Titania nanotube supported tin anodes for lithium intercalation
Titania nanotube supported tin anodes for lithium intercalation
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DOI：
10.1016/j.elecom.2006.11.001
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发表时间：
2007-04
影响因子：
5.4
通讯作者：
Zhengwei Zhao;Zaiping Guo;D. Wexler;Zifeng Ma;X. Wu;Huakun Liu
中科院分区：
文献类型：
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作者：
Zhengwei Zhao;Zaiping Guo;D. Wexler;Zifeng Ma;X. Wu;Huakun Liu
制备了一种新型的纳米二氧化钛纳米管负载锡负极材料。所制备的二氧化钛纳米管为锐钛矿相，直径约为12 nm。锡纳米粒子被显著地修饰在二氧化钛纳米管上，并且具有约10 nm的粒径。这种新结构保证了在锂嵌入循环时良好的可逆容量保持。充放电测试表明，TiO 2纳米管负载的锡阳极在0.05 ~ 2.0V循环50次后的可逆容量分别为312 mAh/g（循环电压0.05 ~ 1.3V）和203 mAh/g（循环电压0.05 ~ 1.3V），库仑效率约为100%。
A new type of nanostructured titania nanotube supported tin anode was prepared for lithium ion batteries. The as-prepared titania nanotubes are in the anatase phase with diameters of about 12nm. Tin nanoparticles are dramatically decorated on the titania nanotubes and have a particle size of about 10nm. This new structure promises good retention of reversible capacity on cycling for lithium intercalation. By charge/discharge measurements, the reversible capacity of the titania nanotubes supported tin anode for lithiation and de-lithiation was found to be 312mAh/g (cycled between 0.05 and 2.0V) and 203mAh/g (cycled between 0.05 and 1.3V) after 50cycles with around 100% columbic efficiency.