| T_5TFSI用于锂离子电池电解液的性能 |
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| 引用本文： | 董思明,杨立,房少华,李明涛. T_5TFSI用于锂离子电池电解液的性能[J]. 电池, 2009, 39(6) |
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| 作者姓名： | 董思明 杨立 房少华 李明涛 |
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| 作者单位： | 上海交通大学化学化工学院,上海,200240;上海交通大学化学化工学院,上海,200240;上海交通大学化学化工学院,上海,200240;上海交通大学化学化工学院,上海,200240 |
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| 摘 要： | 研究了基于烷基噻吩阳离子的离子液体烷基噻吩二(三氟甲基磺酰)亚胺(T_5TFSI)用于锂离子电池电解液的性能,分析了添加剂碳酸亚乙烯酯(VC)和γ-丁内酯(GBL)的影响.在0.4 mol/L的二(三氟甲基磺酰)亚胺锂(LiTFSI)/T_5TFSI中分别加入10%的VC或GBL时,0.1 C首次放电的比容量都可达到150 mAh/g.当w(vc)≤10%时,随着w(VC)的增加,电池的首次放电比容量增加,循环稳定性提高.当加入10%的GBL时,以0.1 C循环的库仑效率接近100%;以0.1 C循环100次的容量保持率为60%.
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| 关 键 词： | 烷基噻吩阳离子 烷基噻吩二(三氟甲基磺酰)亚胺(T_5TFSI) 离子液体 添加剂 |
The performance of T_5TFSI used in electrolyte of Li-ion battery |
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| DONG Siming,YANG Li,FANG Shaohua,LI Mingtao. The performance of T_5TFSI used in electrolyte of Li-ion battery[J]. Battery Bimonthly, 2009, 39(6) |
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| Authors: | DONG Siming YANG Li FANG Shaohua LI Mingtao |
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| Abstract: | The performance of alkylthiolanium-based ionic hquid, S-pentylthiolanium bis (trifluoromethane sulfon) imide (T_5TFSI) used in electrolyte of Li-ion battery was researched, the effects of additives vinylene carbonate (VC) and γ-butyrolacton (GBL) were analyzed. When adding 10% VC or GBL into 0.4 mol/L lithium N, N-bis(trifluoromethane sulfon) imide (LiTFSI)/T_5TFSI, the initial specific discharge capacity of the battery could reach to 150 mAh/g at 0.1 C. When w (VC) ≤10%, the initial specific discharge capacity of the battery increased and the cycle stability improved with the increasing of w (VC). When adding 10% GBL, the coulombic efficiency was nearly 100% at 0.1 C, the capacity retention rate was 60% after 100 cycles at 0.1 C. |
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| Keywords: | alkylthiolanium cation S-pentylthiolanium bis(trifluoromethane sulfon)imide(T_5TFSI) ionic liquid additives |
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