Corrosion-resistant diaphragm material for lithium ion battery

A technology for lithium ion batteries and separator materials, applied in the field of lithium ion battery separator materials, can solve problems such as poor corrosion resistance and affect the quality of lithium ion batteries, and achieve the effect of improving quality and excellent chemical corrosion resistance

Inactive Publication Date: 2016-11-23
无锡市宝来电池有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing battery diaphragm materials have poor corrosion resista...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: A kind of corrosion-resistant lithium-ion battery separator material, comprises the raw material of following parts by weight: polypropylene 75 parts, magnesium hydroxide 5 parts, polytrimethylene adipate 8 parts, styrene 6 parts, tomato red 4 parts of plain element, 21 parts of silica powder, 16 parts of tricresyl phosphate, 1 part of 2,5-di-tert-butylhydroquinone, 17 parts of ethylene-1-octene copolymer, triallyl isocyanuric acid 5 parts of ester.

Embodiment 2

[0010] Embodiment 2: A kind of corrosion-resistant lithium-ion battery separator material, comprises the raw material of following parts by weight: 65 parts of polypropylene, 3 parts of magnesium hydroxide, 5 parts of polytrimethylene adipate, 5 parts of styrene, tomato red 1 part of plain element, 15 parts of silica powder, 12 parts of tricresyl phosphate, 0.5 part of 2,5-di-tert-butylhydroquinone, 12 parts of ethylene-1-octene copolymer, triallyl isocyanuric acid 3 parts of ester.

Embodiment 3

[0011] Embodiment 3: A kind of corrosion-resistant lithium-ion battery separator material, comprises the raw material of following parts by weight: polypropylene 85 parts, magnesium hydroxide 7 parts, polytrimethylene adipate 12 parts, styrene 7 parts, tomato red 6 parts of plain powder, 26 parts of silica powder, 18 parts of tricresyl phosphate, 1.5 parts of 2,5-di-tert-butyl hydroquinone, 22 parts of ethylene-1-octene copolymer, triallyl isocyanuric acid 6 parts of ester.

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PUM

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Abstract

Disclosed is a corrosion-resistant diaphragm material for a lithium ion battery. The corrosion-resistant diaphragm material comprises the following raw materials in parts by weight: 65-85 parts of polypropylene, 3-7 parts of magnesium hydroxide, 5-12 parts of poly(1,2-propylene glycol adipate), 5-7 parts of styrene, 1-6 parts of lycopene, 15-26 parts of silica powder, 12-18 parts of tricresyl phosphate, 0.5-1.5 parts of 2, 5-ditert-butylhydroquinone, 12-22 parts of ethylene-1-octene copolymer and 3-6 parts of triallyl isocyanurate. By adoption of the corrosion-resistant diaphragm material for the lithium ion battery provided by the invention, the diaphragm with excellent chemical corrosion resistance, mechanical strength and thermal stability can be obtained by experiments of multiple times, and the quality of the battery can be improved due to the diaphragm.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a corrosion-resistant lithium-ion battery diaphragm material. Background technique [0002] In the structure of lithium batteries, the separator is one of the key inner components. The performance of the separator determines the interface structure and internal resistance of the battery, which directly affects the capacity, cycle and safety performance of the battery. A separator with excellent performance plays an important role in improving the overall performance of the battery. The main function of the diaphragm is to separate the positive and negative electrodes of the battery, prevent the two electrodes from contacting and short circuit, and also have the function of allowing electrolyte ions to pass through. The existing battery diaphragm materials have poor corrosion resistance, which affects the quality of lithium-ion batteries to a certain extent. Contents of the i...

Claims

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Application Information

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IPC IPC(8): H01M2/16H01M10/0525
CPCH01M10/0525H01M50/446Y02E60/10
Inventor 陈一平
Owner 无锡市宝来电池有限公司
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