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Electrolyte and lithium-ion battery

An electrolyte and lithium salt technology, which is applied in the field of electrolyte and lithium-ion batteries, can solve problems such as safety hazards, thermal runaway, fire or explosion of new energy vehicles, and achieve excellent electrochemical performance, high safety, and reduce DC discharge The effect of resistance

Active Publication Date: 2020-12-11
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the heat cannot be dissipated in time, the internal temperature of the battery will continue to rise, which will easily cause thermal runaway, and even cause safety accidents such as fire or explosion, which will bring great safety hazards to new energy vehicles.

Method used

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  • Electrolyte and lithium-ion battery
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  • Electrolyte and lithium-ion battery

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Embodiment Construction

[0012] The electrolyte solution and the lithium ion battery according to the present invention will be described in detail below.

[0013] First, the electrolytic solution according to the first aspect of the present invention will be described.

[0014] The electrolytic solution according to the first aspect of the present invention includes a lithium salt, an organic solvent and additives, and the additives include a first additive and a second additive with an oxidation potential of 4.5V-5.0V.

[0015] In the electrolyte solution of the first aspect of the present invention, the first additive is selected from one or more of the compounds shown in Formula 1. In Formula 1, the substituent R 1 , R 2 Each independently selected from C1-C10 alkyl, C1-C10 alkoxy, C2-C5 alkenyl, C2-C5 alkenyloxy, C2-C5 alkynyl, C2-C5 alkynyloxy, One of C6-C10 aryl and C6-C10 aryloxy, substituent R 3 One selected from C1-C10 alkyl, C2-C5 alkenyl, C2-C5 alkynyl, C6-C10 aryl, wherein the substitu...

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PUM

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Abstract

The invention provides an electrolyte and a lithium ion battery. The electrolyte comprises a lithium salt, an organic solvent and an additive, wherein the additive comprises a first additive with oxidation potential being 4.5-5.0V and a second additive. By the electrolyte, the problem of safety caused by overcharging of the lithium ion battery can be effectively solved, and meanwhile, the DC discharging resistance of the lithium ion battery can be reduced.

Description

technical field [0001] The invention relates to the field of batteries, in particular to an electrolyte and a lithium ion battery. Background technique [0002] In recent years, with the depletion of fossil energy and the seriousness of global environmental pollution, new energy vehicles powered by rechargeable batteries have developed rapidly. Among them, the rechargeable lithium-ion battery stands out for its high energy density, no memory effect, and high working voltage, and has become the preferred solution for the power supply of new energy vehicles. However, the development of the new energy vehicle industry has higher and higher requirements on the energy density, power performance and safety of power lithium-ion batteries, which is a great challenge to traditional lithium-ion batteries. [0003] In order to improve the cruising range of new energy vehicles, the energy density of power lithium-ion batteries must be increased. The usual practice is to use high-capaci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0567H01M10/42H01M10/0525
CPCH01M10/0525H01M10/0567H01M10/4235H01M2300/0025Y02E60/10
Inventor 郇凤韩昌隆
Owner CONTEMPORARY AMPEREX TECH CO
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