首页|Fabrication of amorphous FeCoNiCuMnPx high-entropy phosphide/carbon composites with a heterostructured fusiform morphology for efficient oxygen evolution reaction

Fabrication of amorphous FeCoNiCuMnPx high-entropy phosphide/carbon composites with a heterostructured fusiform morphology for efficient oxygen evolution reaction

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Amorphous high-entropy materials with abundant defects,coordinatively unsaturated sites,and loosely bonded atoms could exhibit excellent electrocatalytic performance.However,how to fabricate such ma-terials with nanostructure as well as amorphous structure is still full of challenges.In this work,high-entropy metal organic framework(HE-MOF)is employed as the self-sacrificial template to fabricate FeCoNiCuMnPx high-entropy phosphide/carbon(HEP/C)composites.The obtained composite shows a het-erostructured fusiform morphology,in which the HEP is encapsulated by a carbon layer,revealing high electron conductivity as well as rich catalytic active sites for oxygen evolution reaction(OER).Beside,it is found that there is a short-range ordered crystal structure in the amorphous phase,which is bene-ficial for revealing high OER catalytic activity as well as good stability.As a result,the optimum HEP/C composite shows an overpotential 239 mV@10 mA cm-2 with a small Tafel slope of 72.5 mV dec-1 for catalyzing OER in alkaline solution.

Water electrolysisOxygen evolution reactionHigh-entropy MOFsHigh-entropy phosphidesAmorphous structure

Yifan Zhou、Longqing Gao、Haoyuan Chen、Hao Wang、Juan Zhang、Xiumin Li、Fangfang Duo、Guoqing Guan

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School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China

Graduate School of Sustainable Community Studies,Hirosaki University,1-Bunkyocho,Hirosaki 036-8560,Japan

Graduate School of Science and Technology,Hirosaki University,3-Bunkyocho,Hirosaki 036-8561,Japan

Xinxiang University,School of Chemistry & Materials Engineering,Xinxiang 453003,China

Energy Conversion Engineering Laboratory,Institute of Regional Innovation,Hirosaki University,3-Bunkyocho,Hirosaki 036-8561,Japan

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河南省自然科学基金College Students'Innovative Entrepreneurial Training,ChinaHirosaki University,Japan

2023004104332022cxcy029

2024

10.1016/j.jmst.2023.05.054

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.168(1)
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