Design of amorphous high-entropy FeCoCrMnBS (Oxy) hydroxides for boosting oxygen evolution reaction

IF 10.8 2区 化学 Q1 CHEMISTRY, PHYSICAL
Xin Han , Zhihao Cheng , Jinfeng Zhang , Jie Liu , Cheng Zhong , Wenbin Hu
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Abstract

The efficient electrocatalysts towards the oxygen evolution reaction (OER) are vital for water splitting. Herein, a novel FeCoCrMnBS high-entropy (Oxy) hydroxide (HEH) is synthesized on a nickel foam (NF) surface via a facile approach. The FeCoCrMnBS HEH possesses a porous morphology composed of plentiful ultra-thin nanosheets with the amorphous structure. The obtained FeCoCrMnBS/NF electrode exhibits exceptional electrocatalytic OER activity in alkaline solution, requiring only 290 ​mV overpotential for 100 ​mA ​· ​cm−2. Moreover, this catalyst displays a long-term durability of over 120 ​h at 10 ​mA ​· ​cm−2. The enhanced catalytic performance benefits from the unique amorphous structure and the positive synergy effect between B and S, promoting the formation of SO42− and thus weakening the adsorption of intermediates in OER on the catalyst surface. This work provides a new strategy for the design of desirable OER electrocatalysts.

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来源期刊
物理化学学报
物理化学学报 化学-物理化学
CiteScore
16.60
自引率
5.50%
发文量
9754
审稿时长
1.2 months
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