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Lithium battery electrode adhesive and preparation method thereof

An adhesive, lithium battery technology, used in battery electrodes, lithium batteries, non-aqueous electrolyte batteries, etc., can solve the problems of unstable discharge, low electrolysis resistance, short service life, etc., and improve the electrolysis resistance and adhesion performance. Excellent, good protective effect

Active Publication Date: 2018-11-16
NINGBO NENGZHIGUANG NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the adhesive has a good waterproof effect, its discharge is unstable, its electrolytic resistance is low, and its service life is short.

Method used

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  • Lithium battery electrode adhesive and preparation method thereof
  • Lithium battery electrode adhesive and preparation method thereof
  • Lithium battery electrode adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A lithium battery electrode adhesive, comprising the following raw materials in parts by weight: 700g of methyl acrylate, 60g of acrylic acid monomer, 250g of acrylate polyol, 3g of cyclohexanone 1,2-propanediol ketal, 1g of carbon nanotube, azo Diisoheptanonitrile 0.05g. The diameter of the carbon nanotube is 5-12nm, the average diameter is 8nm, and the aspect ratio is 1200-1400.

[0022] The preparation method of the above-mentioned lithium battery electrode adhesive is carried out according to the following steps:

[0023] (1) According to the weight fraction, take 700g of methyl acrylate, 60g of acrylic acid monomer, 250g of acrylate polyol, and 0.05g of azobisisoheptanonitrile, mix them in a container, and stir for 15 minutes;

[0024] (2) Heating to 80°C, and continuously stirring the container, and reacting for 5 hours;

[0025] (3) Stop heating, continue to stir and cool to room temperature, add 3 g of cyclohexanone 1,2-propanediol ketal, 1 g of carbon nanotub...

Embodiment 2

[0027] A lithium battery electrode adhesive, comprising the following raw materials in parts by weight: butyl acrylate 600g, acrylic acid monomer 40g, acrylate polyol 200g, cyclohexanone 1,2-propanediol ketal 1g, carbon nanotube 0.5g, even Azodiisoheptanonitrile 0.01g. The diameter of the carbon nanotube is 5-12nm, the average diameter is 8nm, and the aspect ratio is 800-1000.

[0028] The preparation method of the above-mentioned lithium battery electrode adhesive is carried out according to the following steps:

[0029] (1) According to the weight fraction, take 600g of butyl acrylate, 40g of acrylic acid monomer, 200g of acrylate polyol, and 0.01g of azobisisoheptanonitrile, mix them in the container, and stir for 10min;

[0030] (2) Heating to 70°C, and continuously stirring the container, reacting for 4 hours;

[0031] (3) Stop heating, continue to stir and cool to room temperature, add 1 g of cyclohexanone 1,2-propanediol ketal, 0.5 g of carbon nanotubes, and stir for ...

Embodiment 3

[0033] A lithium battery electrode adhesive, comprising the following raw materials in parts by weight: 800g of isobutyl acrylate, 80g of acrylic acid monomer, 300g of acrylate polyol, 5g of cyclohexanone 1,2-propanediol ketal, 3g of carbon nanotubes, Azodiisoheptanonitrile 0.1 g. The diameter of the carbon nanotube is 5-12nm, the average diameter is 8nm, and the aspect ratio is 1500-2000.

[0034] The preparation method of the above-mentioned lithium battery electrode adhesive is carried out according to the following steps:

[0035] (1) According to the weight fraction, take 800g of isobutyl acrylate, 80g of acrylic acid monomer, 300g of acrylate polyol, and 0.1g of azobisisoheptanonitrile, mix them in the container, and stir for 20min;

[0036] (2) Heating to 85°C, and continuously stirring the container, and reacting for 6 hours;

[0037] (3) Stop heating, continue to stir and cool to room temperature, add 5 g of cyclohexanone 1,2-propanediol ketal, 3 g of carbon nanotub...

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Abstract

The invention discloses a lithium battery electrode adhesive and a preparation method thereof. The lithium battery electrode adhesive is prepared from the following raw materials in parts by weight: 600-800 parts of acrylic ester, 40-80 parts of acrylate monomer, 200-300 parts of acrylic ester polyhydric alcohol, 1-5 parts of cyclohexanone 1,2-propylene glycol ketal, 0.5-3 parts of carbon nanotubeand 0.01-0.1 part of azo-bis-iso-heptonitrile. The lithium battery electrode adhesive prepared by the preparation method has a good protection function on the lithium battery electrode, can be dust-proof and water-proof, does not crack at low temperature, and has excellent adhesive property. The acrylic ester polyhydric alcohol and the carbon nanotube are added to be favorable for improving the discharging stability of the lithium battery, improving electrolysis resistance and prolonging the service life of the lithium battery.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries for electric vehicles, and in particular relates to a lithium battery electrode adhesive and a preparation method thereof. Background technique [0002] With the strengthening of people's awareness of environmental protection and the encouragement of the country, electric vehicles have received more and more attention. The main source of power for electric vehicles is batteries, generally lithium batteries or lithium iron phosphate batteries. The energy density of lithium iron phosphate batteries is low. It is relatively bulky and has been gradually eliminated by the market. [0003] Lithium batteries have high energy density, but there are also many defects. The discharge of lithium batteries is not as stable as lithium iron phosphate batteries, and the service life is short. Lithium batteries use a lot of adhesives to bond and fix them in the process of processing, and water vapor ente...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M10/052
CPCH01M4/621H01M10/052Y02E60/10
Inventor 张春华
Owner NINGBO NENGZHIGUANG NEW MATERIALS TECH
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