Hexagonal FeNi2Se4@C Nanoflakes as High Performance Anode Materials for Sodium-ion Batteries

作     者：MA Cui QIU Licheng BAO Jian ZHOU Yongning MA Cui;QIU Licheng;BAO Jian;ZHOU Yongning

作者机构：Department of Materials ScienceFudan UniversityShanghai200433P.R.China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2021年第37卷第2期

页      面：318-322页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：This work was supported by the National Natural Science Foundation of China(No.52071085) the Science and Technology Commission of Shanghai Municipality,China(No.19ZR1404200) 

主　　题：Sodium-ion battery Metal selenide Anode Sodium storage 

摘      要：Metal selenides have drawn significant attention as promising anode materials for sodium-ion batteries(SIBs)owing to their high electronic conductivity and reversible ***,hexagonal FeNi2Se4@C nanoflakes were synthesized via a facile one-step hydrothermal *** deliver a reversible capacity of 480.7 mA·h/g at 500 mA/g and a high initial Coulombic efficiency of 87.8%.Furthermore,a discharge capacity of 444.8 mA·h/g can be achieved at 1000 mA/g after 180 *** sodium storage mechanism of FeNi2Se4@C is *** the discharge process,Fe and Ni nanoparticles are generated and distributed in Na2Se matrix *** the charge process,FeNi2Se4 phase is formed *** reversible phase conversion of FeNi2Se4@C during cycling is responsible for the excellent electrochemical performance and enables FeNi2Se4@C nanoflakes promising anode materials for SIBs.