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Binder for lead-carbon battery

A lead-carbon battery and binder technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve problems such as the inability to effectively improve the bonding of lead-carbon materials and the poor bonding effect of rosin, so as to prevent falling off, The effect of improving the flow capacity, the method is simple and easy

Inactive Publication Date: 2011-09-14
JIANGSU AOXIN TECH DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patented technology uses rosin as a binder. Due to the poor bonding effect of rosin, it cannot effectively improve the effective adhesion of lead-carbon materials when mixing pastes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 100 kg of lead powder, 0.2 kg of humic acid, 1 kg of barium sulfate, 0.4 kg of acetylene black, 0.2 kg of lignin, 0.1 kg of short fiber, 8 kg of sulfuric acid of 1.4g / cm3, 10.5 kg of pure water, and 5 kg of capacitive carbon material kg, 6 kg of binder. The binder components include: 3.5 kg of polyvinyl alcohol, 1.5 kg of PAA, 0.5 kg of ethylene-vinyl acetate (EVA) copolymer emulsion with a solid content of 40-55%, and 0.5 kg of LA132.

[0027] Dissolve 3.5 kg of polyvinyl alcohol, 1.5 kg of PAA, 0.5 kg of ethylene-vinyl acetate (EVA) copolymer emulsion, and 0.5 kg of LA132 in pure water, and stir them with a glass rod to disperse them evenly. Dissolve by warming slightly. Then pour the lead powder, capacitive activated carbon, additives and other materials into the cleaned paste machine, and dry stir for 5 minutes; then add the pure water dissolved in the binder quickly, and stir for 8 minutes; mix 1.4g / cm3 Slowly add dilute sulfuric acid for 10-12 minutes; stop...

Embodiment 2

[0030] The implementation steps are the same as the implementation case 1, wherein the capacitive carbon material is 10 kg, and the binder is 8 kg. The binder components include: 4.8 kg of polyvinyl alcohol, 3.2 kg of PAA. .

Embodiment 3

[0032] The implementation steps are the same as the implementation case 1, wherein the capacitive carbon material is 2 kg, and the binder is 3 kg. The binder components include: 2.6 kg of polyvinyl alcohol, 0.4 kg of ethylene-vinyl acetate (EVA) copolymer emulsion.

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Abstract

The invention discloses a binder for a lead-carbon battery. The binder is prepared by mixing polyvinyl alcohol together with one or more types of polyacrylic acid (PAA), ethylene-vinyl acetate (EVA) copolymer emulsion with solid content of 40-55%, and LA132 (polyacrylic terpolymer emulsion as effectively component). The content of the polyvinyl alcohol is 50-95% and the contents of the PAA, the ethylene-vinyl acetate copolymer emulsion and the LA132 respectively are 5-50%. The binder solves the difficulty in the co-pasting of the lead-carbon battery; by the addition of the binder, the effective binding of a negative electrode plate lead-carbon material can be realized, the binding force of lead paste and a plate grid is increased, and the strength of the electrode plate is ensured, therefore the properties of the storage battery is improved and the cycle life of the storage battery is prolonged; and the preparation method of the binder is simple, convenient and feasible, extra load of an enterprise for improving production equipment is not increased and the binder is suitable to production and application in a large scale.

Description

technical field [0001] The invention relates to a binder, in particular to a binder for lead-carbon batteries, belonging to the field of electrochemical energy storage devices. Background technique [0002] Supercapacitor is a new type of energy storage and conversion device developed in recent years. It uses the electric double layer on the interface between the electrode and the electrolyte or undergoes a fast and reversible redox reaction (pseudocapacitive characteristics) to store energy. The emergence of supercapacitors makes the limit capacity of capacitors suddenly rise by 3-4 orders of magnitude, reaching a high capacity of more than thousands of F / g. Compared with traditional secondary batteries, it has high specific power, good high-current fast charging characteristics, long service life, and no pollution. Therefore, electrochemical supercapacitors have broad application prospects in mobile communications, information technology, electric vehicles, aerospace and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L33/02C08L23/08C08L31/04C08L33/04H01M4/62
CPCY02E60/12Y02E60/10
Inventor 王富茜付定华陈红雨
Owner JIANGSU AOXIN TECH DEV
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