The superior lithium storage capabilities of ultra-fine rutile TiO2 nanoparticles

被引:109
作者
Chen, Jun Song [1 ]
Lou, Xiong Wen [1 ]
机构
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore
关键词
Titanium dioxide; Rutile; Ultra-fine; High-power anode; Lithium-ion batteries; ANATASE; LI; INTERCALATION; INSERTION; NANOSTRUCTURES; NANOTUBES; DIFFUSION; ELECTRODE;
D O I
10.1016/j.jpowsour.2009.11.040
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
The lithium storage capabilities of ultra-fine rutile TiO2 nanoparticles have been studied. Ultra-fine rutile TiO2 nanoparticles with only several nanometers; in size have been prepared by a modified wet-chemical method with a high yield. Unexpectedly, the rutile TiO2 nanoparticles with 3 nm in size exhibit superior lithium storage properties. Specifically, they show long term cycling stability upon extended cycling for at least 300 cycles with a capacity loss of only 0.17% per cycle, and good rate capability up to a 30 C rate. The excellent reversible lithium storage capabilities could be attributed to the ultra-fine size giving rise to a very short diffusion path, and the relatively large surface area which provides more sites for lithium insertion. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:2905 / 2908
页数:4
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