A kind of environment-friendly polymer battery manufacturing method capable of high current charging and discharging

A polymer and lithium-ion battery technology, applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, electrodes, etc., to achieve the effects of reasonable design, good environmental protection, and long life

Active Publication Date: 2017-11-10
ZHEJIANG TIANHONG LITHIUM-ION BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there may be room for improvement in its low-temperature discharge performance

Method used

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  • A kind of environment-friendly polymer battery manufacturing method capable of high current charging and discharging
  • A kind of environment-friendly polymer battery manufacturing method capable of high current charging and discharging
  • A kind of environment-friendly polymer battery manufacturing method capable of high current charging and discharging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A polymer lithium-ion battery with a fast charge and fast discharge rate, which includes a positive electrode sheet, a negative electrode sheet, a diaphragm and an aluminum-plastic composite film; the positive electrode is composed of a positive electrode slurry and a positive electrode current collector, and the negative electrode is composed of Composition of negative electrode slurry and negative electrode current collector;

[0027] The positive electrode slurry includes: 85% ternary materials, 3% conductive graphite, 2% carbon nanotubes, 6% polyvinylidene fluoride, the dispersant is a nonionic surfactant, and the solid content of the slurry is 50% %, the slurry is evenly distributed on the upper and lower surfaces of the current collector, and the surface density of the slurry is controlled at 22mg / cm 2 ;

[0028] The negative electrode slurry includes 75% graphite, 10% graphene, 0.5% conductive graphite, 4% carbon nanotubes, 4% polyvinylidene fluoride, the disper...

Embodiment 2

[0036] A polymer lithium-ion battery with a fast charge and fast discharge rate, which includes a positive electrode sheet, a negative electrode sheet, a diaphragm and an aluminum-plastic composite film; the positive electrode is composed of a positive electrode slurry and a positive electrode current collector, and the negative electrode is composed of Composition of negative electrode slurry and negative electrode current collector;

[0037] The positive electrode slurry includes: 88% ternary materials, 0.5% conductive graphite, 5% carbon nanotubes, 4% polyvinylidene fluoride, the dispersant is a nonionic surfactant, and the solid content of the slurry is 55% %, the slurry is evenly distributed on the upper and lower surfaces of the current collector, and the surface density of the slurry is controlled at 18mg / cm 2 ;

[0038] The negative electrode slurry includes 80% graphite, 8% graphene, 2% conductive graphite, 2% carbon nanotubes, 6% polyvinylidene fluoride, the dispers...

Embodiment 3

[0046] A polymer lithium-ion battery with a fast charge and fast discharge rate, which includes a positive electrode sheet, a negative electrode sheet, a diaphragm and an aluminum-plastic composite film; the positive electrode is composed of a positive electrode slurry and a positive electrode current collector, and the negative electrode is composed of Composition of negative electrode slurry and negative electrode current collector;

[0047]The positive electrode slurry includes: 86% ternary materials, 2% conductive graphite, 3% carbon nanotubes, 5% polyvinylidene fluoride, the dispersant is a nonionic surfactant, and the solid content of the slurry is 51 %, the slurry is evenly distributed on the upper and lower surfaces of the current collector, and the surface density of the slurry is controlled at 21mg / cm 2 ;

[0048] The negative electrode slurry includes 76% graphite, 9% graphene, 1% conductive graphite, 3% carbon nanotubes, 5% polyvinylidene fluoride, the dispersant ...

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Abstract

The invention discloses an ultra-high rate polymer lithium ion battery capable of fast charging and fast discharging, which is characterized in that it includes a positive electrode sheet, a negative electrode sheet, a separator and an aluminum-plastic composite film; the positive electrode is composed of positive electrode slurry and positive electrode Composed of a current collector, the negative electrode is composed of a negative electrode slurry and a negative electrode current collector; the preparation method of the above-mentioned ultra-high rate polymer lithium ion battery that can be quickly charged and quickly discharged is characterized in that: the positive electrode production method: using water and binder to dissolve, stir evenly and dry; the negative electrode production method: 75%-80% graphite, 8%-10% graphene, 0.5-2% conductive graphite, 2%-4% After the carbon nanotubes are dry-mixed and ball-milled evenly, they are added to the polyvinylidene fluoride and NMP solution and stirred evenly; finally, the electrode sheet and the separator are stacked once and packaged, and 25%-30% of the total volume of the electrolyte is injected.

Description

technical field [0001] The invention relates to an environment-friendly polymer battery manufacturing method capable of high-current charge and discharge, which belongs to the field of battery manufacturing. Background technique [0002] Lithium polymer battery (Li-polymer, also known as polymer lithium battery): it is also a kind of lithium-ion battery, but compared with liquid lithium battery (Li-ion), it has high energy density, smaller size, and ultra-thin , lightweight, and high safety and other obvious advantages, is a new type of battery. In terms of shape, lithium polymer batteries have ultra-thin features, and can be made into batteries of any shape and capacity to meet the needs of various products. This type of battery can achieve a minimum thickness of up to 0.5mm. Its nominal voltage is the same as Li-ion's nominal voltage of 3.7V, and there is no memory effect. The positive and negative electrode materials used in polymer lithium-ion batteries are the same a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M10/058H01M4/04H01M4/131H01M4/133
CPCH01M4/04H01M4/131H01M4/133H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 都伟云项卫胜肖定骆峻
Owner ZHEJIANG TIANHONG LITHIUM-ION BATTERY CO LTD
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