Microwave-assisted hydrothermal synthesis of nanostructured spinel Li4Ti5O12 as anode materials for lithium ion batteries

被引：56

作者：

Liu, Jian ^{[1
]}

Li, Xifei ^{[1
]}

Yang, Jinli ^{[1
]}

Geng, Dongsheng ^{[1
]}

Li, Yongliang ^{[1
]}

Wang, Dongniu ^{[1
]}

Li, Ruying ^{[1
]}

Sun, Xueliang ^{[1
]}

Cai, Mei ^{[2
]}

Verbrugge, Mark W. ^{[2
]}

机构：

[1] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

[2] Gen Motors R&D Ctr, Warren, MI 48090 USA

来源：

ELECTROCHIMICA ACTA | 2012年 / 63卷

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

Li4Ti5O12; Microwave-assisted hydrothermal method; Lithium ion batteries; Anode material; ELECTROCHEMICAL PROPERTIES; HIGH-POWER; INSERTION; ELECTRODES; CARBON; LI1.33TI1.67O4; STORAGE; OXIDES;

D O I：

10.1016/j.electacta.2011.12.077

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanoflower-like and nanoparticle spinel Li4Ti5O12 were synthesized by a microwave-assisted hydrothermal (MH) method following calcination. As-prepared Li4Ti5O12 was characterized by scanning electron microscopy, transmission electron microscopy. X-ray powder diffraction and cyclic voltammetry. The nanoflower-like and nanoparticle Li4Ti5O12 exhibited discharge capacities of 176.7 and 109.8 mAh g(-1), respectively, for the first cycle, and maintained reversible capacities of 38.4 and 91.7 mAh g(-1), respectively, at a 1.1 C-rate (200 mA g(-1)) after 100 cycles. The better performance of nanoflower-like Li4Ti5O12 relative to nanoparticle Li4Ti5O12 is attributed to the larger specific surface area and shorter Li+ diffusion path of the former relative to the latter. The MH preparation process is straightforward and fast; thus it shows promise for widespread lithium ion battery applications. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：100 / 104

页数：5

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