文献类型：期刊文献

英文题名：Facile preparation of porous high-entropy alloy FeCoNiCuMn and its OER performance

作者：Zhao, Chongjun[1];Cai, Wenlei[1];Sun, Nan[1];Chen, Shi[1];Jing, Wenbin[1];Zhao, Chunhua[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2024

卷号：184

外文期刊名：JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS

收录：;EI(收录号：20234114848969);WOS:【SCI-EXPANDED(收录号:WOS:001087767200001)】；

基金：We are grateful for the support of National Natural Science Foundation of China (22075082) , Natural Science Foundation of Shanghai (No. 19ZR1413000, 13ZR1411900) , Shanghai Alliance Plan (No. LM201881, LM201751) , Shanghai Leading Academic Discipline Project (B502) , and Shanghai Key Laboratory Project (08DZ2230500) .

语种：英文

外文关键词：High-entropy alloys; FeCoNiCuMn; Template; Zn; Oxygen evolution reaction (OER)

摘要：A high-entropy metal-organic framework (MOF) is synthesized as a precursor by using a one-step solvothermal method, which is converted into a face-centered cubic high-entropy alloy (FeCoNiCuMnZn) after the thermal reduction in an Ar/H2 atmosphere. Due to its low boiling point, metallic Zn, as a sacrificial template, is evaporated from the alloy during the thermal reduction process and leaves room or pore, and thus porous highentropy alloy nanoparticles (FeCoNiCuMn-NPs) form. The porous high-entropy alloy nanoparticles have the largest electrochemically active surface area (3810 cm2), and exhibit excellent OER performance: At a current density of 10 mA cm-2, the overpotential is 196 mV, and the Tafel slope 55 mV dec- 1. In addition, the porous high-entropy alloys nanoparticles-based electrode remain stable even after 75 h of continuous operation.