Alkaline zinc-manganese dioxide cell and preparation method thereof

A zinc-manganese battery, alkaline technology, applied in the field of electrochemistry, can solve the problems of zinc-nickel battery self-discharge, poor high-rate discharge performance, short battery storage period, etc., to improve diffusion and transfer, increase discharge capacity, reduce The effect of frictional resistance

Active Publication Date: 2010-11-24
ZHENGJIANG MUSTANG BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of poor high-rate discharge performance of alkaline zinc-manganese batteries in the prior art, serious self-discharge pheno...

Method used

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  • Alkaline zinc-manganese dioxide cell and preparation method thereof
  • Alkaline zinc-manganese dioxide cell and preparation method thereof
  • Alkaline zinc-manganese dioxide cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: Manufacture of Alkaline Zinc-Manganese Batteries

[0045] (1) Manufacture of positive electrode ring

[0046] 500g of electrolytic manganese dioxide, 40g of expanded graphite powder (Baotou Jingyuan) and 2.5g of polytetrafluoroethylene wax xy-300 with an average particle size of 2μm, after rapid stirring and dispersion, add 25g of potassium hydroxide electrolyte solution with a mass concentration of 38%, continue After stirring for 10 minutes, roll into tablets and granulate. The size of the positive electrode material after granulation is 20 mesh to 80 mesh particles, and the apparent specific gravity is 1.54g / ml. After ringing, the ring height of the positive electrode material of AA type (No. 5) battery is 10.5mm, the outer diameter is 13.4mm, and each battery 4 The total weight of each positive electrode ring is 10.6-10.7g.

[0047] (2) Preparation of negative electrode zinc paste

[0048] Add 100g of 468 zinc alloy powder, 0.5g of polyacrylic acid 7...

Embodiment 2

[0051] Example 2: Manufacture of Alkaline Zinc-Manganese Batteries

[0052] (1) Manufacture of positive electrode ring

[0053] 500g of electrolytic manganese dioxide, 40g of expanded graphite powder (Baotou Jingyuan) and 3g of polytetrafluoroethylene wax xy-300 with an average particle size of 0.5μm, after rapid stirring and dispersion, add 25g of potassium hydroxide electrolyte solution with a mass concentration of 45%, continue After stirring for 10 minutes, roll into tablets and granulate. The parameters of the prepared positive electrode ring are the same as those in Example 1.

[0054] (2) Preparation of negative electrode zinc paste

[0055] Add 100g of 468 zinc alloy powder, 0.5g of polyacrylic acid 720B, 0.4g of sodium polyacrylate DK500 and OBS accounting for 0.001% of the total mass of the mixture to 50g of a 40% potassium hydroxide aqueous solution containing a mass fraction of 2% ZnO, and stir After uniformity, vacuum degassing to make zinc paste, which is us...

Embodiment 3

[0058] Example 3: Manufacture of Alkaline Zinc-Manganese Batteries

[0059] (1) Manufacture of positive electrode ring

[0060] 500g of electrolytic manganese dioxide, 40g of expanded graphite powder (Baotou Jingyuan) and 4g of polytetrafluoroethylene wax xy-300 with an average particle size of 5μm, after rapid stirring and dispersion, add 25g of potassium hydroxide electrolyte with a mass concentration of 40%, and continue stirring After 10 minutes, it was rolled into tablets and granulated. The parameters of the prepared positive electrode ring are the same as those in Example 1.

[0061] (2) Preparation of negative electrode zinc paste

[0062] Add 100g 468 zinc alloy powder, 0.5g polyacrylic acid 720B, 0.4g polyacrylic acid sodium DK500 and OBS accounting for 0.01% of the total mass of the mixture to 50g of potassium hydroxide aqueous solution containing 4% ZnO with a mass concentration of 35%, and stir evenly After vacuum degassing, it is made into zinc paste, which ...

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Abstract

The invention belongs to the field of electrochemistry and relates to an alkaline zinc-manganese dioxide cell and a preparation method thereof. In the alkaline zinc-manganese dioxide cell, cathode and anode materials of the cell are modified by an organofluorine compound, polytetrafluoroethylene wax particles are doped in the anode to serve as an adhesive of electrolytic manganese and graphite powder, so that the stability of a cathode ring of the cell is greatly enhanced through high chemical stability of the node. Sodium p-perfluorous nonenoxybenzenesulfonate-containing electrolyte solution is dispersed in cathode zinc powder to form a protective film, electrochemical corrosion reaction of the zinc powder can be suppressed, and the zinc powder corrosion is avoided under the condition that the cell does not discharge. Therefore, the self discharge and gas evolution volume of the cell are effectively reduced. The alkaline zinc-manganese dioxide cell has the characteristics of stable heavy-current discharge, long storage period, and low gas evolution volume, and solves the problems that the conventional alkaline zinc-manganese dioxide cell has poor high-rate discharge performance, severe self discharge phenomenon of a zinc-nickel cell, short storage period, and the like.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and relates to a battery, especially an alkaline zinc-manganese battery and a preparation method thereof. Background technique [0002] At present, more and more portable multi-function electronic products with high power consumption are entering the market, such as digital cameras, electric toothbrushes, electric shavers, flashlights and remote control electric toys and so on. Consumers need to choose high-power and large-capacity batteries to meet their use requirements. Ordinary carbon batteries and current general alkaline zinc-manganese batteries are difficult to meet the performance requirements of high-power-consuming electronic products. Although lithium batteries have high capacity and high current performance, due to the use of anhydrous organic electrolyte, flammable and explosive battery accidents often occur, and the price is expensive, so most consumers do not choose this disposable ...

Claims

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Application Information

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IPC IPC(8): H01M6/06H01M4/08H01M4/62
Inventor 余谷峰
Owner ZHENGJIANG MUSTANG BATTERY CO LTD
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