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Preparation method of polymer lithium ion battery

A lithium-ion battery and polymer technology, applied in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problems of cobalt resource shortage, high price, toxic promotion and use, etc., and achieve ultra-low cost, small discharge capacity, The effect of structural stability

Active Publication Date: 2010-03-31
ZHENGZHOU BAK BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium cobaltate has been commercialized as a secondary battery as the positive electrode material, but its popularization and use is restricted due to the shortage of cobalt resources, high price and toxicity

Method used

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  • Preparation method of polymer lithium ion battery
  • Preparation method of polymer lithium ion battery
  • Preparation method of polymer lithium ion battery

Examples

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Embodiment 1

[0017] The preparation method of the polymer lithium ion battery of this example is characterized in that the polymer lithium ion battery is composed of a positive electrode system, a negative electrode system and a gel polymer electrolyte, wherein the positive electrode system is: lithium manganate and nickel cobalt manganic acid Lithium (LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 ), the weight ratio range of the two is 1:1; the negative electrode system: natural graphite and artificial graphite, the weight ratio range of the two is 1:1; the gel polymer electrolyte: it is composed of a monomer, an initiator, an organic electrolyte, The mass ratio of each component is: monomer: initiator: organic electrolyte = 1:0.03:18.6, the monomer is methyl acrylate (CH 2 =CH-COOCH 3 ) and tetraethylene alcohol diacrylate (mass ratio: 1:0.85), the initiator is dibenzoyl peroxide, the organic electrolyte is: EC / EMC / DEC (volume ratio: 1:0.2:1.4), lithium salt Concentration (LiPF 6 ): 1mol / L. Battery ...

Embodiment 2

[0045] The preparation method of the polymer lithium ion battery of this example is characterized in that the polymer lithium ion battery is composed of a positive electrode system, a negative electrode system and a gel polymer electrolyte, wherein the positive electrode system is: lithium manganate and nickel cobalt manganic acid Lithium (LiNi 1 / 5 co 2 / 5 mn 2 / 5 o 2 ), the weight ratio range of the two is 1:2; the negative electrode system: natural graphite and artificial graphite, the weight ratio range of the two is 1:2.5; gel polymer electrolyte: it is composed of a monomer, an initiator, an organic electrolyte, The mass ratio of each component is: monomer: initiator: organic electrolyte = 1: 0.041: 19.6, the monomer is methyl acrylate (CH 2 =CH-COOCH 3 ) and tetraethylene alcohol diacrylate (mass ratio: 1:0.98), the initiator is dibenzoyl peroxide, the organic electrolyte is: EC / EMC / DEC (volume ratio: 1:0.8:2.1), lithium salt Concentration (LiPF 6 ): 1.18mol / L. Batt...

Embodiment 3

[0053] The preparation method of the polymer lithium ion battery of this example is characterized in that the polymer lithium ion battery is composed of a positive electrode system, a negative electrode system and a gel polymer electrolyte, wherein the positive electrode system is: lithium manganate and nickel cobalt manganic acid Lithium (LiNi 2 / 5 co 1 / 5 mn 2 / 5 o 2 ), the weight ratio range of the two is 1:4; the negative electrode system: natural graphite and artificial graphite, the weight ratio range of the two is 1:3.76; the gel polymer electrolyte: it is composed of a monomer, an initiator, an organic electrolyte, The mass ratio of each component is: monomer: initiator: organic electrolyte = 1:0.05:20.6, the monomer is methyl acrylate (CH 2 =CH-COOCH 3 ) and tetraethylene alcohol diacrylate (mass ratio: 1:1.22), the initiator is dibenzoyl peroxide, the organic electrolyte is: EC / EMC / DEC (volume ratio: 1:1:3), lithium salt Concentration (LiPF 6 ): 1.25mol / L. Batter...

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Abstract

The invention belongs to a preparation method of a polymer lithium ion battery in the technical field of battery product development, which is characterized in that the polymer lithium ion battery comprises an anode system, a cathode system and gel polymer electrolyte, wherein, the anode system adopts lithium manganate and lithium nickelate cobaltate manganate in a weight ratio of 1:1-4, the cathode system adopts natural graphite and / or artificial graphite in a weight ratio of 0-100:100-0, the gel polymer electrolyte comprises a monomer / an initiator / organic electrolyte, the monomer is methyl acrylate / tetraethenol diacrylate, the initiator is a radical initiator, the organic electrolyte is ethylene carbonate / methyl ethyl carbonate / diethyl carbonate. The product prepared by the invention canmeet the requirements of the battery on capacity and overcharge protection, is excellent in high temperature storage and cyclicity and is widely applied to such electronic equipment as MP3, MP4, portable DVD and the like.

Description

Technical field: [0001] The invention belongs to the technical field of battery product development, and in particular relates to a preparation method of a polymer lithium ion battery. Background technique: [0002] In the prior art, the polymer lithium-ion battery (PLIB) is a third-generation new green and environmentally friendly lithium-ion battery developed on the basis of the original steel shell and aluminum shell batteries. It is thinner, lighter, safer, and has a longer service life. Longer, good low temperature performance and low expansion rate, so it is widely used in mobile phones, MP3, MP4, P-DVD, PDA, digital products, notebook computers, Bluetooth products, smart cards, cameras, miner's lamps, electric bicycles and military With the continuous expansion of application fields, polymer lithium-ion batteries will develop rapidly, and the market potential is huge. [0003] Lithium cobaltate has been commercialized as a secondary battery as the positive electrode ...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M4/505H01M4/525H01M10/058
CPCY02E60/12Y02E60/122Y02E60/10Y02P70/50
Inventor 高威黄东陈向魁高宁泽
Owner ZHENGZHOU BAK BATTERY CO LTD
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