Electrolyte and battery

An electrolyte and electrolyte salt technology, which is applied in the field of energy storage materials, can solve the problems such as cycle performance and storage performance need to be improved, and achieve the effects of improving electrochemical performance, inhibiting oxidation, and reducing side reactions.

Active Publication Date: 2021-02-02
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in the above-mentioned electrolyte system. For example, under high voltage and high temperature conditions, the cycle performance and storage performance of the above-mentioned electrolyte system need to be improved.

Method used

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  • Electrolyte and battery
  • Electrolyte and battery
  • Electrolyte and battery

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0153] (2) Preparation of the compound shown in formula I-2:

[0154] The reaction equation is:

[0155]

[0156] The specific preparation process is:

[0157] Mix anhydrous sodium carbonate, raw material P-4 and raw material P-3 in absolute ethanol, react and stir for 2h to 5h; wash with hot ethanol several times to obtain the crude product, and recrystallize to obtain the compound shown in formula I-2.

[0158] (3) Preparation of the compound shown in formula I-3:

[0159] The reaction equation is:

[0160]

[0161] The specific preparation process is:

[0162] Mix anhydrous sodium carbonate, raw materials P-5 and raw materials P-3 in absolute ethanol, react and stir for 2h to 5h; wash with hot ethanol several times to obtain a crude product, and recrystallize to obtain the compound shown in formula I-3.

[0163] The battery according to the second aspect of the present application will be described below.

[0164] The battery according to the second aspect of the...

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Abstract

The application provides an electrolyte solution and a battery. The electrolytic solution includes electrolyte salt and organic solvent, and the organic solvent includes cyclic carbonate and chain carbonate. The electrolyte also includes additive A and additive B. Additive A is a positive electrode film-forming additive, additive B is a negative electrode film-forming additive, and the reduction potential of additive B is higher than that of cyclic carbonate. The electrolyte is 25 ° C The electrical conductivity is 6mS / cm~10mS / cm. The electrolyte solution of the present application can improve the cycle performance and storage performance of the battery, especially the cycle performance and storage performance of the battery under high temperature and high voltage conditions, while also taking into account the low temperature performance of the battery.

Description

technical field [0001] This application relates to the field of energy storage materials, in particular, to an electrolyte and a battery. Background technique [0002] Lithium-ion batteries are widely used in electric vehicles and consumer electronics due to their advantages such as high energy density, high output power, long cycle life and low environmental pollution. The current demand for lithium-ion batteries is: high voltage, high power, long cycle life, long storage life and excellent safety performance. [0003] Lithium-ion batteries are currently widely used in the electrolyte system using lithium hexafluorophosphate as the conductive lithium salt and cyclic carbonate and / or chain carbonate as the organic solvent. However, there are still many deficiencies in the above-mentioned electrolyte system, for example, under the condition of high voltage and high temperature, the cycle performance and storage performance of the above-mentioned electrolyte system need to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0567H01M10/0525
CPCH01M10/0525H01M10/0567H01M10/0568Y02E60/10H01M10/0569H01M2300/004
Inventor 钭舒适胡春华伊天成徐子俊梁成都
Owner CONTEMPORARY AMPEREX TECH CO
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