Cellulose hydrate-vinylon fiber composite diaphragm paper for zinc-silver battery, preparation method, application and zinc-silver reserve battery

A technology of vinylon fiber and composite diaphragm, applied in the direction of synthetic cellulose fiber, synthetic cellulose/non-cellulose material pulp/paper, non-fibrous pulp, etc. It has the problems of alkali corrosion resistance, long life battery and long activation time, so as to achieve the effects of fast activation rate, long working life and fast infiltration rate

Inactive Publication Date: 2018-08-28
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, none of the separators available for zinc-silver batteries can simultaneously have rapid liquid absorption capacity, strong alkali corrosion resistance and silver migration resistance. The activation performance of the battery is related to the working life performance, and the working life of the fast activation battery is short. , on the contrary, the activation time of the long-life battery is relatively long
Therefore, none of the existing zinc-silver batteries can have the performance of fast activation and long life at the same time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The hydrated cellulose-vinylon fiber composite separator paper for the zinc-silver battery described in this embodiment includes 55 parts by weight of hydrated cellulose and 25 parts by weight of vinylon cellulose. Concrete preparation process is as follows:

[0022] 1. Prepare a saponification solution with ethanol, potassium hydroxide and pure water at a ratio of 5:1:10 by weight, heat the saponification solution to 45-50°C, and put cellulose triacetate with a polymerization degree of 400 into the saponification solution The saponification time is 20-30 minutes, and the hydrated cellulose after saponification is washed with pure water until neutral to obtain modified hydrated cellulose.

[0023] 2. Take 55 parts by weight of the above-mentioned hydrated cellulose and put it into a beater that has stored water. The concentration of the fiber in water is 2%. Stop when the dispersion is complete and there are no pulp points, and the modified hydrated cellulose pulp is o...

Embodiment 2

[0029] The hydrated cellulose-vinylon fiber composite separator paper for the zinc-silver battery described in this embodiment includes 75 parts by weight of hydrated cellulose and 45 parts by weight of vinylon cellulose. Concrete preparation process is as follows:

[0030] 1. Use ethanol, potassium hydroxide and pure water at a ratio of 5:1:10 by weight to prepare a saponified solution, heat the saponified solution to 45-50°C, and put cellulose triacetate with a polymerization degree of 500 into the saponified solution The saponification time is 20-30 minutes, and the hydrated cellulose after saponification is washed with pure water until neutral to obtain modified hydrated cellulose.

[0031] 2. Take 75 parts by weight of the above-mentioned hydrated cellulose and put it into a beater that has stored water. The concentration of the fiber in water is 2%. Stop when the dispersion is complete and there are no pulp points, and the modified hydrated cellulose pulp is obtained. ...

Embodiment 3

[0037] The hydrated cellulose-vinylon fiber composite separator paper for the zinc-silver battery described in this embodiment includes 60 parts by weight of hydrated cellulose and 35 parts by weight of vinylon cellulose. Concrete preparation process is as follows:

[0038] 1. Use ethanol, potassium hydroxide and pure water at a ratio of 5:1:10 by weight to prepare a saponified solution, heat the saponified solution to 45-50°C, and put cellulose triacetate with a polymerization degree of 500 into the saponified solution The saponification time is 20-30 minutes, and the hydrated cellulose after saponification is washed with pure water until neutral to obtain modified hydrated cellulose.

[0039] 2. Take 60 parts by weight of the above-mentioned hydrated cellulose and put it into a beater that has stored water. The concentration of the fiber in water is 2%. Stop when the dispersion is complete and there are no pulp points, and the modified hydrated cellulose pulp is obtained. ...

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Abstract

The invention provides cellulose hydrate-vinylon fiber composite diaphragm paper for a zinc-silver battery, a preparation method, application and a zinc-silver reserve battery. The composite diaphragmpaper is prepared from, by weight, 55-75 parts of cellulose hydrate and 25-45 parts of vinylon fiber. The preparation method comprises the steps that cellulose hydrate slurry, vinylon fiber slurry and a dispersing agent are added into a container, water is added for dilution, mixing is conducted for pulping, and then dewatering, squeezing, gluing, drying and hot press molding are conducted. The zinc-silver reserve battery comprises a zinc negative electrode and a silver oxide positive electrode, and the zinc negative electrode is wrapped by the cellulose hydrate-vinylon fiber composite diaphragm paper. The diaphragm paper is high in electrolyte wetting speed and high in alkali corrosion resistance capacity and silver migration resistance capacity, and the zinc-silver reserve battery is high in activation rate and long in service life.

Description

technical field [0001] The invention belongs to the technical field of zinc-silver battery materials, and in particular relates to a hydrated cellulose-vinylon composite diaphragm, an application of the hydrated cellulose-vinylon composite diaphragm to a zinc-silver storage battery, and a zinc-silver storage battery. Background technique [0002] Zinc-silver reserve battery has unique characteristics such as high specific energy, high specific power, large current discharge, stable working voltage, high voltage precision, and good safety. Zinc-silver batteries are widely used as DC power supply in high-power devices in countries all over the world. [0003] Among them, the long-life fast-activated zinc-silver reserve battery pack belongs to the chemical heating type zinc-silver reserve battery pack, which is usually used in disposable quick-response equipment. Therefore, the activation time and working life of the battery pack are the key characteristics of the battery pack....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M2/16H01M6/36D21H13/06D21H13/16D21H15/10D21H17/26D21H17/37D21H19/20D21H21/08D21H21/16H01M50/403H01M50/44
CPCH01M6/36D21H13/06D21H13/16D21H15/10D21H17/26D21H17/37D21H19/20D21H21/08D21H21/16H01M50/411H01M50/44H01M50/403
Inventor 刘延东张宁关海波景义军
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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