Sulfur-modulated FeNi nanoalloys as bifunctional oxygen electrode for efficient rechargeable aqueous Zn-air batteries

作     者：Hailin Yu Fei Fan Chao He Mi Zhou Tian Ma Yinghan Wang Chong Cheng 余海林;范飞;何超;周密;马田;汪映寒;程冲

作者机构：College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China Department of UltrasoundWest China HospitalSichuan UniversityChengdu 610065China College of Biomass Science and EngineeringSichuan UniversityChengdu 610065China 

基　　金：financially supported by the National Natural Science Foundation of China(22179087,51903178,and 51803134) the Science and Technology Project of Sichuan Province(2021YFH0135) China Postdoctoral Science Foundation(2021M692303) the Post-doctor Research Project and Sichuan University(2021SCU12013) 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2022年第65卷第11期

页      码：3007-3016页

摘      要：Currently,FeNi nanoalloys have received considerable attention for the oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)in rechargeable aqueous zinc(Zn)-air batteries(ZABs)because of their high content and good chemical ***,their poor electronic conductivity,small surface area,and sluggish activity seriously hinder their catalytic ***,S-modulated FeNi nanoalloys supported by hierarchically porous carbon(SFeNi/PC)are synthesized through the thermal treatment of metal-organic precursors for efficient bifunctional oxygen catalysis.S decoration endows S-FeNi/PC with a superior OER performance while maintaining an ORR performance that is comparable to that of Pt/***,S-FeNi/PC exhibits excellent bifunctional oxygen catalytic activity,outperforming the noble-metal-based composite catalysts of Pt/C and RuO_(2).Notably,the ZABs assembled with S-FeNi/PC exhibit high specific capacity(792 mA h g^(-1)),high peak power density(123.5 mW cm^(-2)),and remarkable durability for 700 charge/discharge cycles at 10 mA cm^(-2),which surpasses the performance of commercially available Pt/C-RuOand other catalysts in previously reported *** study will provide not only new bifunctional oxygen electrodes for efficient ZAB devices but also new insights into the design of FeNi-based materials for a wide range of catalytic applications.

主 题 词：bifunctional electrocatalyst FeNi nanoalloys S modulation zinc-air battery energy conversion 

学科分类：0808[工学-自动化类] 081705[081705] 08[工学] 0817[工学-轻工类] 

核心收录：

D　O　I：10.1007/s40843-022-2070-7

馆 藏 号：203113242...