Simple synthesis and particle size effects of TiO2 nanoparticle anodes for rechargeable lithium ion batteries

被引：104

作者：

Rai, Alok Kumar ^{[1
]}

Anh, Ly Tuan ^{[1
]}

Gim, Jihyeon ^{[1
]}

Mathew, Vinod ^{[1
]}

Kang, Jungwon ^{[1
]}

Paul, Baboo Joseph ^{[1
]}

Song, Jinju ^{[1
]}

Kim, Jaekook ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Mat Sci & Engn, Kwangju 500757, South Korea

来源：

ELECTROCHIMICA ACTA | 2013年 / 90卷

基金：

新加坡国家研究基金会;

关键词：

Anatase TiO2; Anode; Particle size; Electrochemical properties; Li-ion batteries; ANATASE; NANOTUBES; FILMS; INTERCALATION; NANOCRYSTALS; PERFORMANCE; STORAGE;

D O I：

10.1016/j.electacta.2012.11.104

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Urea-assisted auto-combustion synthesis was used for the easy and scalable preparation of TiO2 nanoparticles for use as anodes in lithium-ion batteries. The prepared TiO2 powder was annealed at 300 degrees C, 400 degrees C, 500 degrees C and 600 degrees C to optimize the system and assess the effects of particle size on electrochemical properties. X-ray diffraction patterns confirmed that pure anatase phase TiO2 formed at up to 500 degrees C, above which mixed phases of anatase and rutile emerged. Field-emission transmission electron microscopy showed that spherical particles of 8-25 nm were formed. The electrochemical performances of annealed TiO2 samples were tested by charging/discharging, C-rate measurement and electrochemical impedance spectroscopy. It was clearly found that the crystal particle size has a striking impact on the Li insertion behavior and lithium storage capability. TiO2 nanoparticles electrode annealed at lower temperature 300 degrees C showed high rate capability, excellent capacity retention and high electrical conductivity due to its very small particles and nonideal crystal lattices. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：112 / 118

页数：7

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