CoFe2O4 nanoparticles directly grown on carbon nanotube with coralline structure as anodes for lithium ion battery

被引：21
作者：
Yu, Meng [1 ]
Feng, Zhenhe [2 ]
Huang, Ying [1 ]
Wang, Ke [1 ]
Liu, Liu [3 ]
机构：
[1] Northwestern Polytech Univ, MOE Key Lab Mat Phys & Chem Extrodinary Condit, Minist Educ, Sch Sci, Xian 710072, Peoples R China
[2] Shanghai Inst Space Power, Shanghai 200245, Peoples R China
[3] Northwestern Polytech Univ, Major English Literature, Sch Foreign Studies, Xian 710072, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2019年 / 30卷 / 04期
基金：
中国国家自然科学基金;
关键词：
HIGH-CAPACITY; ZNFE2O4; NANOPARTICLES; RATE CAPABILITY; LI-STORAGE; PERFORMANCE; CHALLENGES; ELECTRODES; ZN; CO;
D O I：
10.1007/s10854-019-00709-2
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work, tiny CoFe2O4 nanoparticles with a diameter of several nanometers were firmly grown on carbon nanotube (CNT) through a solvothermal process followed with calcination step. The composite shows a coralline structure, where CoFe2O4 nanoparticles are dispersed finely on the surface of CNT. The coralline CoFe2O4-CNT composite electrode can deliver initial discharge/charge capacities of 1183.6/876.1mAhg(-1) at 100mAg(-1), with a Coulombic efficiency reaching up to 74.0%. The capacity drops first but ascends latter when the electrode is cycled 220 times at 200mAg(-1), giving a value of 747.5mAhg(-1) at 220th discharge process. Besides, the composite displays a capacity of 620.8mAhg(-1) even at a high rate of 1600mAg(-1), larger than commercialized graphite (372mAhg(-1)). Thus, coralline CoFe2O4-CNT composite of remarkable electrochemical properties makes it a promising anode for lithium ion batteries.
引用
收藏
页码：4174 / 4183
页数：10
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