摘要
采用简单高效的两步法制备交联结构的碳/氮双掺杂Fe3O4锂离子电池阳极复合材料(Fe3O4/C/N)。利用XRD、XPS、TG、SEM、TEM对其进行了表征与分析。当具有交联状纳米结构的复合材料Fe3O4/C/N用作锂离子电池的阳极材料时,展现出较高的可逆容量及优异的循环性能。在电流密度为0.2 A/g的条件下,交联状Fe3O4/C/N的首次库伦效率为73.9%,循环210圈后,容量仍达516 mA·h/g,容量保持率为64.6%,每个循环周期的容量衰减率为0.17%。
Interconnected carbon/nitrogen double-doped Fe3O4(Fe3O4/C/N)composite as anode material for lithium-ion battery was prepared by a simple and efficient two-step method.Fe3O4/C/N composite was characterized and analyzed by XRD,XPS,TG,SEM and TEM.It was found that Fe3O4/C/N composite as anode material for lithium-ion battery showed high reversible capacity and excellent cycling performance.The initial coulomb efficiency of Fe3O4/C/N was 73.9%at a current density of 0.2 A/g.The capacity was 516 mA·h/g after 210 cycles,and the capacity retention rate was 64.6%.The capacity decay rate for each cycle was 0.17%.
作者
吴启超
战蕾宇
张沉鱼
蒋荣立
龙钟艳
王琳
Wu Qichao;Zhan Leiyu;Zhang Chenyu;Jiang Rongli;Long Zhongyan;Wang Lin(College of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2020年第2期356-361,共6页
Fine Chemicals
基金
国家自然科学基金(51674262)
2018江苏省高等学校大学生创新创业训练计划项目(201810290080X).
关键词
FE3O4
掺杂
交联状
锂离子电池
阳极材料
有机电化学与工业
Fe3O4
doping
interconnected structure
lithium-ion batteries
anode materials
electro-organic chemistry and industry
