期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 24, 页码 14483-14488出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta03882e
关键词
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资金
- Hunan Provincial Innovation Foundation for Postgraduate [CX2018B181]
- National Natural Science Foundation of China [21573066, 21825201, 2187350]
- U.S. DOE Office of Science Facility, at Brookhaven National Laboratory [DE-SC0012704]
Herein, we effectively modulate the electronic structure of Co3Fe layered double hydroxides (LDHs) by F-doping using a CHF3-plasma etching technique. CHF3-plasma can selectively fill oxygen vacancies with F- ions that can drastically tune the electronic structure with the highest electronegativity and create metal vacancies at the same time. The as-obtained F-Co3Fe LDH ultrathin nanosheets exhibit excellent oxygen evolution reaction (OER) properties. The outstanding electrochemical activity can be attributed to the incorporation of F- ions that strongly modulate the charge distribution of surrounding atoms to facilitate the adsorption of OER intermediates. This work provides a simple way to create metal vacancies and selectively fill oxygen vacancies with fluorine at the same time, and brings about a deep understanding of the electronic environment-activity relationship of LDHs for the OER.
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