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Cylindrical nickel-zinc cell and fabrication process thereof

A technology of nickel-zinc batteries and cylinders, which is applied in the manufacture of nickel batteries, alkaline batteries, alkaline batteries, etc. It can solve the problems of negative electrode stability, easy passivation of zinc negative electrodes, and high impurity content, and achieve deformation suppression , The effect of reducing the production cost

Active Publication Date: 2010-09-08
SHENZHEN BETTERPOWER BATTERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The negative electrode formula has a great influence on the stability of the negative electrode due to the dissolution of the zinc negative electrode, the formation of zinc dendrites, and the high content of impurities in the active material; the design of the negative electrode base material is easy to generate corrosion electrodes or the design cost is high; the design of the diaphragm makes the battery The cycle life is short; the structure design is easy to passivate the zinc negative electrode due to the uneven discharge current density, and the contact between the zinc negative electrode and the steel shell forms a corrosion battery

Method used

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  • Cylindrical nickel-zinc cell and fabrication process thereof
  • Cylindrical nickel-zinc cell and fabrication process thereof
  • Cylindrical nickel-zinc cell and fabrication process thereof

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Embodiment 1

[0033] The present invention will be further described below by taking the production of AAA500 nickel-zinc cylindrical batteries as an example.

[0034] (1) Negative electrode production:

[0035] Negative electrode formula component percentage content: 85% zinc oxide, 10% mercury-free zinc powder with indium bismuth added, 3.0% bismuth oxide, 0.1% indium oxide, 1.4% potassium fluoride and 0.5% hexadecyl trimethyl bromide Ammonium chloride, a certain amount of 0.75% sodium carboxymethylcellulose binder aqueous solution. The active material and the binder aqueous solution are mixed to form a slurry, which is made into a pole plate by the traditional slurry electrode manufacturing process, and the size of the pole plate is 38.2mm×66mm×0.33~0.36mm.

[0036] (2) Positive electrode production:

[0037] Positive electrode formula composition: 95.0% spherical nickel hydroxide, 30.0% nickel powder and 2.0% cobaltous powder, 0.80% hydroxyethyl cellulose binder aqueous solution, the ...

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Abstract

The invention discloses a cylindrical nickel-zinc cell and a fabrication process thereof. By making development and improvement in the formula of the cathode, the matrix material of the cathode, the membrane and the structural design, the invention restrains the deformation of a zinc polar plate, the growth of a zinc dendrite, the dissolution and deactivation of the zinc and the formation of a corrosion cell. Furthermore, the invention effectively reduces the fabrication cost and lays a foundation for industrialization of cylindrical nickel-zinc cells.

Description

technical field [0001] The invention relates to a cylindrical nickel-zinc battery and a manufacturing process thereof. Background technique [0002] There are certain defects in the negative electrode formula, negative electrode matrix material, diaphragm and structural design of the traditional cylindrical nickel-zinc battery. The negative electrode formula has a great influence on the stability of the negative electrode due to the dissolution of the zinc negative electrode, the formation of zinc dendrites, and the high content of impurities in the active material; the design of the negative electrode base material is easy to generate corrosion electrodes or the design cost is high; the design of the diaphragm makes the battery The cycle life is short; the structure design is easy to passivate the zinc negative electrode due to the uneven discharge current density, and the zinc negative electrode contacts with the steel shell to form a corrosion battery. . Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/30H01M10/28
CPCY02E60/124Y02E60/10Y02P70/50
Inventor 龙翔叶凯范自松
Owner SHENZHEN BETTERPOWER BATTERY
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