化工矿物与加工2024，Vol.53Issue(10)：26-30,5.DOI:10.16283/j.cnki.hgkwyjg.2024.10.004
纳米硒化铁/三维多孔碳负极材料的制备及其电化学性能
Preparation and electrochemical performance of nanoscale iron selenide/three-dimensional porous carbon negative materials
摘要
Abstract
As the negative electrode material for sodium ion batteries,FeSe2 is prone to agglomeration during cycling,leading to a decrease in cycling performance.This problem can be solved by preparing carbon based composite materials.This article uses NaCl as a template and freeze-drying technology to prepare three-dimensional porous carbon(3DPC).At the same time,FeSe2 and FeSe2/3DPC negative electrode materials were prepared by hydrother-mal method.Different proportions of FeSe2/3DPC composite materials were prepared by adjusting the FeSe2 content,and the electrochemical properties of the composite materials were investigated.The results showed that FeSe2/3DPC composite material had better electrochemical performance than FeSe2 and 3DPC.At a rate of 1.0 C,the initial dis-charge specific capacity was 823 mA·h/g,and the reversible discharge specific capacity retention rate was 25.2%after 1 000 cycles.When the mass fraction of FeSe2 is 40%,the material has the highest discharge specific capacity;At the rate of 1.0 C,the reversible discharge specific capacity is 150 mA·h/g after 1 000 cycles,and the electroche-mical performance is optimal.The research results can provide reference for the design of negative electrode materials for sodium ion batteries.关键词
钠离子电池/负极材料/二硒化铁/三维多孔碳/电化学性能/水热法/复合材料/放电比容量Key words
sodium ion battery/negative electrode material/iron diselenide/three-dimensional porous carbon/elec-trochemical performance/hydrothermal method/compound material/discharge specific capacity分类
化学化工引用本文复制引用
王明哲,刘天宇,周子朋,田连网,李东霖,汲佳琦,包硕..纳米硒化铁/三维多孔碳负极材料的制备及其电化学性能[J].化工矿物与加工,2024,53(10):26-30,5.基金项目
国家自然科学基金项目(52004121) （52004121）
辽宁科技大学研究生科技创新项目(S202410146074). （S202410146074）
