| 锂离子电池和双电层电容器用LiODFB-TEABF4复合盐电解液的研究 |
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| 引用本文： | 刘萍,李凡群,李劼,卢海,张治安,赖延清.锂离子电池和双电层电容器用LiODFB-TEABF4复合盐电解液的研究[J].中南大学学报(自然科学版),2010,41(6). |
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| 作者姓名： | 刘萍 李凡群 李劼 卢海 张治安 赖延清 |
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| 作者单位： | 中南大学冶金科学与工程学院; |
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| 基金项目： | 国家科技支撑计划项目，国家自然科学基金资助项目 |
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| 摘 要： | 探讨在EC+PC+DMC复合溶剂体系中LiODFB-TEABF4复合盐电解液与LiFePO4锂离子电池及AC双电层电容器的相容性规律.研究结果表明:在LiODFB基电解液中加入TEABF4能显著提高电解液的电导率;对于LiFePO4电池体系,电解液中的TEABF4参与了SEI膜的成膜过程,但TEABF4浓度过高不利于电极材料的容量的提高;对于AC电容器体系,加入TEABF4可以有效改善电容器的双电层储能行为,同时显著提高电容,当TEABF4浓度为0.3 mol/L时,电容达到最大,比不添加TEABF4的纯LiODFB盐电解液的电容大.
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| 关 键 词： | LiODFB TEABF4 LiFePO4 活性炭 锂离子电池 双电层电容器 |
LiODFB-TEABF4 composite electrolyte for Li-ion battery and double-layer capacitor |
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| LIU Ping,LI Fan-qun,LI Jie,LU Hai,ZHANG Zhi-an,LAI Yan-qing.LiODFB-TEABF4 composite electrolyte for Li-ion battery and double-layer capacitor[J].Journal of Central South University:Science and Technology,2010,41(6). |
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| Authors: | LIU Ping LI Fan-qun LI Jie LU Hai ZHANG Zhi-an LAI Yan-qing |
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| Institution: | LIU Ping,LI Fan-qun,LI Jie,LU Hai,ZHANG Zhi-an,LAI Yan-qing (School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | The compatibilities between LiODFB/TEABF4-based electrolytes with blend solvent EC+PC+DMC and Li-ion battery or double-layer capacitor were investigated.The results show that TEABF4 obviously enhances the conductance of electrolyte.In LiFePO4 battery system,TEABF4 is concerned with the formation of SEI film,but high concentration's addition prevents the capacity release of electrode material.In activated carbon capacitor system,TEABF4 improves double-layer capacitance behavior and increases capacity effecti... |
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| Keywords: | LiODFB TEABF4 LiFePO4 activated carbon Li-ion battery double-layer capacitor |
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