Method for preparing power type columnar sealed zinc-nickel alkaline accumulator zinc negative pole

A zinc-nickel-alkali, power-type technology, applied in the field of alkaline batteries, can solve the problems of capacity attenuation, blocking nickel electrode channels, battery failure, etc.

Inactive Publication Date: 2006-09-06
HENAN HUANYU GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] a. Zinc dendrites grow extremely fast in alkali and easily penetrate the separator to the nickel electrode, causing the positive and negative electrodes to be connected and the battery to fail
[0008] b. Zinc oxide dissolves in alkali to form Zn(OH) 4 2- , permeates into the electrolyte, Zn(OH) 4 2- It is relatively heavy, and it migrates from the upper part of the zinc electrode to the lower part of the zinc electrode. When recharging, Zn(OH) 4 2- It turns into Zn again and deposits on the lower part of the zinc electrode. This is the so-called deformation and migration of the zinc electrode, resulting in less active material on the upper part of the zinc electrode and more on the lower part, thus reducing the capacity and shortening the battery life.
[0009] c. The self-dissolution of metal zinc, the charging product, causes the battery capacity to decrease, produces hydrogen gas, causes the battery to gas, and increases the difficulty of sealing
[0010] d. Zn(OH) in the electrolyte 4 2- Penetrate into the nickel electrode, form ZnO in the nickel electrode and block the channel of the nickel electrode, resulting in a decrease in the capacity of the nickel electrode

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 2g of polyethylene oxide, add 98g of water to make a 2% aqueous solution; weigh 2.5g of sodium carboxymethylcellulose, add 97.5g of water to make a 2.5% aqueous solution; weigh 6g of polyvinyl alcohol, add 94g of water to make into a 6% aqueous solution; weigh 3 g of hydroxypropyl cellulose and add 97 g of water to form a 3% aqueous solution;

[0028] (2) Weigh 19g of polyoxyethylene aqueous solution, 9.5g of sodium carboxymethyl cellulose aqueous solution, 14g of polyvinyl alcohol aqueous solution, and 9g of hydroxypropyl cellulose aqueous solution in the same container, and stir evenly with a stirrer to obtain a mixed viscose mixture;

[0029] (3) Weigh 60g of zinc powder, 50g of calcium zincate, 1g of lead oxide, 0.2g of indium oxide, 1.5g of bismuth oxide, and 0.6g of titanium oxide, and mix evenly to obtain a mixed powder. Take 100g of mixed powder and slowly Add slowly to the mixed binder solution in step (2), and stir for 2 hours. get the slurry;

[...

example 2

[0033] Weigh 19g of 1.5% hydroxypropyl cellulose aqueous solution, weigh 16g of 2.3% sodium carboxymethyl cellulose aqueous solution and 7% 14g polyvinyl alcohol aqueous solution and 2.5% hydroxypropyl cellulose aqueous solution in the same In the container, stir evenly with a stirrer to obtain a mixed adhesive;

[0034] Weigh 70g of zinc powder, 58g of calcium zincate, 0.5g of indium oxide, 2g of lead oxide, 3g of bismuth oxide, and 2g of titanium oxide, and mix evenly to obtain a mixed powder. In the mixture solution, stir for 3 hours, then make the zinc negative plate according to the method of embodiment 1 and finally make the power type cylinder sealed zinc-nickel alkaline storage battery.

[0035] 1 rate discharge

[0036] As can be seen from the data comparison in Table 2, the zinc-nickel battery is more than 30% higher than the cadmium-nickel battery operating voltage and weight specific energy when the same model battery is discharged at the same rate, indic...

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PUM

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Abstract

Said invention refers to power type column sealed zinc nickel alkaline accumulator zinc cathode manufacturing method. It contains using zinc powder, calcium zincate and zinc oxide as zinc cathodal primary material, indium oxide, yellow lead, bismuth oxide, and titanium oxide as auxiliary materials, using it with adhesive mixture composed of sodium carboxymethylcellulose, polyoxyethylene, polyvinyl alcohol and hydroxypropyl cellulose water solution to form cathode syrup, using punching copper strip as frame penetrating said cathode syrup, both sides uniformly stuck on pulp, through drying rolling to reach the specified thickeness, then coated single-layer graphite or active carbon, after drying coated single-layer organic matter, finally cut into zinc cathode piece with given size. Said invention can fully meet power main-supply requirement in different multiplying factor current charge and discharge process without electrolyte and gas leakage.

Description

technical field [0001] The invention relates to the technical field of alkaline storage batteries, in particular to a method for manufacturing a zinc negative electrode of a dynamic cylindrical sealed zinc-nickel alkaline storage battery. Background technique [0002] The dynamic cylindrical sealed zinc-nickel alkaline storage battery uses the current mature nickel electrode as the positive electrode and the zinc electrode as the negative electrode. The nickel electrode and the zinc electrode are separated by a porous diaphragm, which is rolled into The pole group is packed into a cylindrical metal shell, filled with electrolyte, and sealed. [0003] The working voltage and weight specific energy of this dynamic cylindrical sealed zinc-nickel alkaline storage battery and dynamic cylindrical sealed nickel-cadmium storage battery are shown in Table 1 [Central South University, "Chemical Power Source", 30-31 and Journal of power source, 132 (2004) 275-281]. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/26
CPCY02E60/124Y02E60/10
Inventor 李永创李中东赵林治查永忠徐松胡云峰
Owner HENAN HUANYU GROUP
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