The invention discloses an electrolyte, a lithium ion battery and a vehicle. The electrolyte comprises a lithium salt, an organic solvent and an additive; the additive comprises an amido cyclic boratecompound shown as a formula (I), and the optional ranges of R1, R2 and R3 are respectively and independently fluorine substituted or unsubstituted C1-C20 alkyl, fluorine substituted or unsubstitutedC1-C20 alkenyl, fluorine substituted or unsubstituted C1-C20 alkynyl, fluorine substituted or unsubstituted aryl and fluorine substituted or unsubstituted sulfonyl; and at least one of R1, R2 and R3 is a fluorine-substituted or unsubstituted sulfonyl group. When the electrolyte is applied to the battery, the rate capability of the battery can be remarkably improved, the cycle life of the battery can be remarkably prolonged, and particularly the cycle performance of the battery under high charge-discharge rate is improved, so the battery has longer service life.
本发明公开了电解液及锂离子电池和车辆。其中,该电解液包括:锂盐、有机溶剂和添加剂,所述添加剂包含如式(I)所示胺基环硼酸酯化合物,R1、R2、R3的可选范围分别独立地为氟取代或未取代的C1~C20烷基、氟取代或未取代的C1~C20烯基、氟取代或未取代的C1~C20炔基、氟取代或未取代的芳基、氟取代或未取代磺酰基,且R1、R2和R3中至少之一为氟取代或未取代磺酰基。将该电解液用于电池中可以显著提高电池的倍率性能和循环寿命,尤其是电池在高充放电倍率下的循环性能,使电池具有更长的使用寿命,
Electrolyte, lithium ion battery and vehicle
电解液及锂离子电池和车辆
11.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / C07F Acyclische, carbocyclische oder heterocyclische Verbindungen, die andere Elemente als Kohlenstoff, Wasserstoff, Halogen, Sauerstoff, Stickstoff, Schwefel, Selen oder Tellur enthalten , ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM |
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