CN201810459406
CN108365265A
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摘要:本发明公开了一种锂离子电池非水电解液,该电解液包括非水有机溶剂、导电锂盐和环状磷酸酯或环状亚磷酸酯添加剂,所述磷酸酯添加剂具有式(Ⅰ)的结构,亚磷酸酯具有式(Ⅱ)的结构,其中R独立地选自苯基、卤素、碳原子为1‑5的烷氧基、或碳原子为1‑5的烷基,A为碳原子数为2‑6的被氢原子、卤素或碳原子数为1‑5的烷基/烯基取代的次烷基。本发明还涉及一种锂离子电池。本发明的锂离子非水电解液可以明显改善锂离子电池的内阻并对电池的循环性能具有效果。
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Abstract: The invention discloses a non-aqueous electrolyte for a lithium-ion battery. The non-aqueous electrolyte comprises a non-aqueous organic solvent, conductive lithium salt and a cyclic phosphate or cyclic phosphite additive, wherein the phosphate additive adopts a structure shown as a formula (I), the phosphite adopts a structure shown as a formula (II), and in the formulae, R is independently selected from phenyl, halogen, alkoxy having 1-5 carbon atoms and alkyl having 1-5 carbon atoms and A is alkylidene having 2-6 carbon atoms and substituted by a hydrogen atom, halogen or alkyl/alkenyl having 1-5 carbon atoms. The invention further relates to the lithium-ion battery. The non-aqueous electrolyte for the lithium-ion battery can significantly improve the internal resistance of the lithiumion battery and has an effect on the cycle performance of the battery.
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申请人: 中山弘毅新材料有限公司
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Applicant: ZHONGSHAN HONGYI NEW MAT CO LTD
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地址: 528400 广东省中山市火炬开********(隐藏)
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发明(设计)人: 周文超 赵喜波
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Inventor: ZHOU WENCHAO; ZHAO XIBO
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主分类号: H01M10/0567(2010.01)I
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分类号: H01M10/0567(2010.01)I H01M10/0525(2010.01)I
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