期刊
ACS CATALYSIS
卷 8, 期 1, 页码 526-530出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.7b03319
关键词
FeOOH; F modification; oxygen evolution reaction; ethanol oxidation; H-2 production
资金
- National Natural Science Foundation of China [21776099, 51621001]
- Pearl River and SAMP
- T Nova Program of Guangzhou [201610010076]
- Fundamental Research Funds for the Central Universities [2017JQ007]
Highly active, earth-abundant anode catalysts are urgently required for the development of electrolytic devices for hydrogen generation. However, the reaction efficiencies of most developed electrocatalysts have been intrinsically limited due to their insufficient adsorption of reactants leading to high energy intermediates. Here, we establish that electronegative fluorine can moderate the binding energy between the Fe sites (FeOOH) and reactants (OH- or C2H5O-), resulting in more optimized adsorption, and can enhance the positive charge densities on the Fe sites to facilitate oxygen evolution reaction (OER) and ethanol oxidation. Consequently, a low electrolytic voltage (1.43 V to achieve 10 mA cm(-2)) for H-2 production was obtained by integrating the efficiently anodic behaviors of OER and ethanol oxidation. The results reported herein point to fluorine moderation as a promising pathway for developing optimal electrocatalysts and contribute to ongoing efforts of mimicking water splitting.
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