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Lithium ion battery electrolyte and lithium ion battery

A lithium-ion battery and electrolyte technology, applied in the field of lithium-ion batteries, can solve the problems of high and low temperature performance, and achieve the effect of taking into account low temperature performance, improving interface properties, and improving normal temperature and high temperature cycles

Inactive Publication Date: 2019-07-05
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problem that the high and low temperature performance of the existing lithium-ion battery cannot be balanced, and provide a lithium-ion battery electrolyte and a lithium-ion battery. performance electrolyte

Method used

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  • Lithium ion battery electrolyte and lithium ion battery
  • Lithium ion battery electrolyte and lithium ion battery
  • Lithium ion battery electrolyte and lithium ion battery

Examples

Experimental program
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specific Embodiment approach 1

[0015] Specific embodiment one: what this embodiment records is a kind of lithium-ion battery electrolyte, comprises organic solvent, additive Y and lithium salt, and the structural formula of described additive Y is as shown in (I):

[0016]

[0017] Among them, R 1 , R 2 Each independently is a substituted or unsubstituted C 1～6 Alkyl, C 2 -C 6 Any of alkenyl, alkoxy and carboxyl, R 3 for substituted or unsubstituted C 1～20 Alkyl, C 2 -C 6 Any of alkenyl, alkoxy and carboxyl. The unsubstituted refers to an alkyl group that is not substituted by other atoms, that is, the carbon atoms of the alkyl group are all connected with H, and the substitution refers to an alkyl group substituted by certain atoms or groups, such as F, CH 3 Wait.

specific Embodiment approach 2

[0018] Specific embodiment two: a kind of lithium-ion battery electrolyte described in specific embodiment one, described additive Y is a kind of in the following substances:

[0019]

[0020]

specific Embodiment approach 3

[0021] Embodiment 3: The lithium-ion battery electrolyte described in Embodiment 1, the amount of the additive Y accounts for 0.01% to 8% of the total weight of the lithium-ion battery electrolyte.

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Abstract

The invention provides lithium ion battery electrolyte and a lithium ion battery, and belongs to the technical field of lithium ion batteries. The lithium ion battery electrolyte comprises an additiveY, the additive Y is as shown by a structural formula I, wherein R1 and R2 are independently one of substituted or unsubstituted C1-C6 alkyls, C2-C6 alkenyls, alkoxy and carboxyl, and R is any one ofsubstituted or unsubstituted C1-C20 alkyls, C2-C6 alkenyls, alkoxy and carboxyl. The invention further discloses a lithium ion battery. The lithium ion battery electrolyte provided by the invention has the advantages of being able to improve the normal temperature and high temperature cycle of a lithium secondary battery at the same time, and the low temperature performance is also considered.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and in particular relates to a lithium ion battery electrolyte and a lithium ion battery. Background technique [0002] Due to the unique advantages of lithium-ion batteries compared to other secondary batteries, such as good cycle performance, high working voltage and environmental friendliness, lithium-ion batteries have been paid attention to by researchers in recent years and have been widely used in many fields. Has been applied, including consumer batteries such as mobile phones and the defense industry. In recent years, the increasingly serious problems such as environmental pollution have led to the development and application of lithium-ion batteries to the field of new energy vehicles. However, many problems of lithium-ion batteries in the process of using them in electric vehicles have yet to be resolved, such as low-temperature performance and cycle stability. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0567H01M10/0525
CPCH01M10/0525H01M10/0567H01M2300/0025Y02E60/10
Inventor 廖波李素丽母英迪王海王龙徐延铭李俊义
Owner ZHUHAI COSMX BATTERY CO LTD
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