RuO2 clusters derived from bulk SrRuO3: Robust catalyst for oxygen evolution reaction in acid

Muwei Ji, Xin Yang, Shengding Chang, Wenxing Chen, Jin Wang*, Dongsheng He, Yao Hu, Qian Deng, You Sun, Bo Li, Jingyu Xi, Tomoaki Yamada, Jiatao Zhang, Hai Xiao, Caizhen Zhu, Jia Li*, Yadong Li*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Developing highly efficient oxygen evolution reaction (OER) catalyst for the acidic corrosive operating conditions is a challenging task. Herein, we report the synthesis of uniform RuO2 clusters with ∼ 2 nm in size via electrochemical leaching of Sr from SrRuO3 ceramic in acid. The RuO2 clusters exhibit ultrahigh OER activity with overpotential of ∼ 160 mV at 10 mA·cmgeo−2 in 1.0 M HClO4 solution for 30-h testing. The extended X-ray absorption fine structure measurement reveals enlarged Jahn-Teller distortion of RuO octahedra in the RuO2 clusters compared to its bulk counterpart. Density function theory calculations show that the enhanced Jahn-Teller distortion can improve the intrinsic OER activity of RuO2. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1959-1965
Number of pages7
JournalNano Research
Volume15
Issue number3
DOIs
Publication statusPublished - Mar 2022

Keywords

  • RuO cluster
  • acid solution
  • electrochemical leaching
  • oxygen evolution reaction

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