摘要
We selected a maleimide-based branched oligomer (BO) as a high-temperature and long-cycle-life additive and studied the influence of different amounts of the BO additive on the electrochemical performance of lithium-ion batteries. The electrochemical performances of the additive-containing electrolytes in combination with a cell composed of a LiCoO2 cathode and a mesocarbon microbead (MCMB) anode were tested in coin cells. The cyclic voltammetry (CV) results showed that the oxidation potential of the BO is about 1.9 V versus Li/Li+ and a thin film grown on the surface of the cathode. In the present work, 1.0 wt.% BO in 1.0 M LiPF6/EC:DEC (4:6 by vol.%) electrolyte was the optimal condition for the improvement of the cycle ability of battery, especially, at high temperature (55 °C) condition.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 72-77 |
頁數 | 6 |
期刊 | Electrochimica Acta |
卷 | 85 |
DOIs | |
出版狀態 | 已出版 - 15 12月 2012 |