Zinc paste, preparation method thereof and zinc-manganese battery

A zinc-manganese battery and zinc paste technology, which is applied to battery electrodes, secondary batteries, circuits, etc., can solve problems such as obvious stratification, unsuitable batteries, and inability to fuse zinc paste, and achieve low cost, corrosion inhibition, and short process Effect

Inactive Publication Date: 2020-08-04
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the zinc paste formula in the above method uses polyacrylic acid, polyacrylate, and sodium polyacrylate as binders and thickeners, which can hardly play a role in neutral or even weakly acidic electrolytes, resulting in the inability of the prepared zinc paste to fuse , obvious delamination, not suitable for battery

Method used

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  • Zinc paste, preparation method thereof and zinc-manganese battery
  • Zinc paste, preparation method thereof and zinc-manganese battery
  • Zinc paste, preparation method thereof and zinc-manganese battery

Examples

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Comparison scheme
Effect test

Embodiment 1

[0063] This embodiment provides a zinc paste, and the zinc paste is mainly composed of a zinc-containing material, an indium-containing material, a binder, a thickener and an electrolyte.

[0064] The zinc-containing material is zinc powder with a purity of 99.95%, and the indium-containing material is In(OH) 3 , the binder is pregelatinized starch, and the thickener is sodium carboxymethyl cellulose.

[0065] The electrolyte is 3mol / L ZnCl 2 solution, the solvent is deionized water, the volume of the electrolyte and the zinc powder are equal, and the pH of the electrolyte is 3.5.

[0066] In the zinc paste, the quality of zinc-containing material, indium-containing material, binder and thickener is respectively:

[0067]

[0068] The present embodiment also provides a kind of preparation method of above-mentioned zinc paste, and its specific method is:

[0069] Preparation of zinc paste: weighed Zn powder, In(OH) 3 , pregelatinized starch, and CMC, and manually stir ev...

Embodiment 2

[0072] This embodiment provides a zinc paste, and the zinc paste is mainly composed of a zinc-containing material, an indium-containing material, a binder, a thickener and an electrolyte.

[0073] The zinc-containing material is zinc powder with a purity of 99.95%, and the indium-containing material is In(OH) 3 , the binder is pregelatinized starch, and the thickener is sodium carboxymethyl cellulose.

[0074] The electrolyte is 2mol / L ZnSO 4 solution, the solvent is deionized water, the volume of the electrolyte and the zinc powder are equal, and the pH of the electrolyte is 4.7.

[0075] In the zinc paste, the quality of zinc-containing material, indium-containing material, binder and thickener is respectively:

[0076]

[0077] The present embodiment also provides a kind of preparation method of above-mentioned zinc paste, and its specific method is:

[0078] Preparation of zinc paste: weighed Zn powder, In(OH) 3 , pregelatinized starch, and CMC, and manually stir ev...

Embodiment 3

[0081] This embodiment provides a zinc paste, and the zinc paste is mainly composed of a zinc-containing material, an indium-containing material, a binder, a thickener and an electrolyte.

[0082] The zinc-containing material is zinc powder with a purity of 99.95%, and the indium-containing material is In(OH) 3 , the binder is pregelatinized starch, and the thickener is sodium carboxymethyl cellulose.

[0083] The electrolyte is 1mol / L ZnSO 4 +0.2mol / L MnSO 4 solution, the solvent is deionized water, the volume of the electrolyte and the zinc powder are equal, and the pH of the electrolyte is 5.2.

[0084] In the zinc paste, the quality of zinc-containing material, indium-containing material, binder and thickener is respectively:

[0085]

[0086] The present embodiment also provides a kind of preparation method of above-mentioned zinc paste, and its specific method is:

[0087] Preparation of zinc paste: weighed Zn powder, In(OH) 3 , pregelatinized starch, and CMC, an...

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Abstract

The invention provides a zinc paste, a preparation method thereof and a zinc-manganese battery. The zinc paste comprises a zinc-containing material, an indium-containing material, a binder and a thickener, and the binder is a pre-gelatinized material. The preparation method comprises the following steps: stirring and mixing the zinc-containing material, the indium-containing material, the binder and the thickener according to a formula ratio, adding an electrolyte, and continuously stirring and mixing to obtain the zinc paste, and the binder is the pre-gelatinized material. The zinc paste provided by the invention can be used for a weakly acidic electrolyte, the charging and discharging capacity of the battery can be guaranteed, the capacity retention ratio of the zinc-manganese battery isimproved, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of batteries, and relates to a zinc paste, a preparation method thereof and a zinc-manganese battery. Background technique [0002] In recent years, lithium-ion batteries (LIBs) have been extensively studied in the field of electrochemistry due to their high energy density, long cycle life, small self-discharge, and no memory effect, and they occupy a large market share. However, lithium-ion batteries are costly, limited in lithium resources, and less safe. Therefore, it is particularly important to develop secondary batteries with high capacity, fast charging and discharging, good safety, rich raw material resources, environmental friendliness and strong adaptability. Based on the above problems, the replacement of organic electrolytes with water-based electrolytes is expected to reduce costs, increase power density, and improve safety performance. The aqueous solution system of multivalent zinc-ion batter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/42H01M4/62H01M4/04H01M10/36
CPCH01M4/04H01M4/42H01M4/622H01M10/36Y02E60/10
Inventor 石程王国光王占洲蒋易晟刘军平楼航宇
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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