Hierarchical rutile TiO2 with mesocrystalline structure for Li-ion and Na-ion storage
Hierarchical rutile TiO2 with mesocrystalline structure for Li-ion and Na-ion storage
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具有介晶结构的分级金红石 TiO2 用于锂离子和钠离子存储
DOI：
10.1016/j.electacta.2016.04.017
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发表时间：
2016-06
影响因子：
6.6
通讯作者：
Wei Mingdeng
中科院分区：
文献类型：
--
作者：
Hong Zhensheng;Hong Jiaxing;Xie Chaobing;Huang Zhigao;Wei Mingdeng
In this paper, we report a one-step and additive-free route for synthesizing hierarchical rutile TiO2with mesocrystalline structure. The rutile TiO2architecture constructed by oriented tiny nanorod subunits (around 5 nm in diameter) have nano/submicro hierarchical structures, nanoporous nature, a relatively large surface area and high tapped density. When the hierarchical rutile TiO2was studied as anode material for Li-ion batteries (LIBs), they exhibited a high reversible capacity of more than 250 mAh g−1within a voltage window of 1–3 V, superior rate capability and very good cycling stability with 220 mAh g−1after 100 cycles at 0.1 A g−1. It’s notable that the hierarchical rutile TiO2exhibited superior Li-ion storage properties under deep cycling conditions (0.01-3.0 V), a stable capacity of 346 mAh g−1after 100 cycles at 0.1 A g−1could be remained. The hierarchical TiO2also displayed a large reversible capacity of more than 255 mAh g−1(average value) at 0.05 A g−1and good cycling performance for Na-ion insertion. These results, in combination with high volumetric storage capacity, render hierarchical rutile TiO2a promising anode material for rechargeable batteries.
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