Mg-Doping improves the performance of Ru-based electrocatalysts for the acidic oxygen evolution reaction

Zheng Li; Shuo Wang; Yuanyuan Tian; Baihai Li; Hao Jun Yan; Shuai Zhang; Zhaoming Liu; Qiuju Zhang; Yichao Lin; Liang Chen

doi:10.1039/c9cc09613b

Mg-Doping improves the performance of Ru-based electrocatalysts for the acidic oxygen evolution reaction

Chem Commun (Camb). 2020 Feb 7;56(11):1749-1752. doi: 10.1039/c9cc09613b. Epub 2020 Jan 16.

Authors

Zheng Li¹, Shuo Wang², Yuanyuan Tian², Baihai Li³, Hao Jun Yan⁴, Shuai Zhang⁴, Zhaoming Liu⁵, Qiuju Zhang⁶, Yichao Lin⁶, Liang Chen⁶

Affiliations

¹ School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China. lzm100@163.com and Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China. yclin@nimte.ac.cn zhangqj@nimte.ac.cn.
² Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China. yclin@nimte.ac.cn zhangqj@nimte.ac.cn.
³ School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China.
⁴ Ningbo Electric Power Design Institute, Ningbo, Zhejiang 315000, China.
⁵ School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China. lzm100@163.com.
⁶ Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China. yclin@nimte.ac.cn zhangqj@nimte.ac.cn and University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.

PMID: 31942911
DOI: 10.1039/c9cc09613b

Abstract

Magnesium doped ultra-fine RuO₂ nanoparticles are prepared by a one-step annealing of Ru-exchanged Mg-MOF-74. Mg-RuO₂ exhibits excellent oxygen evolution reaction performance with a low overpotential of 228 mV at 10 mA cm^-2. The excellent performance is attributed to the altered electronic structure and the optimized surface atomic arrangement.