Study of new phases grown on LiNbO3 coated LiCoO2 cathode material with an enhanced electrochemical performance
Study of new phases grown on LiNbO3 coated LiCoO2 cathode material with an enhanced electrochemical performance
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研究在 LiNbO3 涂层 LiCoO2 正极材料上生长新相以增强电化学性能
DOI：
10.1016/j.materresbull.2014.10.044
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发表时间：
2015
影响因子：
5.4
通讯作者：
Lianqi Zhang
中科院分区：
文献类型：
--
作者：
Wenbin Sun;Man Xie;Xixi Shi;Lianqi Zhang
选择快离子导体LiNbO 3作为包覆层，通过溶胶-凝胶法包覆商用LiCoO 2颗粒，然后在不同温度下进行热处理。与传统的涂层材料相反，我们首先报道了由涂层材料LiNbO 3和体材料LiCoO 2之间的反应产生的新涂层，在退火过程中生长。形成的新涂层的组成随煅烧温度而变化。在不同温度下退火的涂层材料的电化学性能表明，形成的新涂层具有有效的提高的循环寿命，相比裸样品。2mol%-800 ° C涂层样品在70次循环后的放电容量为175.2mAh/g，容量保持率为97.1%，显示出最好的循环稳定性。可以推测，形成的Co 3 O 4和Li 3 NbO 4的新涂层具有有效的改善的电化学性能。
LiNbO3, a fast ionic conductor, was chosen as the layer to coat commercial LiCoO2particles through a sol-gel method followed by heat treatment at various temperatures. As opposed to conventional coating materials, we first report new coating layer resulting from the reaction between coating material LiNbO3and bulk material LiCoO2, is grown during annealing. The composition of formed new coating layer varies with the calcination temperature. Electrochemical properties of the coated material annealed at different temperatures indicated that the formed new coating layer had an effective enhancement of the cycle life, compared to a bare sample. 2 mol%–800 °C-coated sample has a discharge capacity of 175.2 mAh/g after 70 cycles with capacity retention of 97.1%, showing the best cycling stability. It can be speculated that the formed new coating layer of Co3O4and Li3NbO4has an effective improvement of the electrochemical performance.
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影响因子：
3.9
作者：
Jaephil Cho;Y. J. Kim;Byungwoo Park
通讯作者：
Jaephil Cho;Y. J. Kim;Byungwoo Park
影响因子：
3.2
作者：
Lijun Liu;Zhaoxiang Wang;Hong Li;Liquan Chen;Xuejie Huang
通讯作者：
Lijun Liu;Zhaoxiang Wang;Hong Li;Liquan Chen;Xuejie Huang
影响因子：
9.2
作者：
G. Fey;H. Kao;P. Muralidharan;T. P. Kumar;Yung-Da Cho
通讯作者：
G. Fey;H. Kao;P. Muralidharan;T. P. Kumar;Yung-Da Cho
影响因子：
9.2
作者：
Ki-Soo Lee;Seung‐Taek Myung;Dong‐Won Kim;Yang‐Kook Sun
通讯作者：
Ki-Soo Lee;Seung‐Taek Myung;Dong‐Won Kim;Yang‐Kook Sun
影响因子：
5.4
作者：
G. Fey;Y. Lin;T. P. Kumar
通讯作者：
G. Fey;Y. Lin;T. P. Kumar