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A kind of alkaline battery negative electrode synthesis gel

An alkaline battery, a technology for synthesizing gel, applied in the field of synthesizing gelling agent and synthesizing gelling agent for negative electrode of alkaline battery, can solve problems such as damage to the performance of alkaline battery, leaching of alkaline electrolyte, dehydration, etc. Impact, improve dispersibility, and stabilize electrical properties

Active Publication Date: 2022-04-08
NINGBO FUBANG BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the alkaline battery is stored for a long time at room temperature for a gel formed by using carboxyl group-containing polymer fine powder, etc., a phenomenon called "dehydration" that occurs on the surface due to the leaching of the alkaline electrolyte is likely to occur.
This dehydration not only impairs the performance of the alkaline battery, but also causes leakage, that is, a phenomenon in which the alkaline electrolyte leaks from the outer case of the alkaline battery.

Method used

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  • A kind of alkaline battery negative electrode synthesis gel
  • A kind of alkaline battery negative electrode synthesis gel
  • A kind of alkaline battery negative electrode synthesis gel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add polyacrylate: 80%, propyltrimethoxysilane 12%, N,N-methylene acrylamide 0.2%, potassium persulfate 1.0% to the reaction kettle, and react to synthesize gel polymerization under the condition of pH 6.0 The reaction synthesis time is 4.5h, and the gel polymer is dried and ground into powder to obtain the negative electrode synthesis gel of alkaline batteries; zinc powder, common gel, corrosion inhibitor, and negative electrode synthesis gel of alkaline batteries are weighed. After the gel is mixed and dry-mixed, the electrolyte is added for mixing and wet-mixed, and after stirring and vacuuming, the zinc paste is made into the alkaline battery through a special syringe for zinc paste. The ordinary gel The agent is polyacrylate sodium salt.

Embodiment 2

[0025] Add polyacrylate: 81%, propyltrimethoxysilane 13%, N,N-methylene acrylamide 0.4%, potassium persulfate 2% to the reaction kettle, react to synthesize gel polymerization under the condition of pH 6.2 material, the reaction synthesis time is 4.8h, and the gel polymer is dried and ground into powder to obtain the negative electrode synthetic gel of alkaline battery; take zinc powder, common gel, corrosion inhibitor, negative electrode synthetic gel of alkaline battery After the gel is mixed and dry-mixed, the electrolyte is added for mixing and wet-mixed, and after stirring and vacuuming, the zinc paste is made into the alkaline battery through a special syringe for zinc paste. The ordinary gel The agent is polyacrylate sodium salt.

Embodiment 3

[0027] Add polyacrylate: 83%, propyltrimethoxysilane 14%, N,N-methylene acrylamide 0.5%, potassium persulfate 2.5% to the reaction kettle, and react to synthesize gel polymerization under the condition of pH 6.5 material, the reaction synthesis time is 5h, and the gel polymer is dried and ground into powder to obtain the negative electrode synthetic gel of alkaline battery; take zinc powder, common gel, corrosion inhibitor, alkaline battery negative electrode synthetic gel After the glue is mixed and dry-mixed, the electrolyte is added for mixing and wet-mixed, and after stirring and vacuuming, it is made into zinc paste, and the zinc paste is injected into the alkaline battery through a special syringe for zinc paste. The ordinary gel Sodium polyacrylate.

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Abstract

The invention relates to a synthetic gelling agent, in particular to an alkaline battery negative electrode synthetic gelling agent, which belongs to the field of alkaline battery materials. The composition of the alkaline battery negative electrode synthetic gel is as follows: polyacrylic acid salt: 80-85%, propyltrimethoxysilane 12-17%, cross-linking agent 0.2-0.8%, initiator 1.0-4.0%. The negative electrode synthesis gel for alkaline batteries of the present invention adopts the above-mentioned components, wherein propyltrimethoxysilane has a certain network rigidity and heat resistance, and polyacrylate has a typical three-dimensional network structure. The new type of high polymer has the common characteristics of both, so as to improve the stability and heat resistance of the gel after gelation.

Description

[0001] field of invention [0002] The invention relates to a synthetic gelling agent, in particular to an alkaline battery negative electrode synthetic gelling agent, which belongs to the field of alkaline battery materials. Background technique [0003] Due to the continuous development of alkaline zinc-manganese battery technology in recent years, customers have continuously recognized alkaline zinc-manganese batteries, and now put forward higher requirements for alkaline batteries. It has become a priority to develop batteries with stable electrical performance and excellent shock resistance after long-term storage. The long-term research direction of each alkaline zinc-manganese battery manufacturer. [0004] As an electrode of an alkaline battery, particularly a negative electrode, a substance obtained by gelling an alkaline electrolytic solution together with an electrode-action substance such as zinc powder is known, and as a general gelling agent used to form such an ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M4/08H01M6/04C08F265/02C08F220/54
Inventor 张磊屠科荣
Owner NINGBO FUBANG BATTERY
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