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A paste-type mercury-free battery slurry and preparation method thereof

A battery and slurry technology, which is applied in the field of paste-type mercury-free battery slurry and its preparation, can solve the problems of mercury-containing industrial wastewater, safety accidents, and environmental pollution, and achieve uniform corrosion inhibition effect, pollution-free electrical performance, Enhance the effect of corrosion inhibition

Active Publication Date: 2020-11-10
杭州长命电池有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Mercury chloride is a highly toxic substance, which is prone to safety accidents
[0005] 2. Mercury-containing industrial wastewater is produced during the production process, polluting the environment

Method used

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  • A paste-type mercury-free battery slurry and preparation method thereof

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Effect test

Embodiment 1

[0033] This embodiment provides a paste-type mercury-free battery slurry, and the raw material components include:

[0034] Electrolyte A 251kg, polyvinyl alcohol solution 7.2kg, paste 104.2kg, alkylphenol polyoxyethylene ether 0.36kg, thickener 109kg, bismuth trichloride 0.035kg, indium chloride 0.018kg, ascorbic acid 0.039kg;

[0035] The electrolyte A is a mixed aqueous solution of 0.64mol / L zinc chloride and 4.39mol / L ammonium chloride; the polyvinyl alcohol solution is 7.9×10 -4 mol / L polyvinyl alcohol and 8×10 -2 A mixed aqueous solution of mol / L boric acid; the paste is a mixture of glutinous rice flour, flour and starch in a weight ratio of 20:29.5:54.7; the thickener is electrolyte B and polyacrylamide in a weight ratio of 99.85: 0.15 composition mixture, the electrolyte B is a mixed aqueous solution of 1.58mol / L zinc chloride and 3.83mol / L ammonium chloride.

[0036] Further, a method for preparing the paste type mercury-free battery slurry is provided, comprising ...

Embodiment 2

[0043] This embodiment provides a paste-type mercury-free battery slurry, and the raw material components include:

[0044] Electrolyte A 240kg, polyvinyl alcohol solution 7kg, paste 100kg, alkylphenol polyoxyethylene ether 0.2kg, thickener 100kg, bismuth trichloride 0.02kg, indium chloride 0.01kg, ascorbic acid 0.02kg;

[0045] The electrolyte A is a mixed aqueous solution of 0.5mol / L zinc chloride and 4mol / L ammonium chloride; the polyvinyl alcohol solution is 7×10 -4 mol / L polyvinyl alcohol and 7×10 -2 The mixed aqueous solution of mol / L boric acid; Described paste is the mixture that glutinous rice flour, flour and starch are formed by weight ratio 15:25:50; Described thickener is electrolyte B and polyacrylamide is 99.8 by weight ratio: 0.2 composition mixture, the electrolyte B is a mixed aqueous solution of 1mol / L zinc chloride and 3mol / L ammonium chloride.

[0046] Further, a method for preparing the paste type mercury-free battery slurry is provided, comprising the ...

Embodiment 3

[0053] This embodiment provides a paste-type mercury-free battery slurry, and the raw material components include:

[0054] Electrolyte A 260kg, polyvinyl alcohol solution 8kg, paste 120kg, alkylphenol polyoxyethylene ether 0.5kg, thickener 120kg, bismuth trichloride 0.04kg, indium chloride 0.02kg, ascorbic acid 0.04kg;

[0055] The electrolyte A is a mixed aqueous solution of 0.7mol / L zinc chloride and 5mol / L ammonium chloride; the polyvinyl alcohol solution is 9×10 -4 mol / L polyvinyl alcohol and 9×10 -2 A mixed aqueous solution of mol / L boric acid; the paste is a mixture of glutinous rice flour, flour and starch in a weight ratio of 25:35:60; the thickener is electrolyte B and polyacrylamide in a weight ratio of 99.9: 0.1 composition mixture, the electrolyte B is a mixed aqueous solution of 2mol / L zinc chloride and 4mol / L ammonium chloride.

[0056] Further, a method for preparing the paste type mercury-free battery slurry is provided, comprising the steps of:

[0057] (1...

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Abstract

The invention relates to pasty mercury-free battery slurry and a preparation method thereof. According to the pasty mercury-free battery slurry, polyvinyl alcohol, boric acid, alkylphenol ethoxylate and ascorbic acid are used as organic corrosion inhibitors, and bismuth trichloride and indium chloride are used as inorganic corrosion inhibitors; and by adopting the organic corrosion inhibitors andthe inorganic corrosion inhibitors as mercury-replacing corrosion inhibitors and performing appropriate weight matching, the corrosion inhibition functions of all components compensate one another andare enhanced collaboratively, the corrosion inhibition effect is more uniform and obvious, and therefore the corrosion inhibition function of mercuric chloride can be really replaced. The pasty mercury-free battery slurry is environmentally friendly, free of pollution and stable in electrical performance, conforms to the national industrial policy and can eradicate the occurrence of poisoning andother safety accidents in the production process. Besides, the preparation method is simple, easy to implement and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of zinc-manganese battery manufacturing, and in particular relates to a paste-type mercury-free battery slurry and a preparation method thereof. Background technique [0002] At present, zinc-manganese paste batteries (such as R20S) produced in China use mercury chloride as a corrosion inhibitor to reduce battery self-discharge, but mercury chloride is a heavy metal pollutant that pollutes soil and water resources, and is a key prevention and control target of the national environmental protection department. , the use of mercuric chloride will be banned in the near future. [0003] The existing production methods of pasted zinc-manganese batteries (such as R20S) have the following disadvantages: [0004] 1. Mercury chloride is a highly toxic substance, which is prone to safety accidents. [0005] 2. Mercury-containing industrial wastewater is produced during the production process, polluting the environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/06
CPCH01M6/06
Inventor 徐增富李树波倪根忠
Owner 杭州长命电池有限公司
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