| 锂离子电池电解液成膜添加剂乙烯基亚硫酸乙烯酯的电化学行为 |
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| 引用本文： | 姚万浩,李劫,张忠如,高军,王周成,杨勇.锂离子电池电解液成膜添加剂乙烯基亚硫酸乙烯酯的电化学行为[J].化学学报,2009,67(22):2531-2535. |
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| 作者姓名： | 姚万浩 李劫 张忠如 高军 王周成 杨勇 |
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| 作者单位： | 1. 厦门大学化学化工学院固体表面物理化学国家重点实验室,厦门,361005
2. 厦门大学化学工程与生物工程系,厦门,361005 |
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| 基金项目： | 国家自然科学基金(Nos.20473068,29985310);;国家“973”计划(No.2007CB209702)资助项目 |
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| 摘 要： | 研究了具有不饱和双键和亚硫酸酯双官能团的乙烯基亚硫酸乙烯酯(VES)作为锂离子电池电解液成膜添加剂对中间相碳微球(CMS)和LiFePO4电极电化学性能的影响. 结果表明: 在1 mol/L LiClO4/PC电解液体系中, 少量的VES (5%)能够在电化学过程中先于PC在CMS表面还原, 形成稳定的SEI膜, 明显抑制PC和溶剂化锂离子共嵌入石墨层间, 改善了电池的循环性能. 此外, 电解液1 mol/L LiClO4/PC＋5%VES (V∶V)在LiFePO4电极中展现出良好的电化学稳定性.
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| 关 键 词： | 乙烯基亚硫酸乙烯酯(VES 电解液添加剂 固体电解质界面(SEI)膜 碳酸丙烯酯 |
| 收稿时间： | 2009-05-05 |
| 修稿时间： | 2009-07-03 |
Electrochemical Behavior of Vinyl Ethylene Sulfite as an Electrolyte Film-forming Additive in Lithium Ion Batteries |
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| Yao Wanhao,Li Jie,Zhang Zhongru,Gao Jun,Wang Zhoucheng,Yang Yong.Electrochemical Behavior of Vinyl Ethylene Sulfite as an Electrolyte Film-forming Additive in Lithium Ion Batteries[J].Acta Chimica Sinica,2009,67(22):2531-2535. |
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| Authors: | Yao Wanhao Li Jie Zhang Zhongru Gao Jun Wang Zhoucheng Yang Yong |
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| Institution: | a State Key Laboratory for Physical Chemistry of Solid Surfaces;College of Chemistry and Chemical Engineering;Xiamen University;Xiamen 361005;b Department of Chemical and Biochemical Engineering;Xiamen 361005 |
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| Abstract: | A film-forming additive, vinyl ethylene sulfite (VES) with both vinylene group and sulfite group, affects the electrochemical performance of carbonaceous mesophase spherules (CMS) and LiFePO4 electrode. The results indicated that a small amount of VES (5%) could be reduced prior to the propylene carbonate (PC) solvent on the surface of CMS electrode in PC-based electrolyte to form a stable solid electrolyte interphase (SEI) layer, so co-intercalation of PC and solvated lithium ions to graphite could be supp... |
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| Keywords: | vinyl ethylene sulfite electrolyte additive solid electrolyte interphase (SEI) layer propylene carbonate |
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