Li4Ti5O12/Ti4O7/carbon nanotubes composite anode material for lithium-ion batteries

被引：6
作者：
Zhang, Xiaoyan [1 ,2 ]
Xu, Wen [2 ]
Li, Xing [2 ]
Zhong, Xiaoxi [3 ]
Liu, Wanying [2 ]
Lin, Yuanhua [1 ,2 ]
Xia, Ruochen [4 ]
机构：
[1] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploit, Chengdu, Sichuan 610500, Peoples R China
[2] Southwest Petr Univ, Sch Mat Sci & Engn, Chengdu, Sichuan 610500, Peoples R China
[3] Chengdu Univ Informat Technol, Sichuan Prov Key Lab Informat Mat & Devices Appli, Chengdu 610225, Sichuan, Peoples R China
[4] PetroChina Southwest Oil & Gasfield Co, Chengdu, Sichuan 610000, Peoples R China
来源：
MICRO & NANO LETTERS | 2018年 / 13卷 / 07期
基金：
中国国家自然科学基金;
关键词：
lithium compounds; titanium compounds; carbon nanotubes; nanocomposites; secondary cells; electrochemical electrodes; nanofabrication; electrochemical analysis; electrochemistry; electrical conductivity; charge exchange; nanotube devices; Li4Ti5O12-Ti4O7-C; temperature; 20; degC; electron transfer; electronic conductivity; electrodes; cycle stability; spinel; electrochemical tests; LIB; CNT; lithium-ion batteries; composite anode material; ELECTRODE MATERIAL; OXYGEN REDUCTION; PERFORMANCE; LI4TI5O12;
D O I：
10.1049/mnl.2017.0799
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The work describes a method for preparing Li4Ti5O12 (LTO)/Ti4O7/carbon nanotubes (CNTs) composite as anode material for lithium-ion batteries (LIBs). The electrochemical tests make sure that LTO/Ti4O7/CNTs composite provides excellent electrochemical performance compared with spinel LTO. Notably, the LTO/Ti4O7/CNTs composite exhibits good cycle stability, retaining over 78.5% of its initial capacity after 100 cycles at 20 degrees C, whereas that of spinel LTO is 32.6 mAh g(-1) (35.4% retention). The significantly improved electrochemical performance of the LTO/Ti4O7/CNTs electrodes can be mainly ascribed to the improvement of electronic conductivity and faster electron transfer from the CNTs and Ti4O7. The outstanding electrochemical performance makes it a promising anode material for high-rate and long life LIBs.
引用
收藏
页码：915 / 918
页数：4
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