Li1.15Mn0.49Ni0.18Co0.18O2 nanoplates with exposed (012) plane as high energy and power cathode of Li-ion batteries

被引:10
作者
Luo, Dong [1 ]
Wang, Guojun [1 ]
Fang, Shaohua [1 ]
Yang, Li [1 ,2 ,3 ]
Hirano, Shin-ichi [2 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Hirano Inst Mat Innovat, Shanghai 200240, Peoples R China
[3] Shanghai Electrochem Energy Devices Res Ctr, Shanghai 200240, Peoples R China
基金
中国国家自然科学基金;
关键词
Li-rich layered oxides; nanoplates with exposed; facet; rate capability; the transport distance of lithium ions; HIGH-PERFORMANCE CATHODE; SUPERIOR RATE-CAPABILITY; HIGH-CAPACITY; ELECTROCHEMICAL PERFORMANCE; ASSISTED SYNTHESIS; LAYERED OXIDES; RICH CATHODE; LITHIUM; COMBUSTION;
D O I
10.1016/j.electacta.2016.10.033
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
In this work, Li1.15Mn0.49Ni0.18Co0.18O2 nanoplates with exposed (012) facet are prepared for the first time by co-precipitation method under the assistance of cetyltrimethyl ammonium bromide. As cathode materials of lithium-ion batteries, the Li1.15Mn0.49Ni0.18Co0.18O2 nanoplates can deliver the initial discharge capacities of 219.8 and 192 mA h g(-1) at 300 and 700 mA g(-1), respectively. It suggests the Li1.15Mn0.49Ni0.18Co0.18O2 nanoplates possess an excellent rate capability. After 200 cycles, the capacity \retention ratio at 700 mA g(-1) is still as large as 82.6%. The superior rate capability can be attributed to the shorter transport distance of lithium ions in these nanoplates with exposed (012) facet. The above results also indicate that the electrochemical performances of Li-rich layered oxides can be improved by allocating proper facets. (C) 2016 Published by Elsevier Ltd.
引用
收藏
页码:516 / 523
页数:8
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