期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 47, 页码 15471-15475出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201809220
关键词
cobalt oxides; dynamic migration; fluoride; oxygen evolution reaction; surface reconstruction
资金
- National Basic Research Program of China [2107YFA0206703]
- Natural Science Foundation of China [21893075011, 91745113, 11621063]
- National Program for Support of Top-notch Young Professionals
- Fundamental Research Funds for the Central Universities [WK 2060190084]
- Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology
Fluorine-anion surface engineering has now been used to activate catalytic active species, representing a completely new way of reconstruction toward oxygen evolution reaction (OER) active species. The electronegativity of the fluorine anion is the strongest so that it will be much easier to form weak metal-fluorine bonds with stronger ionicity, contributing to the dynamic migration of fluorine anions and finally enriching on the surface of both cobalt-based oxide/oxyhydroxide. Surface enrichment of fluorine anions endows more hydrophilic surface character for accelerating the key process of oxygen-related intermediate adsorption. Combining with an obviously improved electron transfer capacity, the FCoOOH/NF catalyst exhibits a greatly enhanced OER activity (270 mVat 10 mA cm(-2)) and reaction kinetics (54 mV dec(-1)) in alkaline medium. Surface anion engineering introduces a new concept for rational design advanced OER catalysts for energy conversion system.
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