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; Liang Chen

doi:10.1038/s41467-018-08144-3

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

Nat Commun. 2019 Jan 11;10(1):162. doi: 10.1038/s41467-018-08144-3.

Authors

Yichao Lin^{1

2}, Ziqi Tian^{1

2}, Linjuan Zhang³, Jingyuan Ma⁴, Zheng Jiang⁴, Benjamin J Deibert⁵, Ruixiang Ge^{1

2}, Liang Chen^{6

7}

Affiliations

¹ Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 315201, Ningbo, Zhejiang, China.
² University of Chinese Academy of Sciences, 100049, Beijing, China.
³ Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, China.
⁴ Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201204, Shanghai, China.
⁵ Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ, 08854, USA.
⁶ Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 315201, Ningbo, Zhejiang, China. chenliang@nimte.ac.cn.
⁷ University of Chinese Academy of Sciences, 100049, Beijing, China. chenliang@nimte.ac.cn.

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 (Cr_0.6Ru_0.4O₂) 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.

Publication types

Research Support, Non-U.S. Gov't