Electrolyte for lithium manganese battery

A technology of lithium manganate battery and electrolyte, which is applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of large improvement space of electrolyte, achieve the effect of improving cycle life and high temperature performance, and reducing corrosion and damage

Inactive Publication Date: 2010-07-14
JIUJIANG TINCI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, there is still a lot of room for improvement in the electrolyte for lithium manganate batteries.

Method used

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  • Electrolyte for lithium manganese battery
  • Electrolyte for lithium manganese battery
  • Electrolyte for lithium manganese battery

Examples

Experimental program
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Effect test

Embodiment 1

[0061] lithium salt LiPF 6 Dissolved in the mixed solvent of ethylene carbonate / propylene carbonate / methyl ethyl carbonate / diethyl carbonate (mass ratio is 35 / 5 / 10 / 50) to obtain a solution, wherein LiPF 6 The concentration is 1mol / L, and in this solution, 1% of vinylene carbonate, 1% of 1-propene-1,3-sultone, 0.1% of ethanolamine and 0.1% of F(CF 2 CF 2 ) 4 (CH 2 CH 2 O) 10 H, to obtain the electrolyte solution of the present invention.

Embodiment 2

[0063] lithium salt LiPF 6 Dissolved in the mixed solvent of ethylene carbonate / dimethyl carbonate / ethyl methyl carbonate / diethyl carbonate (mass ratio is 35 / 10 / 10 / 45) to obtain a solution, wherein LiPF 6 The concentration of the solution is 1mol / L, and in this solution, 1% of vinylene carbonate, 0.5% of 1-propene-1,3-sultone, 0.15% of ethylamine and 0.15% of H(CF 2 CF 2 ) 8 CH 2 O(CH 2 CH 2 O) 20 H, to obtain the electrolyte solution of the present invention.

Embodiment 3

[0065] lithium salt LiPF 6 Dissolved in the mixed solvent of ethylene carbonate / dimethyl carbonate / methyl propyl carbonate / diethyl carbonate (mass ratio is 30 / 10 / 20 / 40) to obtain a solution, wherein LiPF 6 The concentration is 0.9mol / L, and 2% ethylene carbonate, 1.5% 1-propene-1,3-sultone, 0.08% ethylamine and 1% F (CF 2 CF 2 ) 5 O(CH 2 CH 2 O) 22 (CF 2 CF 2 ) 5 F, obtain the electrolyte solution of the present invention.

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Abstract

The invention discloses an electrolyte for a lithium manganese battery, which comprises a non-aqueous organic solvent, lithium salt, a film forming additive, an anti-overcharge additive and a stabilizing additive, and also comprises the following components by weight percent: 0.1-5% of unsaturated sultone as a high temperature additive and 0.01-1% of fluorocarbon surfactant. Based on the reasonable deign of each component, the electrolyte is added with the novel high-temperature additive and the fluorocarbon surfactant, so that the lithium manganese battery using the electrolyte has excellent cycle life and high temperature properties.

Description

technical field [0001] The invention relates to an electrolyte solution for a lithium ion battery, in particular to an electrolyte solution for a lithium manganate battery. Background technique [0002] Lithium-ion batteries are currently widely used in mobile communications, Digital cameras, MP3 and other portable electronic products, and gradually applied in national defense and military. In recent years, with the global emphasis on environmental issues and the rapid development of new energy vehicles, lithium-ion batteries are considered to be the most promising automotive power batteries. [0003] The commonly used cathode material for lithium-ion batteries is lithium cobalt oxide. With the rise and instability of cobalt prices, people are actively seeking to replace lithium cobalt oxide cathode materials. Subsequently, lithium manganese oxide, lithium iron phosphate, nickel manganese cobalt aluminum and other elements The binary or multi-component compounds have been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/056
CPCY02E60/12Y02E60/10
Inventor 周邵云刘建生李永坤张利萍张若昕
Owner JIUJIANG TINCI ADVANCED MATERIALS CO LTD
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