Journal article · Ahead of Print article
Chlorine-anion doping induced multi-factor optimization in perovskties for boosting intrinsic oxygen evolution
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.
Language: | English |
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Year: | 2021 |
Pages: | 115-120 |
ISSN: | 20954956 |
Types: | Journal article and Ahead of Print article |
DOI: | 10.1016/j.jechem.2020.03.055 |
ORCIDs: | Wang, Zhenbin , 0000-0002-9207-2452 , 0000-0001-8466-0257 and 0000-0002-9887-5555 |