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Alkaline battery negative electrode synthetic gel agent

An alkaline battery and synthetic gel technology, which is applied in the field of alkaline battery negative electrode synthetic gel and synthetic gel, can solve the problems of alkaline electrolyte leaching, leakage, and damage to the performance of alkaline batteries, and achieve improved The effect of stability and heat resistance

Active Publication Date: 2019-05-28
NINGBO FUBANG BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for gels formed using fine powders of carboxyl-containing polymers, etc., when alkaline batteries are stored at room temperature for a long time, it is easy to cause the alkaline electrolyte to leach and appear on the surface. Phenomenon
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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  • Alkaline battery negative electrode synthetic gel agent
  • Alkaline battery negative electrode synthetic gel agent
  • Alkaline battery negative electrode synthetic gel agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 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

[0024] 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

[0026] 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 gel agent, in particular to an alkaline battery negative electrode synthetic gel agent, and belongs to the field of alkaline battery materials. Components of the alkaline battery negative electrode synthetic gel agent disclosed by the invention are as follows: 80-80% of polyacrylate; 12-17% of propyltrimethoxysilane, 0.2-0.8% of a cross-linking agent and 1.0-4.0%% of an initiator. The alkaline battery negative electrode synthetic gel agent disclosed by the invention adopts the above components, wherein propyltrimethoxy silane has certain network rigidity and heat resistance, polyacrylate has a typical three-dimensional network structure, and a novel high polymer generated after crosslinking polymerization of the propyltrimethoxy silane and the polyacrylate has the common characteristics of the propyltrimethoxy silane and the polyacrylate, so that the stability and the heat resistance of a gel after gelation are improved.

Description

field of invention [0001] 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 [0002] 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. [0003] 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 electro...

Claims

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Application Information

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