Method for manufacturing plastic electrode plate of lithium ion secondary battery

A secondary battery and lithium-ion technology, applied in the direction of electrode manufacturing, electrode carrier/collector, etc., can solve the problems of difficult molding processing, limited wide application, and failure to realize large-scale industrialization, and achieve high conductivity and improved toughness Effect

Inactive Publication Date: 2008-02-27
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the particularity of its molecular chain, conductive polyaniline is insoluble and infusible, and it is difficult to carry out molding processing, which limits its wide application in technology, and has not yet achieved large-scale industrialization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] After the sample is dried, take polyethylene with the ratio of 85,10,5, carbon black, plasticizer, its total mass is about 40 grams, then, with torque rheological mixing about 15 minutes discharging (processing Conditions: temperature 160°C, rotating speed 60r / min, 60ml mixer), then, under the conditions of pressure 10Mpa and temperature 140°C, press them into 180mm×180mm×2mm samples with a flat vulcanizer respectively (preheating for 5min, hot pressing 5min), cooled naturally to obtain the finished product.

[0020] The obtained sample was subjected to a mechanical property test, and its tensile strength was 46 MPa, and its elongation at break was 36%; and an electrical property test was performed, and its electrical resistance was 4300 KO.

Embodiment 2

[0022] After the sample is dried, take polyethylene with the ratio of 80, 15, 5, carbon black, plasticizer, its total mass is about 40 grams, then, with torque rheological mixing about 15 minutes discharging (processing Conditions: temperature 160°C, rotating speed 60r / min, 60ml mixer), then, under the conditions of pressure 10Mpa and temperature 140°C, press them into 180mm×180mm×2mm samples with a flat vulcanizer respectively (preheating for 5min, hot pressing 5min), cooled naturally to obtain the finished product.

[0023] The obtained sample was subjected to a mechanical property test, and its tensile strength was 63 MPa, and its elongation at break was 13%; and an electrical property test was performed, and its electrical resistance was 28.80 KO.

Embodiment 3

[0025] After the sample is dried, take polyethylene with the ratio of 75, 20, 5, carbon black, plasticizer, its total mass is about 40 grams, then, with torque rheological mixing about 15 minutes discharging (processing Conditions: temperature 160°C, rotating speed 60r / min, 60ml mixer), then, under the conditions of pressure 10Mpa and temperature 140°C, press them into 180mm×180mm×2mm samples with a flat vulcanizer respectively (preheating for 5min, hot pressing 5min), cooled naturally to obtain the finished product.

[0026] The obtained sample was subjected to a mechanical property test, and its tensile strength was 59 MPa, and its elongation at break was 6%; and an electrical property test was performed, and its electrical resistance was 5.13 KO.

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Abstract

This inventive lithium ion plastic battery electrode plate is made of polyethylene as base material and polyaniline and carbon-black as conductive fillings. The production procedures are: (a), drying raw materials, weighing polyethylene, carbon-black and plastifier with the total weight of 40g, proceeding torque deformation blending, being pressed by plat-vulcanizer and natural cooling to obtain product; (b), carbon-black: polyaniline=80-40%: 20-60%, being mixed, weighing the mixture 80g, being mixed, processed, natural cooling to obtain product. The inventive electrode plate has high electroconductivity, high toughness, suitable for production of secondary lithium ion battery.

Description

technical field [0001] The invention relates to a preparation method of an electrode material, in particular to a preparation method of a plastic electrode plate with conductive polymers and inorganic conductive materials as fillers. Background technique [0002] Polyaniline was discovered by H. Letheby as early as 1862, but it has been studied and used as a dye for more than one hundred years since then. However, since 1983, MacDiarmid et al first synthesized a higher conductivity (5 ~ 10S cm -1 ) polyaniline powder, polyaniline has been re-examined as a conductive material. The theoretical research related to polyaniline mainly focuses on various influencing factors in the synthesis process, the properties, characterization and electromagnetic chemical properties of the synthesized products, as well as the doping and conductive mechanism of polyaniline. As a new type of organic polymer conductive material, polyaniline has the incomparable advantages of metals, its molecu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/66B29C67/24
CPCY02E60/12Y02E60/10
Inventor 赵立群叶会见田野
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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