期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 17, 页码 6929-6935出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202001681
关键词
active electron modulation; Co3O4; ion irradiation; oxo group; oxygen evolution reaction
资金
- National Key R&D Program of China [2018YFA0703700]
- National Natural Science Foundation of China [11722543, U1867215, 11875211, U1932134]
- Fundamental Research Funds for the Central Universities [2042019kf0312]
- Suzhou key industrial technology innovation project [SYG201828]
- Hubei Provincial Natural Science Foundation [2019CFA036]
Despite the fact that many strategies have been developed to improve the efficiency of the oxygen evolution reaction (OER), the precise modulation of the surface electronic properties of catalysts to improve their catalytic activity is still challenging. Herein, we demonstrate that the surface active electron density of Co3O4 can be effectively regulated by an argon-ion irradiation method. X-ray photoelectron and synchrotron x-ray absorption spectroscopy, UV photoelectron spectrometry, and DFT calculations show that the surface active electron density band center of Co3O4 has been upshifted, leading to a significantly enhanced absorption capability of the oxo group. The optimized Co3O4-based catalysts exhibit an excellent overpotential of 260 mV at 10 mA cm(-2) and Tafel slope of 54 mV dec(-1), superior to the capability of the benchmark RuO2, representing one of the best Co-based OER catalysts. This approach could guide the future rational design and discovery of ideal electrocatalysts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据