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Electrolyte and application thereof

An electrolyte and lithium-ion battery technology, which is applied in the field of electrolyte, can solve the problems of battery life reduction, achieve the effects of reducing side reactions, improving high-temperature cycle and storage performance, and improving high-temperature cycle and storage characteristics

Pending Publication Date: 2022-02-25
ENVISION DYNAMICS TECH (JIANGSU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The energy storage cell is affected by the environment in which it is used. Using it in a high-heat area and generating heat can cause the working temperature to exceed 45°C. During this period, the life of the cell will be shortened sharply when it is cycled.

Method used

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  • Electrolyte and application thereof

Examples

Experimental program
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Embodiment 1

[0035] This embodiment provides an electrolyte, which is composed of an electrolytic solution as follows: a component of about 3: 4: 3 compared to a non-aqueous organic solvent, and 14 wt% LIPF 6 After mixing, and with respect to 100 parts by weight of the nonaqueous electrolyte gottenter, the mass fraction of tetraethylene silane is 0.1%, and the mass fraction of vinyl carbonate is 2%.

Embodiment 2

[0037] This embodiment provides an electrolyte composition that is composed of an EC / EMC / DMC / PC of about 3: 4: 3: 2, and is mixed into a non-aqueous organic solvent, and with 12WT % LIPF 6 After mixing, and with respect to 100 parts by weight of the nonaqueous electrolyte solution, the mass fraction of tetraethylene silane is 0.2%, and the mass fraction of vinyl carbonate is 2.5%.

Embodiment 3

[0039] This embodiment provides an electrolyte, which is composed of an electrolytic solution as follows: a component of about 3: 4: 3 compared to a non-aqueous organic solvent, and 14 wt% LIPF 6 After mixing, and with respect to 100 parts by weight of the nonaqueous electrolyte solution, the mass fraction of tetraethylene silane is 0.005%, and the mass fraction of vinyl carbonate is 2%.

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Abstract

The invention provides an electrolyte and application thereof. The electrolyte comprises a non-aqueous solvent, a lithium salt and an additive. The additive comprises tetraethylene silane and vinylene carbonate, the tetraethylene silane and vinylene carbonate are added into the electrolyte, and the cycle and storage performance of a battery at the high temperature of 45-60 DEG C can be improved.

Description

Technical field [0001] The present invention belongs to the technical field of lithium ion batteries, involving an electrolyte and its application thereof. Background technique [0002] Come in with the guidance of global market demand and policy regulations, new energy electric vehicles and energy storage services have grown sharply; one of them is one of the main technical routes of the electrical cell chemistry, and lithium iron phosphate materials is broadcasted. Source, high security features, accounting for higher market share. In particular, its low cost and high security features have been favored in the energy storage industry. [0003] The energy storage battery is affected by the environment. It is used in high heat regions to generate calories that produce heat over 45 ° C, and the battery cells are drastically reduced during this period. [0004] It is necessary to develop an electrolytic solution that takes into account circulating performance and storage properties...

Claims

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Application Information

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IPC IPC(8): H01M10/0567H01M10/0568H01M10/0525
CPCH01M10/0567H01M10/0568H01M10/0525H01M2300/0028Y02E60/10
Inventor 李轶张为民王仁和余乐
Owner ENVISION DYNAMICS TECH (JIANGSU) CO LTD