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Electrode plate for alkaline storage battery and processing method thereof

A battery and electrode sheet technology, applied in the direction of alkaline battery electrodes, etc., can solve the problems of complex process formula, pollute the working environment, reduce the performance of the negative electrode, etc., and achieve the effect of simple process formula, no dust pollution, and stable performance.

Inactive Publication Date: 2004-03-17
何策衡
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

These two methods have certain disadvantages, such as the former, the process formula is complex, high temperature heating and drying are required, the binder content is high, the resistance increases, and the capacitance is relatively reduced, especially for the negative electrode of the nickel-metal hydride battery, due to high temperature heating The surface oxidation of the negative electrode has a certain acceleration effect, thereby reducing the performance of the negative electrode; the latter is that the active material is easy to fall off from the conductive substrate of the electrode, commonly known as powder falling, resulting in an increase in internal resistance, a decrease in capacitance, and even a short circuit. Dust is generated during the process, which pollutes the working environment and damages the health of producers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: 1) Weighing mixed powder: take by weighing respectively 85 grams of nickel hydroxide powder, 13 grams of cobaltous oxide powder and 2 grams of 8% polytetrafluoroethylene emulsion by the mixed powder component and proportioning of positive plate, Then put the weighed components into the powder mixer together and stir until they are evenly mixed. Adding a small amount of adhesive can prevent the material powder from flying and reduce environmental pollution; 2) Powder brushing: put the mixed material The powder is continuously moved into the powder brushing machine, and then the matrix nickel foam for making pole pieces is continuously put into the powder brushing machine, and the powder is moved together with the mixed material powder, and the material powder is absorbed and enters the matrix nickel foam. The amount of adsorption is set according to the need of discharge capacity; 3) Roll forming: put the electrode substrate after absorbing the material powd...

Embodiment 2

[0015] Embodiment 2: take by weighing respectively 92.5 grams of nickelous hydroxide powder, 7.0 grams of cobaltous oxide powder and 0.5 grams of 7% carboxymethylcellulose emulsion polytetrafluoroethylene, and the following process is the same as embodiment 1, and can become nickel. Positive plate for hydrogen or nickel-cadmium batteries.

Embodiment 3

[0016] Embodiment 3: take by weighing 88 grams of nickelous hydroxide powder, 11 grams of cobaltous oxide powder and 1.0 grams of 6% polyvinyl alcohol emulsion respectively, and following processing procedure is the same as embodiment 1, can become the nickel-metal hydride or nickel-cadmium battery of making Positive sheet.

[0017] Make the negative plate:

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Abstract

An alkaline accumulator electrode piece and processing method thereof, wherein the positive electrode sheet and the negative electrode sheet are composed of pole piece conducting base and hybrid powder, the composition and percentage by weight for the positive electrode sheets are, nickel oxyhydrogen 85.0-92.5%, Cobalt oxyhydrogen powder 7-13%, bonding agent 0.5-2.0%, the composition and percentage by weight for the negtive electrode sheets are, hydrogen storing alloy powder 97.5-99.5%, bonding agent 0.5-2.5%, the invention realizes easy availability of raw material, simple formula, stable performance, high capacitance and small resistance. íí

Description

technical field [0001] The invention relates to an electrode sheet of an alkaline storage battery and a processing method thereof. Background technique [0002] Currently known processing methods for the positive and negative electrodes of alkaline storage batteries mainly include wet and dry methods. These two methods have certain disadvantages, such as the former, the process formula is complex, high temperature heating and drying are required, the binder content is high, the resistance increases, and the capacitance is relatively reduced, especially for the negative electrode of the nickel-metal hydride battery, due to high temperature heating The surface oxidation of the negative electrode has a certain acceleration effect, thereby reducing the performance of the negative electrode; the latter is that the active material is easy to fall off from the conductive substrate of the electrode, commonly known as powder falling, resulting in an increase in internal resistance, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/24H01M4/26
CPCY02E60/124Y02E60/10
Inventor 何策衡
Owner 何策衡
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