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Zinc-cathode material and zinc cathode and zinc secondary cell including this zinc cathode material

A negative electrode material and secondary battery technology, which is applied in the direction of battery electrodes, alkaline storage batteries, alkaline storage battery electrodes, etc., can solve the problems of high and low discharge capacity of batteries, large fluctuations, etc., to achieve stable discharge capacity, suppress deformation, Effect of suppressing discharge capacity fluctuation phenomenon

Inactive Publication Date: 2007-11-28
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This situation makes the discharge capacity of the battery fluctuate and fluctuate greatly.

Method used

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  • Zinc-cathode material and zinc cathode and zinc secondary cell including this zinc cathode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example is used to illustrate the zinc negative electrode material provided by the present invention, the zinc negative electrode containing the material, the zinc-nickel secondary battery and the preparation method thereof.

[0028] 78 grams of zinc oxide with an average particle diameter of 5 microns, 2 grams of calcium hydrogen phosphate with an average particle diameter of 2 microns, 1 gram of calcium metaphosphate with an average particle diameter of 1.5 microns, and 14 grams of magnesium bismuth with an average particle diameter of 4 microns The alloy powder is evenly mixed in a beaker, wherein the content of magnesium in the magnesium-bismuth alloy is 6% by weight. Then add 20 grams of concentration of 1.6% by weight of hydroxypropyl methylcellulose solution and 24 grams of concentration of 2% by weight of polyvinyl alcohol solution, fully stir, then add 5 grams of concentration of 60% by weight of polytetrafluoroethylene Ethylene suspension, stirred to obta...

Embodiment 2

[0032] This example is used to illustrate the zinc negative electrode material provided by the present invention, the zinc negative electrode containing the material, the zinc-nickel secondary battery and the preparation method thereof.

[0033] 75 grams of zinc oxide with an average particle diameter of 4.5 microns, 5 grams of calcium hydrogen phosphate with an average particle diameter of 2.5 microns, and 15 grams of magnesium-copper-tin alloy powder with an average particle diameter of 7 microns are uniformly mixed in a beaker. The content in the copper-tin alloy is 27% by weight. Then add 20 grams of concentration of 1.6% by weight of hydroxypropyl methylcellulose solution and 24 grams of concentration of 2% by weight of polyvinyl alcohol solution, fully stir, then add 5 grams of concentration of 60% by weight of polytetrafluoroethylene Ethylene suspension, stirred to obtain a uniform slurry, the slurry is coated on both sides of the tin-plated punched copper strip with a ...

Embodiment 3

[0037] This example is used to illustrate the zinc negative electrode material provided by the present invention, the zinc negative electrode containing the material, the zinc-nickel secondary battery and the preparation method thereof.

[0038] 80 grams of zinc oxide with an average particle diameter of 2 microns, 7 grams of calcium metaphosphate with an average particle diameter of 1.5 microns, and 8 grams of magnesium-manganese-copper alloy powder with an average particle diameter of 11 microns are uniformly mixed in a beaker, wherein magnesium is mixed with magnesium The percentage content in the manganese-copper alloy is 10% by weight, and the percentage content of copper in the magnesium-manganese-copper alloy is 5% by weight. Then add 20 grams of concentration of 1.6% by weight of hydroxypropyl methylcellulose solution and 24 grams of concentration of 2% by weight of polyvinyl alcohol solution, fully stir, then add 5 grams of concentration of 60% by weight of polytetrafl...

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Abstract

The invention discloses a zinc cathode material, which consists of zinc cathode active material and selected conductor, wherein the cathode material also contains calcium-phosphorus compound with even particle diameter not more than the even particle diameter of zinc cathode active material. The zinc cathode material has deformation-proof property, which inhibits the fluctuating phenomenon of discharge capacitance of battery effectively with fluctuating amplitude less than 50 mAh. The invention can improve the large current discharge property to make SC typed battery discharge under 30A, which makes the discharge capacitance reaches over 80% normal capacitance.

Description

technical field [0001] The invention relates to negative electrode materials for alkaline secondary batteries, negative electrodes containing the negative electrode materials and alkaline secondary batteries, in particular to a zinc negative electrode material, a zinc negative electrode containing the zinc negative electrode material, and a zinc negative electrode using the zinc negative electrode material. secondary battery. Background technique [0002] Alkaline secondary batteries currently on the market mainly include cadmium-nickel batteries, metal hydride nickel batteries, silver-zinc batteries, zinc-oxygen (zinc-air) batteries, zinc-manganese dioxide batteries, and zinc-nickel batteries. Nickel-cadmium batteries, nickel metal hydride batteries and nickel-zinc batteries all have the characteristics of good high-current discharge performance, and are suitable for use in electric tools and electric toys such as cordless electric drills, cordless vacuum cleaners, cordless...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/38H01M4/48H01M4/62H01M4/24H01M10/24
CPCY02E60/124Y02E60/10
Inventor 朱志坚孙皊
Owner BYD CO LTD
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