Nanoscale Coating of LiMO2 (M = Ni, Co, Mn) Nanobelts with Li+-Conductive Li2TiO3: Toward Better Rate Capabilities for Li-Ion Batteries
Nanoscale Coating of LiMO2 (M = Ni, Co, Mn) Nanobelts with Li+-Conductive Li2TiO3: Toward Better Rate Capabilities for Li-Ion Batteries
复制标题
具有Li导电Li2TiO3的LiMO2（M = Ni、Co、Mn）纳米带的纳米级涂层：提高锂离子电池的倍率能力
DOI：
10.1021/ja308717z
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发表时间：
2013-02-06
影响因子：
15
通讯作者：
Li, Yadong
中科院分区：
文献类型：
--
作者：
Lu, Jun;Peng, Qing;Li, Yadong
采用一种基于MC 2 O 4中心点xH（2）O与Ti（OC 4 H9）（4）反应的新型包覆方法，首次制备了一系列不同Ni、Co、Mn含量的纳米Li 2 TiO 3包覆LiMO 2纳米带。完整的薄Li 2 TiO 3涂层牢固地粘附到主体材料上，并具有Li+离子的3D扩散路径。除了LiMO 2中的Ti 4+之外，它还掺杂有Ni 2+和Co 3+离子，发现这两者都有利于界面处的Li+-离子转移。因此，当用作锂离子电池的阴极时，涂覆的纳米带显示出改善的速率、循环和热性能。
By using a novel coating approach based on the reaction between MC2O4 center dot xH(2)O and Ti(OC4H9)(4), a series of nanoscale Li2TiO3-coated LiMO2 nanobelts with varied Ni, Co, and Mn contents was prepared for the first time. The complete, thin Li2TiO3 coating layer strongly adheres to the host material and has a 3D diffusion path for Li+ ions. It is doped with Ni2+ and Co3+ ions in addition to Ti4+ in LiMO2, both of which were found to favor Li+-ion transfer at the interface. As a result, the coated nanobelts show improved rate, cycling, and thermal capabilities when used as the cathode for Li-ion battery.