CN109980280A - 一种园林工具用防过充锂电池电解液 - Google Patents

一种园林工具用防过充锂电池电解液 Download PDF

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CN109980280A
CN109980280A CN201910045932.0A CN201910045932A CN109980280A CN 109980280 A CN109980280 A CN 109980280A CN 201910045932 A CN201910045932 A CN 201910045932A CN 109980280 A CN109980280 A CN 109980280A
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parts
lithium
overcharge
lithium battery
battery electrolytes
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卢正山
蔡廷寅
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Anhui Yisheng Mechanical And Electrical Technology Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/056Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566Liquid materials
    • H01M10/0567Liquid materials characterised by the additives
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00Electrolytes
    • H01M2300/0017Non-aqueous electrolytes
    • H01M2300/0025Organic electrolyte
    • H01M2300/0028Organic electrolyte characterised by the solvent
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00Electrolytes
    • H01M2300/0088Composites
    • H01M2300/0091Composites in the form of mixtures
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Manufacturing & Machinery (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
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Abstract

本发明涉及锂电池技术领域,具体是公开了一种园林工具用防过充锂电池电解液,由下列重量份的原料制成:锂盐20‑25份、有机溶剂40‑60份、阻燃功能添加剂4‑10份、抗过充功能添加剂4‑8份、其他添加剂2‑10份,本发明克服了现有技术的不足,添加阻燃功能添加剂则在极端情况下保护电解液防止其起火燃烧,同时将二草酸硼锂酰胺化后作防过充添加剂,在溶利中容易离解而得到更多的自由离子,提高电解液体系的导电能力,提高了锂电池的热稳定性,且具有过充保护和阻燃双重效果,另外添加1,2‑双(三乙氧基硅基)乙烷的加入与有机溶剂相互作用,改善溶解性的同时,还可以改善电极过程的可逆性,降低电极上活性物质的脱落,降低电化学极化,延长电池循环寿命2倍以上。

Description

一种园林工具用防过充锂电池电解液
技术领域
本发明涉及锂电池技术领域,具体属于一种园林工具用防过充锂电池电解液。
背景技术
当锂电池过充时,锂离子电池正负极会超负荷,因此会产生一系列副反应。正极电位过高易氧化电解液中的非水有机溶剂,但在过充时氧化非水溶剂放出的热量远远大于常规充放电所释放的热量,并且在过充到一定程度时,负极表面会发生锂的沉积,这会使电池的性能急剧下降,严重时更会发生热量的大面积扩散、电池内部短路等问题,增加了电池起火爆炸的可能性。
发明内容
本发明的目的是提供了一种园林工具用防过充锂电池电解液,来解决现有锂电池过充时,容易发生热量的大面积扩散、电池内部短路、电池起火爆炸等缺陷。
为解决上述问题,本发明所采取的技术方案如下:
一种园林工具用防过充锂电池电解液,由下列重量份的原料制成:锂盐20-25份、有机溶剂40-60份、阻燃功能添加剂4-10份、抗过充功能添加剂4-8份、其他添加剂2-10份。
进一步,由下列重量份的原料制成:锂盐22份、有机溶剂48份、阻燃功能添加剂6份、抗过充功能添加剂5份、其他添加剂4份。
进一步,有机溶剂包含碳酸甲乙酯、碳酸二甲酯、碳酸二乙酯、碳酸乙烯酯及碳酸丙烯酯中的一种或几种。
进一步,所述锂盐为六氟磷酸锂、高氯酸锂、四氟硼酸锂、双草酸硼酸锂、双氟草酸硼酸锂、二(三氟甲基磺酰)亚胺锂、双氟磺酰亚胺锂盐中的一种或多种。
进一步,所述阻燃功能添加剂为氟代环状碳酸酯、氟代链状碳酸酯、烷基-全氟代烷基醚中的至少一种。
进一步,所述其他添加剂为1,2-双(三乙氧基硅基)乙烷。
进一步,抗过充功能添加剂为酰胺化的二草酸硼锂。
本发明与现有技术相比较,本发明的实施效果如下:
本发明所述一种园林工具用防过充锂电池电解液,添加阻燃功能添加剂则在极端情况下保护电解液防止其起火燃烧,同时将二草酸硼锂酰胺化后作防过充添加剂,在溶利中容易离解而得到更多的自由离子,从而提高电解液体系的导电能力,提高了锂电池的热稳定性,且具有过充保护和阻燃双重效果,另外添加 1,2-双 (三乙氧基硅基)乙烷的加入与有机溶剂相互作用,改善溶解性的同时,还可以改善电极过程的可逆性,降低电极上活性物质的脱落,降低电化学极化,延长电池循环寿命2倍以上。
具体实施方式
下面结合实施例对本发明作进一步的描述,但本发明不仅限于这些实例,在为脱离本发明宗旨的前提下,所为任何改进均落在本发明的保护范围之内。
实施例1
本发明所述的一种园林工具用防过充锂电池电解液,由下列重量份的原料制成:锂盐22份、有机溶剂48份、阻燃功能添加剂6份、抗过充功能添加剂5份、其他添加剂4份。
有机溶剂包含碳酸甲乙酯、碳酸二甲酯、碳酸二乙酯、碳酸乙烯酯及碳酸丙烯酯中的一种或几种。
所述锂盐为六氟磷酸锂、高氯酸锂、四氟硼酸锂、双草酸硼酸锂、双氟草酸硼酸锂、二(三氟甲基磺酰)亚胺锂、双氟磺酰亚胺锂盐中的一种或多种。
所述阻燃功能添加剂为氟代环状碳酸酯、氟代链状碳酸酯、烷基-全氟代烷基醚中的至少一种。
所述其他添加剂为1,2-双(三乙氧基硅基)乙烷。
抗过充功能添加剂为酰胺化的二草酸硼锂。
以上内容仅仅是对本发明构思所作的举例和说明,所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,只要不偏离发明的构思或者超越本权利要求书所定义的范围,均应属于本发明的保护范围。

Claims (7)

1.一种园林工具用防过充锂电池电解液,其特征在于:由下列重量份的原料制成:锂盐20-25份、有机溶剂40-60份、阻燃功能添加剂4-10份、抗过充功能添加剂4-8份、其他添加剂2-10份。
2.根据权利要求1所述的一种园林工具用防过充锂电池电解液,其特征在于:由下列重量份的原料制成:锂盐22份、有机溶剂48份、阻燃功能添加剂6份、抗过充功能添加剂5份、其他添加剂4份。
3.根据权利要求1或2任一项所述的一种园林工具用防过充锂电池电解液,其特征在于:有机溶剂包含碳酸甲乙酯、碳酸二甲酯、碳酸二乙酯、碳酸乙烯酯及碳酸丙烯酯中的一种或几种。
4.根据权利要求1或2任一项所述的一种园林工具用防过充锂电池电解液,其特征在于:所述锂盐为六氟磷酸锂、高氯酸锂、四氟硼酸锂、双草酸硼酸锂、双氟草酸硼酸锂、二(三氟甲基磺酰)亚胺锂、双氟磺酰亚胺锂盐中的一种或多种。
5.根据权利要求1或2任一项所述的一种园林工具用防过充锂电池电解液,其特征在于:所述阻燃功能添加剂为氟代环状碳酸酯、氟代链状碳酸酯、烷基-全氟代烷基醚中的至少一种。
6.根据权利要求1或2任一项所述的一种园林工具用防过充锂电池电解液,其特征在于:所述其他添加剂为1,2-双(三乙氧基硅基)乙烷。
7.根据权利要求1或2任一项所述的一种园林工具用防过充锂电池电解液,其特征在于:抗过充功能添加剂为酰胺化的二草酸硼锂。
CN201910045932.0A 2019-01-18 2019-01-18 一种园林工具用防过充锂电池电解液 Withdrawn CN109980280A (zh)

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EP4099467A4 (en) * 2020-01-30 2024-01-03 Panasonic Intellectual Property Management Co., Ltd. ADDITIVE FOR NON-AQUEOUS ELECTROLYTE SOLUTIONS, CONTAINING THIS NON-AQUEOUS ELECTROLYTE SOLUTION AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4099467A4 (en) * 2020-01-30 2024-01-03 Panasonic Intellectual Property Management Co., Ltd. ADDITIVE FOR NON-AQUEOUS ELECTROLYTE SOLUTIONS, CONTAINING THIS NON-AQUEOUS ELECTROLYTE SOLUTION AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

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Application publication date: 20190705