CN201410270433
CN104037452A
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摘要:本发明公开一种锂离子二次电池电解液,其包括非水溶剂和溶解在非水溶剂中的锂盐,其中,非水溶剂含有质量占非水溶剂总质量0.5%~15%的硼酸衍生物锂盐,所述硼酸衍生物锂盐的结构式下式所示:其中,R1、R2、R3、R4、R5和R6为氢、卤素、烷基、烯烃基、卤代烷基、芳香基、含有卤素取代基的芳香基团或含氧基团中的任一种物质;所述含氧基团为烷氧基、卤代烷氧基、含氧芳香基团或含有卤素取代基的含氧芳香基团;并且,R3、R4、R5和R6中至少有两者为卤素,所述卤素为F或Cl,及R1和R2中至少一者为芳香基团或含有卤素取代基的芳香基团。本发明通过在电解液中添加硼酸衍生物锂盐,在锂离子电池首次充电时,形成稳定、致密、有韧性的SEI膜,改善电解液的低温放电性能以及循环性能。 |
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Abstract: The invention discloses electrolyte of a lithium ion secondary battery. The electrolyte comprises a non-aqueous solvent and a lithium salt dissolving in the non-aqueous solvent, wherein the non-aqueous solvent contains boronic acid derivative lithium salt with the mass accounting for 0.5-15% of the total mass of the non-aqueous solvent; the structure formula of the boronic acid derivative lithium salt is described in the following formula in the specification, wherein R1, R2, R3, R4, R5 and R6 are any in hydrogen, halogens, alkyl bases, alkylene bases, alkyl halide bases, aromatic groups containing halogen substituent bases or oxygen-containing groups; the oxygen-containing groups refer to alkyl bases, halogenated alkoxy bases, oxygen-containing aromatic groups or oxygen-containing aromatic groups containing the halogen substituent bases; at least two of R3, R4, R5 and R6 are halogens which are F or Cl; at least one of R1 and R2 is an aromatic group or aromatic group containing the halogen substituent bases. The invention has the advantages that since the boronic acid derivative lithium salt is added into the electrolyte, when the lithium ion battery is charged for the first time, a stable-compact-flexible SEI (Solid Electrolyte Interphase) film is formed, so that the low-temperature discharging performance and the cycling performance of the electrolyte are improved. | |
申请人: 厦门首能科技有限公司 | |
Applicant: XIAMEN SHOUNENG TECHNOLOGY CO LTD | |
地址: 361004 福建省厦门市湖里区********(隐藏) | |
发明(设计)人: 胡念 王阿忠 赖彩娥 | |
Inventor: HU NIAN; WANG AZHONG; LAI CAIE | |
主分类号: H01M10/0567(2010.01)I | |
分类号: H01M10/0567(2010.01)I H01M10/0525(2010.01)I | |
2016-05-18 | 授权 |
2014-12-03 | 实质审查的生效 IPC(主分类):H01M 10/0567 申请日:20140618 |
2014-09-10 | 公开 |
主权项 | 一种锂离子二次电池电解液,其特征在于:包括非水溶剂和溶解在非水溶剂中的锂盐;非水溶剂含有质量占非水溶剂总质量0.5%~15%的硼酸衍生物锂盐,所述硼酸衍生物锂盐的结构式下式所示:? |
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公开号 | 104037452A | ||||||||||||||||||
公开日 | 2014-09-10 | ||||||||||||||||||
专利代理机构 | 厦门龙格专利事务所(普通合伙) 35207 | ||||||||||||||||||
代理人 | 钟毅虹 | ||||||||||||||||||
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国际公布 | |||||||||||||||||||
进入国家日期 |
类型 | 阶段 | 文献号 | 公开日期 | 涉及权利要求项 | 相关页数 |
A | SEA | CN1280130A | 20010117 | 1-10 | 全文 |
A | SEA | CN1516702A | 20040728 | 1-10 | 全文 |
A | SEA | CN1350709A | 20020522 | 1-10 | 全文 |
A | SEA | US2007269715A1 | 20071122 | 1-10 | 全文 |
类型 | 阶段 | 期刊文摘名称 | 作者 | 标题 | 涉及权利要求项 | 相关页数 |
A | SEA | 《Journal of Power Sources》200611221622 | Sheng Shui Zhang | A review on electrolyte additives for lithium-ion batteries | 1-10 | 全文 |
SHENG SHUI ZHANG: "A review on electrolyte additives for lithium-ion batteries", 《JOURNAL OF POWER SOURCES》 | ||||||
类型 | 阶段 | 书名 | 作者 | 标题 | 涉及权利要求项 | 相关页数 |
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