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Lithium ion battery non-aqueous electrolyte and lithium ion battery containing non-aqueous electrolyte

A lithium-ion battery, non-aqueous electrolyte technology, applied in the field of lithium-ion battery non-aqueous electrolyte and lithium-ion battery, can solve the problems of gas swelling, excessive capacity decay, etc., achieve inhibition of decomposition reaction, excellent cycle performance, prevent The effect of the reaction between the electrolyte and the electrode material

Active Publication Date: 2020-11-03
XIANGHE KUNLUN NEW ENERGY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The non-aqueous electrolyte of the lithium-ion battery can solve the problems of rapid capacity attenuation and severe inflation at high temperature in the circulation of the non-aqueous electrolyte of the current lithium-ion battery

Method used

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  • Lithium ion battery non-aqueous electrolyte and lithium ion battery containing non-aqueous electrolyte
  • Lithium ion battery non-aqueous electrolyte and lithium ion battery containing non-aqueous electrolyte
  • Lithium ion battery non-aqueous electrolyte and lithium ion battery containing non-aqueous electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of LiNi 0.5 co 0.2 mn 0.3 o 2 / Artificial graphite battery, including positive pole (NCM523 from Mengguli), negative pole (artificial graphite P15 from Shanshan), separator (PP / PE from Dinghao), and electrolyte, wherein the electrolyte is a non-aqueous electrolyte, And the total weight of the non-aqueous electrolyte is 100%, containing the components shown in Table 1, Example 1, and 12% LiPF in mass percent 6 Salt.

Embodiment 2

[0039] A kind of LiNi 0.5 co 0.2 mn 0.3 o 2 / Artificial graphite battery, including positive pole (NCM523 from Mengguli), negative pole (artificial graphite P15 from Shanshan), separator (PP / PE from Dinghao), and electrolyte, wherein the electrolyte is a non-aqueous electrolyte, And the total weight of the non-aqueous electrolyte is 100%, containing the components shown in Table 1, Example 2, and 12% LiPF in mass percent 6 Salt.

Embodiment 3

[0041] A kind of LiNi 0.5 co 0.2 mn 0.3 o 2 / Artificial graphite battery, including positive pole (NCM523 from Mengguli), negative pole (artificial graphite P15 from Shanshan), separator (PP / PE from Dinghao), and electrolyte, wherein the electrolyte is a non-aqueous electrolyte, And the total weight of the non-aqueous electrolytic solution is 100%, containing the components shown in the mass percent of Table 1 Example 3 and 12% LiPF 6 Salt.

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Abstract

The present invention provides a lithium ion battery non-aqueous electrolyte and a lithium ion battery. The lithium ion battery non-aqueous electrolyte comprises a compound additive having a structurerepresented by the following formula I, the additive can effectively inhibit the decomposition reaction of a solvent on a positive electrode and a negative electrode, and can rapidly generate a protection film on the positive electrode and the negative electrode, and the electrolyte is prevented from reacting with an electrode material, so that the electrolyte is more stable in the battery, and the cycle performance and the high-temperature storage performance of the lithium ion battery can be effectively improved.

Description

technical field [0001] The invention belongs to the field of lithium ion batteries, and relates to a lithium ion battery nonaqueous electrolyte and a lithium ion battery. Background technique [0002] With the development of new energy vehicles, power storage and high-performance digital products, people have higher requirements for the performance and application range of batteries, which requires the development of lithium-ion batteries that can meet the growing demand. It is especially important to improve the cycle life and temperature suitability of the battery. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a lithium-ion battery non-aqueous electrolyte and a lithium-ion battery. The non-aqueous electrolyte of the lithium-ion battery can solve the problems of rapid capacity attenuation and severe inflation at high temperature in the circulation of the non-aqueous electrolyte of the cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0567H01M10/0525
CPCH01M10/0567H01M10/0525H01M2300/0025Y02E60/10
Inventor 朱少华申海鹏孙春胜张和平赖定坤
Owner XIANGHE KUNLUN NEW ENERGY MATERIALS CO LTD
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