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Steel-tape nickel cathode and assemblied battery

A technology of nickel electrodes and steel strips, which is applied to nickel storage batteries, alkaline storage batteries, alkaline storage battery electrodes, etc., can solve the problems of high cycle charge and discharge times, low production cost of bonded electrodes, etc., and achieves high cycle charge and discharge times. , The effect of low production cost and long working life

Active Publication Date: 2007-08-29
GUANGZHOU GREAT POWER ENERGY & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to avoid the deficiencies in the prior art and provide a battery with simple electrode preparation process and high capacity, low production cost of bonded electrodes, many cycle charging and discharging times, good reversibility of electrode reaction, and effective To prevent the active material on the electrode from gradually falling off during the charging and discharging process, the problem of short working life of the battery is caused, and the working life of the battery is extended

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Mix 82 parts by weight of nickel hydroxide, 5 parts by weight of cobaltous oxide, 5 parts by weight of graphite, 2 parts by weight of titanium dioxide, and 5 parts by weight of cadmium oxide to form positive electrode dry powder. 0.35% sodium carboxymethyl cellulose by weight of positive electrode dry powder, 0.35% sodium polyacrylate by weight of positive electrode dry powder, and 0.6% acrylic acid vinyl alcohol copolymer by weight of positive electrode dry powder are added with water to form a hydrophilic binder. 2% polytetrafluoroethylene emulsion by weight of positive electrode dry powder was used as hydrophobic binder. Stir the positive electrode dry powder, hydrophilic binder, and hydrophobic binder to obtain a uniform slurry, and then apply the slurry to both sides of the nickel-plated burr steel strip. The thickness is controlled at 0.75mm after drying and rolling, and punched into 60mm × 39.5mm positive plate, and spot-welded the upper lug, cadmium negative ele...

Embodiment 2

[0014] Mix 82 parts by weight of nickel hydroxide, 3 parts by weight of cobaltous oxide, 8 parts by weight of graphite, 2 parts by weight of titanium dioxide, and 5 parts by weight of cadmium oxide to form positive electrode dry powder. 0.35% sodium carboxymethyl cellulose by weight of positive electrode dry powder, 0.35% sodium polyacrylate by weight of positive electrode dry powder, and 0.6% acrylic acid vinyl alcohol copolymer by weight of positive electrode dry powder are added with water to form a hydrophilic binder. 2% polytetrafluoroethylene emulsion by weight of positive electrode dry powder was used as hydrophobic binder. Stir the positive electrode dry powder, hydrophilic binder, and hydrophobic binder to obtain a uniform slurry, and then apply the slurry to both sides of the nickel-plated burr steel strip. The thickness is controlled at 0.75mm after drying and rolling, and punched into 60mm × 39.5mm positive plate, and spot welding the upper tab, cadmium negative el...

Embodiment 3

[0016] 82 parts by weight of nickel hydroxide, 3 parts by weight of cobaltous oxide, 8 parts by weight of graphite and 2 parts by weight of titanium dioxide were uniformly mixed, and 5 parts by weight of cadmium oxide were mixed together to form a positive electrode dry powder. 0.7% of sodium carboxymethyl cellulose and 0.6% of acrylic acid vinyl alcohol copolymer in weight of positive dry powder are added with water to form a hydrophilic binder. 2% polytetrafluoroethylene emulsion by weight of positive electrode dry powder was used as hydrophobic binder. Stir the positive electrode dry powder, hydrophilic binder, and hydrophobic binder to obtain a uniform slurry, and then apply the slurry to both sides of the nickel-plated perforated steel strip. The thickness is controlled at 0.75mm after dry rolling, and punched into 60mm × 39.5mm positive plate, and spot welding the upper lug, cadmium negative electrode, and diaphragm to assemble an alkaline nickel-cadmium battery. The ele...

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Abstract

This invention relates to NiH basic storage battery. This invented bonded basic battery with Ni as the positive is matched by a steel tape Ni electrode and Ge negative, in which, the steel tape is coated by a slurry mixed by NiOH material, conducting agent and adhesive agent to be dried and pressed to form a steel tape Ni electrode, the hydrophobic adhesive is Teflon latex, the hydrophilic adhesive is a copolymer mixed by cellulose high polymer, polyacrylic acid, its Na salt, polymethacrylic acid, its Na salt and acrylic acid vinyl alcohol.

Description

technical field [0001] The steel strip nickel electrode and the assembled battery of the invention belong to the field of batteries, in particular to nickel-hydrogen alkaline storage batteries. Background technique [0002] Cylindrical sealed nickel-cadmium alkaline batteries have the advantages of high specific power, long service life, small size, light weight, and high performance-price ratio. They are widely used in communication tools, electric tools and various instruments, and once dominated rechargeable batteries. market. [0003] There are currently two types of nickel electrodes used in nickel-cadmium batteries, sintered electrodes and non-sintered electrodes. For the manufacture of sintered nickel electrodes, a mixture of binder and metal nickel powder is first coated on the nickel substrate and then sintered to obtain a porous nickel substrate. The substrate is impregnated with nickel salt solution and alkalized. , repeated many times to make sintered nickel el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/32H01M4/26H01M10/30
CPCY02E60/124Y02E60/10
Inventor 薛建军夏信德潘群生候宪鲁
Owner GUANGZHOU GREAT POWER ENERGY & TECH CO LTD