Chlorine-anion doping induced multi-factor optimization in perovskties for boosting intrinsic oxygen evolution

Yinlong Zhu*, Qian Lin, Zhenbin Wang, Dongchen Qi, Yichun Yin, Yu Liu, Xiwang Zhang, Zongping Shao, Huanting Wang

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The oxygen evolution reaction (OER) plays a crucial role in many electrochemical energy technologies, and creating multiple beneficial factors for OER catalysis is desirable for achieving high catalytic efficiency. Here, we highlight a new halogen-chlorine (Cl)-anion doping strategy to boost the OER activity of perovskite oxides. As a proof-of-concept, proper Cl doping at the oxygen site of LaFeO3 (LFO) perovskite can induce multiple favorable characteristics for catalyzing the OER, including rich oxygen vacancies, increased electrical conductivity and enhanced Fe-O covalency. Benefiting from these factors, the LaFeO2.9-δCl0.1 (LFOCl) perovskite displays significant intrinsic activity enhancement by a factor of around three relative to its parent LFO. This work uncovers the effect of Cl-anion doping in perovskites on promoting OER performance and paves a new way to design highly efficient electrocatalysts.
Original languageEnglish
JournalJournal of Energy Chemistry
Volume52
Pages (from-to)115-120
ISSN2095-4956
DOIs
Publication statusPublished - 2021

Keywords

  • Anion doping
  • Halogen chlorine
  • Multiple beneficial factors
  • Oxygen evolution reaction
  • Perovskite oxide

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