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

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

机构地区：[1]School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China [2]Graduate School of Sustainable Community Studies,Hirosaki University,1-Bunkyocho,Hirosaki 036-8560,Japan [3]Graduate School of Science and Technology,Hirosaki University,3-Bunkyocho,Hirosaki 036-8561,Japan [4]Xinxiang University,School of Chemistry&Materials Engineering,Xinxiang 453003,China [5]Energy Conversion Engineering Laboratory,Institute of Regional Innovation,Hirosaki University,3-Bunkyocho,Hirosaki 036-8561,Japan

出　　处：《Journal of Materials Science & Technology》2024年第1期62-70,共9页材料科学技术（英文版）

基　　金：supported by the Natural Science Foundation of Henan Province(No.202300410433);the College Students’Innovative Entrepreneurial Training(No.2022cxcy029),China;Hirosaki University,Japan,are appreciated.

摘　　要：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 FeCoNiCuMnP x 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.

关 键 词：Water electrolysis Oxygen evolution reaction High-entropy MOFs High-entropy phosphides Amorphous structure 

分 类 号：TB3[一般工业技术—材料科学与工程]