Acta Phys. -Chim. Sin. ›› 2025, Vol. 41 ›› Issue (4): 100033.doi: 10.3866/PKU.WHXB202404023

• ARTICLE • Previous Articles     Next Articles

Design of Amorphous High-Entropy FeCoCrMnBS (Oxy) Hydroxides for Boosting Oxygen Evolution Reaction

Xin Han1, Zhihao Cheng1, Jinfeng Zhang1, Jie Liu1,*(), Cheng Zhong1,2, Wenbin Hu1,2   

  1. 1 Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), and Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
    2 Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
  • Received:2024-04-15 Revised:2024-06-30 Accepted:2024-07-01 Published:2024-12-28
  • Contact: Email: jieliu0109@tju.edu.cn (Jie Liu)
  • Supported by:
    the National Natural Science Foundation of China(52271224); the National Natural Science Foundation of China(51801134); Tianjin Natural Science Foundation(20JCQNJC01130)

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.

Key words: High-entropy (Oxy) hydroxide, Doping, Amorphous structure, Oxygen evolution reaction