Low-temperature synthesis of nanosized disordered carbon spheres as an anode material for lithium ion batteries

被引：68

作者：

Yi, Zonghui ^{[1
]}

Liang, Yongguang ^{[1
]}

Lei, Xuefeng ^{[1
]}

Wang, Chiwei ^{[1
]}

Sun, Jutang ^{[1
]}

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

来源：

MATERIALS LETTERS | 2007年 / 61卷 / 19-20期

基金：

中国国家自然科学基金;

关键词：

disordered carbon spheres; hydrothermal method; anode material; lithium ion batteries;

D O I：

10.1016/j.matlet.2007.01.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Disordered carbons in the order of nanometers were prepared by a hydrothermal reaction route. X-ray diffraction studies indicated a highly disordered carbon structure. SEM and TEM results revealed that these disordered carbons have a perfect spherical morphology, smooth surface and uniform particle size of about 100 nm. The lithium intercalation property of the products was also investigated. The results showed that the products delivered lithium insertion and deinsertion capacities of 1233 and 491 mA h g(-1) respectively during the first cycle. Subsequent cycles showed a remarkable improvement in cycling efficiency with a 10th cycle efficiency of 98%. The correlation between microstructure, morphology and electrochemical behavior of such carbons was discussed. (c) 2007 Elsevier B.V All rights reserved.

引用

页码：4199 / 4203

页数：5

共 32 条

[1] Negative electrodes for lithium- and sodium-ion batteries obtained by heat-treatment of petroleum cokes below 1000°C [J].