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Water-based conducting resin for lithium ion battery

A technology of lithium-ion batteries and conductive adhesives, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of increasing battery costs, affecting the number of charge and discharge, and affecting the insertion and extraction of lithium ions, so as to achieve easy insertion and extraction, The effect of high charge and discharge times

Active Publication Date: 2012-10-31
和盛包装科技(海宁)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

NMP is not only expensive and increases the cost of the battery, but also has certain toxicity. Heating and volatilization will cause environmental pollution. At the same time, it cannot make the active material distribution reach an ideal state, which affects the insertion and extraction of lithium ions from the positive electrode material and affects the charge and discharge. the number of times

Method used

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  • Water-based conducting resin for lithium ion battery
  • Water-based conducting resin for lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The conductive adhesive is prepared according to the following composition ratio (mass percentage content):

[0014] Octahydroxyquinoline 5%,

[0015] Graphite 37%,

[0016] Acrylic copolymer 30%,

[0017] Linseed oil 1%,

[0018] Isopropanol 5%,

[0019] KH560 2%,

[0020] Water 20%.

[0021] The preparation method is to firstly mix the liquid components in the technical formula components evenly, then add the solid components and stir evenly, then grind on a grinder, and finally pack.

Embodiment 2

[0024] The conductive adhesive is prepared according to the following composition ratio (mass percentage content):

[0025] Octahydroxyquinoline 5%,

[0026] Graphite 25%,

[0027] Acrylic copolymer 30%,

[0028] Linseed oil 3%,

[0029] Isopropanol 12%,

[0030] KH560 5%,

[0031] Water 20%.

[0032] The preparation method is the same as in Example 1.

[0033] The effect of the embodiment: the sheet resistance is 45Ω, and the thickness of the adhesive layer is 5 μm.

Embodiment 3

[0035] The conductive adhesive is prepared according to the following composition ratio (mass percentage content):

[0036] Octahydroxyquinoline 3%,

[0037] Graphite 45%,

[0038] Acrylic copolymer 30%,

[0039] Linseed oil 1%,

[0040] Isopropanol 5%,

[0041] KH560 1%,

[0042] Water 15%.

[0043] The preparation method is the same as in Example 1.

[0044] The effect of the embodiment: the sheet resistance is 30, and the thickness of the adhesive layer is 7 μm.

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Abstract

The invention discloses a water-based conducting resin for a lithium ion battery. The water-based conducting resin is characterized by consisting of the following components by mass percent: 1-5 percent of 8-Hydroxyquiuoline, 25-45 percent of graphite, 15-30 percent of acrylic acid copolymer, 0.5-3 percent of flax oil, 5-20 percent of isopropyl alcohol, 1-5 percent of KH560 and water, and the total mass percentage is 100. The water-based conducting resin has the advantages of environmental protection, high charge-discharge frequency, and easiness in embedding and removing ions.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and relates to a water-based conductive adhesive for lithium-ion batteries, in particular to a method for improving the number of charging and discharging points of lithium-ion battery cathode material LiMnO2, and improving and improving the corrosion resistance of electrodes adhesive. Background technique [0002] Binder is one of the key materials of lithium batteries. It has an important impact on the distribution of positive electrode and active material and battery performance. The ideal distribution state of conductive adhesive should be coated on the surface of positive electrode particles and in continuous contact with active material. , as thin as possible, so that electrons can reach the entire surface of the active particles, making it easier for lithium ions to intercalate and detach from the active particles at a small overpotential. The binder currently used is hydrophobic polyvi...

Claims

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Application Information

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IPC IPC(8): H01M4/62
CPCY02E60/12Y02E60/10
Inventor 高延敏潘华强沈海斌陶正章杨志磊
Owner 和盛包装科技(海宁)股份有限公司
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