Flexible free-standing hydrogen-treated titanium dioxide nanowire arrays as a high performance anode for lithium ion batteries
Flexible free-standing hydrogen-treated titanium dioxide nanowire arrays as a high performance anode for lithium ion batteries
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DOI：
10.1039/c4ta03495c
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发表时间：
2014-01-01
影响因子：
11.9
通讯作者：
Li, Jianle
中科院分区：
文献类型：
--
作者：
Liu, Yi;Liu, Chunjie;Li, Jianle
在此，我们制作了灵活的独立的二氧化钛纳米线阵列，并通过氢化产生Ti 3+（氧空位），以提高电导率。氢化的TiO 2纳米线在1C的电流密度下提供517 mA h g（-1）的高可逆容量。此外，氢化-TiO 2纳米线具有优异的倍率性能，因为当电流密度增加到50 C时，它们仍然保持70 mA h g（-1）。氢化的TiO 2纳米线的电化学性能是由于通过氢化形成的Ti 3+（氧空位）引起的TiO 2纳米线的导电性改善。
Herein, we fabricate flexible free-standing TiO2 nanowire arrays and create Ti3+ (oxygen vacancy) via hydrogenation to improve the electrical conductivity. The hydrogenated-TiO2 nanowires deliver a high reversible capacity of 517 mA h g(-1) at a current density of 1 C. Moreover, the hydrogenated-TiO2 nanowires have an excellent rate performance as they still retain 70 mA h g(-1) when the current density increases to 50 C. The electrochemical performance of the hydrogenated-TiO2 nanowires is due to the improved conductivity of TiO2 nanowires arising from the formation of Ti3+ (oxygen vacancy) via hydrogenation.