SnSe@C复合材料的结构设计及其储钠性能和反应机理研究  

Structural Design,Sodium-Ion Storage Performance and Reaction Mechanism of SnSe@C Composite

作　　者：黄金鑫 高卫星 孔凡军 陶石 钱斌 HUANG Jinxin;GAO Weixing;KONG Fanjun;TAO Shi;QIAN Bin(School of Electronic and Information Engineering,Changshu Institute of Technology,Changshu 215500;Jiangsu Key Laboratory of Advanced Functional Materials,Changshu Institute of Technology,Changshu 215500;Far East Holding Group Co.,Ltd.,Yixing 214200,China)

机构地区：[1]常熟理工学院电子信息工程学院,江苏常熟215500 [2]常熟理工学院江苏省新型功能材料重点建设实验室,江苏常熟215500 [3]远东控股集团有限公司,江苏宜兴214200

出　　处：《常熟理工学院学报》2022年第2期5-7,12,共4页Journal of Changshu Institute of Technology

基　　金：江苏省双创博士计划(JSSCBS20210743);国家自然科学基金项目“强磁场下磁性拓扑量子材料AMnPn2(A=Ca,Sr,Ba,Eu;Pn=Sb,Bi)的基态调控和多种量子态间耦合机制研究”(U1832147);常熟理工学院大学生创新训练计划项目“过渡金属氧化物复合材料的多孔结构设计及其电化学性能研究”(XJDC2021258)。

摘　　要：采用静电纺丝和退火法制备了具有一维核壳结构的SnSe@C复合材料,并对其作为钠离子电池负极材料进行了研究.得益于自身独特的结构设计,SnSe@C复合材料表现出优异的储钠性能,在1.0 A·g^(-1)高电流密度下500次循环后仍可提供283.8 mAh·g^(-1)可逆容量.利用X射线衍射仪、高分辨率透射电子显微镜和局域电子衍射表征了SnSe的钠离子存储机制.本文为金属硒化物复合材料的结构设计和动力学过程研究提供了新的思路.In this paper,one-dimensional SnSe@C composite with a core-shell structure was prepared by electrostatic spinning and annealing methods,and studied as an anode material for sodium-ion batteries.Owing to its unique structural design,SnSe@C composite exhibited excellent sodium storage properties with a reversible capacity of 283.8 mAh·g^(-1)after 500 cycles at the high current density of 1.0 A·g^(-1).The sodium-ion storage mechanisms of SnSe were characterized by X-ray diffractometry,high resolution transmission electron microscopy and selected area electron diffraction.This work can provide new ideas for the structural design and kinetic process research of metal selenide composites.

关 键 词：硒化锡 静电纺丝 负极材料 钠离子电池 

分 类 号：O469[理学—凝聚态物理]