MOF-mediated synthesis of novel PtFeCoNiMn high-entropy nanoalloy as bifunctional oxygen electrocatalysts for zinc-air battery  

作　　者：Mingkuan Xie Xin Xiao Duojie Wu Cheng Zhen Chunsheng Wu Wenjuan Wang Hao Nian Fayan Li Meng Danny Gu Qiang Xu 

机构地区：[1]Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials(SKLPM),Shenzhen 518055,China [2]Department of Chemistry,Southern University of Science and Technology,Shenzhen 518055,China [3]Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China [4]SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory(SKAEM-JIL),Shenzhen 518055,China [5]Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong,Southern University of Science and Technology,Shenzhen 518055,China [6]Eastern Institute for Advanced Study,Eastern Institute of Technology,Ningbo 315200,China

出　　处：《Nano Research》2024年第6期5288-5297,共10页纳米研究（英文版）

基　　金：the financial support of the Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials(No.ZDSYS20210709112802010);the Shenzhen Science and Technology Innovation Commission(No.GJHZ20220913142610020);Guangdong Grants(No.2021ZT09C064);the National Key Research and Development Program of China(Nos.2022YFA1503900 and 2023YFA1506600)。

摘　　要：High-entropy alloy(HEA)-based materials are expected to be promising oxygen electrocatalysts due to their exceptional properties.The electronic structure regulation of HEAs plays a pivotal role in enhancing their elctrocatalytic ability.Herein,PtFeCoNiMn nanoparticles(NPs)with subtle lattice distortions are constructed on metal-organic framework-derived nitrogen-doped carbon by an ultra-rapid Joule heating process.Thanks to the modulated electronic structure and the inherent cocktail effect of HEAs,the as-synthesized PtFeCoNiMn/NC exhibits superior bifunctional electrocatalytic performance with a positive half-wave potential of 0.863 V vs.reversible hydrogen electrode(RHE)for oxygen reduction reaction and a low overpotential of 357 mV at 10 mA·cm^(-2)for oxygen evolution reaction.The assembled quasi-solid-state zinc-air battery using PtFeCoNiMn/NC as air electrode shows a high peak power density of 192.16 mW·cm^(-2),low charge−discharge voltage gap,and excellent durability over 500 cycles at 5 mA·cm^(-2).This work demonstrates an effective route for rational design of bifunctional nanostructured HEA electrocatalysts with favorable electronic structures,and opens up a fascinating directions for energy storage and conversion,and beyond.

关 键 词：oxygen reduction reaction oxygen evolution reaction high-entropy nano-alloy zinc-air battery 

分 类 号：O643.36[理学—物理化学] TM911.41[理学—化学]