A new approach to improve the high-voltage cyclic performance of Li-rich layered cathode material by electrochemical pre-treatment |
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| Authors: | Atsushi Ito Decheng Li Yasuhiko Ohsawa Yuichi Sato |
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| Affiliation: | 1. Department of Applied Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan;2. Nissan Research Center, Nissan Motor Co., Ltd., 1 Natsushima-cho, Yokohama 237-8523, Japan |
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| Abstract: | Lithium-rich nickel–manganese–cobalt oxide, LiNi0.17Li0.2Co0.07Mn0.56]O2, was prepared by a co-precipitation method, and its cyclic behavior at a high potential was investigated. The as-prepared material shows a rapid capacity fading in its initial several cycles when it was operated above 4.5 V, which could be significantly improved through a pre-cycling treatment. Its reversible capacity in the range of 4.8–2 V could be increased from 200 to 250 mAh g−1 after 50 cycle through a stepped pre-cycling treatment. |
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| Keywords: | Li-ion battery Cathode material Li[Ni0 17Li0 2Co0 07Mn0 56]O2 Improved high-voltage cyclic performance Pre-cycled treatment |
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