Electrospun Li4Ti5O12/C composites for lithium-ion batteries with high rate performance

被引：52

作者：

Guo, Bingkun ^{[1
]}

Li, Ying ^{[1
]}

Yao, Yingfang ^{[1
]}

Lin, Zhan ^{[1
]}

Ji, Liwen ^{[1
]}

Xu, Guangjie ^{[1
]}

Liang, Yinzheng ^{[1
]}

Shi, Quan ^{[1
]}

Zhang, Xiangwu ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Text Engn Chem & Sci, Fiber & Polymer Sci Program, Raleigh, NC 27695 USA

来源：

SOLID STATE IONICS | 2011年 / 204卷

基金：

美国国家科学基金会;

关键词：

Lithium-ion batteries; Anodes; Li4Ti5O12; Nanofibers; Nanoparticles; ELECTROCHEMICAL PROPERTIES; SPINEL LI4TI5O12; ANATASE TIO2; INSERTION; CARBON; LI1.33TI1.67O4; FABRICATION; DIFFUSION; 2-PHASE; SIZE;

D O I：

10.1016/j.ssi.2011.10.019

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two types of Li4Ti5O12/C composites were synthesized through the electrospinning method. The first composite consists of Li4Ti5O12 nanoparticles and aggregates coated by carbon and connected by carbon nanofibers. The second composite is constructed solely by Li4Ti5O12/C fibers. These two composites are denoted as Li4Ti5O12/C particles/fibers and Li4Ti5O12/C fibers, respectively. It is found that both composites show higher reversible capacities and better rate performance than commercial Li4Ti5O12 nanoparticles. Comparing the two electrospun composites, Li4Ti5O12/C fibers exhibit higher reversible capacity, greater rate capacity, and smaller electrode polarization, indicating that Li4Ti5O12/C fibers have better kinetics than Li4Ti5O12/C particles/fibers due to the elimination of Li4Ti5O12 aggregates and the formation of carbon-based fiber structure. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：61 / 65

页数：5

共 27 条

[1] Conceptual design for 12 V "lead-free" accumulators for automobile and stationary applications [J].

Ariyoshi, Kingo ;

Ohzuku, Tsutomu .

JOURNAL OF POWER SOURCES, 2007, 174 (02) :1258-1262

[2] On the safety of the Li4Ti5O12/LiMn2O4 lithium-ion battery system [J].

Belharouak, I. ;

Sun, Y.-K. ;

Lu, W. ;

Amine, K. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (12) :A1083-A1087

[3] Size Effects in the Li4+xTi5O12 Spinel [J].

Borghols, W. J. H. ;

Wagemaker, M. ;

Lafont, U. ;

Kelder, E. M. ;

Mulder, F. M. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (49) :17786-17792

[4] Studies of Mg-substituted Li4-xMgxTi5O12 spinel electrodes (0 ≤ x ≤ 1) for lithium batteries [J].

Chen, CH ;

Vaughey, JT ;

Jansen, AN ;

Dees, DW ;

Kahaian, AJ ;

Goacher, T ;

Thackeray, MM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (01) :A102-A104

[5] Carbon-coated Li4Ti5O12 as a high rate electrode material for Li-ion intercalation [J].

Cheng, Liang ;

Li, Xi-Li ;

Liu, Hai-Jing ;

Xiong, Huan-Ming ;

Zhang, Ping-Wei ;

Xia, Yong-Yao .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (07) :A692-A697

[6] SPINEL ANODES FOR LITHIUM-ION BATTERIES [J].

FERG, E ;

GUMMOW, RJ ;

DEKOCK, A ;

THACKERAY, MM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (11) :L147-L150

[7] Electrochemical reduction of nano-SiO2 in hard carbon as anode material for lithium ion batteries [J].

Guo, Bingkun ;

Shu, Jie ;

Wang, Zhaoxiang ;

Yang, Hong ;

Shi, Lihong ;

Liu, Yinong ;

Chen, Liquan .

ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (12) :1876-1878

[8] Epitaxial growth and electrochemical properties of Li4Ti5O12 thin-film lithium battery anodes [J].

Hirayama, Masaaki ;

Kim, Kyungsu ;

Toujigamori, Takeshi ;

Cho, Woosuk ;

Kanno, Ryoji .

DALTON TRANSACTIONS, 2011, 40 (12) :2882-2887

[9] High lithium electroactivity of nanometer-sized rutile TiO2 [J].

Hu, Yong-Sheng ;

Kienle, Lorenz ;

Guo, Yu- Guo ;

Maier, Joachim .

ADVANCED MATERIALS, 2006, 18 (11) :1421-+

[10] Synthesis and Electrode Performance of Nanostructured V2O5 by Using a Carbon Tube-in-Tube as a Nanoreactor and an Efficient Mixed-Conducting Network [J].

Hu, Yong-Sheng ;

Liu, Xi ;

Mueller, Jens-O. ;

Schloegl, Robert ;

Maier, Joachim ;

Su, Dang Sheng .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (01) :210-214

← 1 2 3 →