthenium-content oxide material (Cr0.6Ru0.4O2) derived from metal-organic framework with remarkable oxygen evolution reaction performance in acidic condition. It shows a record low overpotential of 178 mV at 10 mA cm−2 and maintains the excellent performance throughout the 10 h chronopotentiometry test at a constant current of 10 mA cm−2 in 0.5 M H2SO4 solution. Density functional theory calculations further revealed the intrinsic mechanism for the exceptional oxygen evolution reaction performance, highlighting the influence of chromium promoter on the enhancement in both activity and stability.

Date: 2019
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DOI: 10.1038/s41467-018-08144-3

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