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Electrolyte, electrochemical device and electronic device comprising same

A technology of electrolyte and content, applied in the field of electrolyte, can solve problems such as safety performance to be improved, and achieve the effect of improving high temperature storage performance

Active Publication Date: 2021-05-18
NINGDE AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of high-power portable electronic appliances, the advantages of soft-pack batteries are becoming more and more prominent, but their safety performance (overcharge, hot box, etc.) needs to be improved

Method used

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  • Electrolyte, electrochemical device and electronic device comprising same
  • Electrolyte, electrochemical device and electronic device comprising same
  • Electrolyte, electrochemical device and electronic device comprising same

Examples

Experimental program
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Embodiment

[0139] The implementation of the present application will be illustrated below in conjunction with the examples. It should be understood that these examples are only used to illustrate the present application and are not intended to limit the scope of protection claimed in the present application.

[0140] Preparation

[0141] Lithium-ion batteries in the following examples and comparative examples are all prepared according to the following method:

[0142] (1) Positive electrode preparation

[0143] The positive electrode active material lithium cobalt oxide (LiCoO 2 ), conductive agent Super P, and polyvinylidene fluoride are mixed according to a weight ratio of 97:1.4:1.6, N-methylpyrrolidone (NMP) is added, and stirred evenly under the action of a vacuum mixer to obtain a positive electrode slurry; the positive electrode slurry Evenly coated on the aluminum foil of the positive electrode current collector; dried at 85°C, then cold-pressed, cut into pieces, and slit, d...

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PUM

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Abstract

The present application relates to an electrolytic solution, an electrochemical device and an electronic device containing the electrolytic solution. The electrolytic solution of the present application comprises a compound of formula (I) and a compound of formula (II). The electrolyte provided by the application can effectively improve the high-temperature storage performance, cycle performance and overcharge performance of the electrochemical device.

Description

technical field [0001] The present application relates to electrolytes, and more particularly, to electrolytes capable of improving the overcharge performance, cycle performance, and storage performance of electrochemical devices (such as lithium-ion batteries) in a balanced manner. The present application also relates to electrochemical and electronic devices comprising an electrolyte solution according to the present application. Background technique [0002] With the continuous advancement of technology, electronic products have higher and higher requirements for batteries, not only requiring higher energy density, but also higher requirements for the use environment of batteries. Soft-pack batteries have certain advantages in terms of volumetric energy density and mass energy density. In the field of high-power portable electronic appliances, the advantages of soft-pack batteries are becoming more and more prominent, but their safety performance (overcharge, hot box, et...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0567H01M10/42H01M10/0525
CPCH01M10/0525H01M10/0567H01M10/4235Y02E60/10
Inventor 刘俊飞张丽兰彭谢学郑建明
Owner NINGDE AMPEREX TECH