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Lithium ion battery anode water-based formula and processing technology

A lithium-ion battery and processing technology, which is applied to battery electrodes, non-aqueous electrolyte battery electrodes, circuits, etc., can solve the problems of low equipment utilization, high production cost, and long process time, so as to reduce production costs and improve equipment. The effect of utilization

Inactive Publication Date: 2015-06-24
河南新太行电源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the lithium-ion battery negative electrode batching process takes a long time, generally about 10 hours, the production cost is high, and the equipment utilization rate is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A lithium-ion battery negative electrode water-based formulation, the ratio of raw materials by weight is: binder: 1.0 parts by weight, thickener: 0.5 parts by weight, negative electrode active material: 45.0 parts by weight, conductive agent: 0.5 parts by weight, solvent: 46.0 parts by weight. The thickener is sodium carboxymethyl cellulose; the binder includes styrene-butadiene rubber; the conductive agent is conductive carbon black; the negative active material is natural graphite; and the solvent includes deionized water.

[0012] ①Surface infiltration: Add the above-mentioned selected substances into the mixing tank, and stir at a low speed for 10 minutes; ②Mother liquor configuration: Add all the solvents to the slurry in the process ①, stir at a low speed for 10 minutes, and scrape the stirring paddle and the mixing tank after stirring wall, then stir at high speed for 60 minutes; ③Disperse the main material: add all the negative active materials in process ②, st...

Embodiment 2

[0015] A lithium-ion battery negative electrode water-based formula, characterized in that: the weight ratio of raw materials is: binder: 1.5 parts by weight, thickener: 1.0 parts by weight, negative electrode active material: 50.0 parts by weight, conductive agent: 1.0 parts by weight Parts, solvent: 55.0 parts by weight. The thickener is sodium carboxymethyl cellulose; the binder is polyacrylonitrile copolymer; the conductive agent is conductive graphite; the negative electrode active material includes lithium titanate; the solvent includes deionized water .

[0016] ①Surface infiltration: Add the above-mentioned selected substances into the mixing tank, and stir at a low speed for 15 minutes; ②Mother liquor configuration: Add all the solvents to the slurry in the process ①, stir at a low speed for 15 minutes, and scrape the stirring paddle and the mixing tank after stirring wall, then stir at high speed for 65 minutes; ③Disperse the main material: add all the negative elec...

Embodiment 3

[0019] A lithium-ion battery negative electrode water-based formula, the ratio of raw materials by weight is: binder: 1.2 parts by weight, thickener: 0.7 parts by weight, negative electrode active material: 47.0 parts by weight, conductive agent: 0.7 parts by weight, solvent: 48.0 parts by weight. The thickener includes sodium carboxymethyl cellulose; the binder includes styrene-butadiene rubber; the conductive agent is carbon nanotubes; the negative active material includes composite graphite; and the solvent includes deionized water.

[0020] ①Surface infiltration: Add the above-mentioned selected substances into the mixing tank, and stir at a low speed for 30 minutes; ②Mother liquor configuration: Add all the solvents to the slurry in the process ①, stir at a low speed for 20 minutes, and scrape the stirring paddle and the mixing tank after stirring wall, then stir at high speed for 70 minutes; ③Disperse the main material: add all the negative electrode active materials in ...

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Abstract

The invention relates to a lithium ion battery anode water-based formula and a processing technology, and aims at providing a lithium ion battery anode water-based formula and a processing technology, which are short in material preparing time, high in equipment utilization rate and low in manufacture cost. According to the key point of the technical scheme, the lithium ion battery anode comprises the following raw materials in parts by weight; 1.0 to 1.5 parts of an adhesive, 0.5 to 1.0 part of a thickening agent, 0.0 to 1.5 parts of a defoaming agent, 0.0 to 0.5 part of a surface tension removal agent, 45.0 to 50.0 part of anode active substance, 0.5 to 1.0 part of a conducting agent and 46.0 to 55.0 parts of a solvent. By adopting the lithium ion battery anode water-based formula and the processing technology, the problems of the existing lithium ion battery anode that the material preparing time is long, the equipment utilization rate is low and the production cost is high can be solved, the material preparing time of the anode can be shortened to be less than 5 hours, the equipment utilization rate is increased, and the production cost is reduced.

Description

Technical field: [0001] The invention relates to the production of lithium-ion battery ingredients, in particular to a lithium-ion battery negative-electrode water-based formulation and processing technology involving surface infiltration treatment and mother liquor treatment of lithium-ion battery negative-electrode materials. Background technique: [0002] Lithium-ion batteries belong to the product manufacturing industry with many processing procedures and complex processes. The process capability of the manufacturing process has a particularly important impact on the consistency of product performance. The batching process is a key process and a special process in the lithium battery manufacturing process, and its process manufacturing level directly affects product performance, quality consistency and yield. [0003] An excellent compounding method can ensure the dispersion effectiveness of the negative electrode active material, improve the ability of the negative ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M4/139
CPCY02E60/10
Inventor 靳文超尹亮王晓静程迪
Owner 河南新太行电源股份有限公司
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