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A kind of high specific energy zinc-silver battery and preparation method thereof

A zinc-silver battery and energy technology, applied in the manufacturing of silver batteries, alkaline batteries, secondary batteries, etc., can solve the problems of low specific energy of zinc-silver batteries, reduce internal resistance, have obvious effects, and increase the utilization rate of active materials. Effect

Active Publication Date: 2020-05-19
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention intends to provide a high specific energy zinc-silver battery to solve the problem of low specific energy of the prior art zinc-silver battery

Method used

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  • A kind of high specific energy zinc-silver battery and preparation method thereof
  • A kind of high specific energy zinc-silver battery and preparation method thereof
  • A kind of high specific energy zinc-silver battery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Example 1, a method for preparing a high specific energy zinc-silver battery. The positive electrode and the negative electrode are prepared by sintered silver electrode technology and paste-coated zinc electrode. The pole group is formed in the form of laminations. The positive end of the pole group is drawn out through the positive current collector silver wire, and the negative end is drawn out through the negative current collector silver wire. When the zinc-silver battery is formed, the electrolyte used is 25% potassium hydroxide aqueous solution by mass percentage, 92% ethanol solution is added during the formation process, and the mass ratio of the ethanol solution to the formed electrolyte is 0.2. After forming and drying, a single zinc-silver battery is formed, the positive electrode is composed of 5 silver plates, and the negative electrode is composed of 5 zinc plates.

[0018] Embodiment 1 discharge curve contrast sees figure 1 , through the 10A current tes...

Embodiment 2

[0019] Example 2, a method for preparing a high specific energy zinc-silver battery. The positive electrode and negative electrode are prepared by sintered silver electrode technology and paste zinc electrode. The pole group is formed in the form of laminations. The positive end of the pole group is drawn out through the positive current collector silver wire, and the negative end is drawn out through the negative current collector silver wire. When the zinc-silver battery is formed, the electrolyte used is 30% potassium hydroxide aqueous solution by mass percentage, 90% ethylene glycol solution is added during the formation process, and the mass ratio of the ethylene glycol solution to the formed electrolyte is 0.1. After forming and drying, a single zinc-silver battery is formed, the positive electrode is composed of 8 silver plates, and the negative electrode is composed of 8 zinc plates.

[0020] Embodiment 2 discharge curve contrast sees figure 2 , through the 30A curre...

Embodiment 3

[0021] Example 3, a method for preparing a high specific energy zinc-silver battery. The positive electrode and the negative electrode are prepared by sintering silver electrode technology and pasted zinc electrode. The pole group is formed in the form of laminations. The positive end of the pole group is drawn out through the positive current collector silver wire, and the negative end is drawn out through the negative current collector silver wire. When the zinc-silver battery is formed, the electrolyte used is 45% potassium hydroxide aqueous solution by mass percentage, 90% glycerol solution is added during the formation process, and the mass percentage of the glycerol solution and the formed electrolyte is 0.05. After formation, it is dried to form a single zinc-silver battery. The positive electrode is composed of 3 silver plates, and the negative electrode is composed of 3 zinc plates.

[0022] Embodiment 3 discharge curve comparison see image 3 , through the 5A curren...

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Abstract

This application discloses a preparation method of a high specific energy zinc-silver battery, comprising the following steps, the first step, preparing materials: selecting silver as the positive electrode, zinc as the negative electrode, potassium hydroxide aqueous solution as the electrolyte, and cellulose membrane as the diaphragm ; The second step, formation: prepare the above raw materials into zinc-silver batteries, put the zinc-silver batteries into the formation tank for charging for 40-70 hours; the third step, drying: dry the formed zinc-silver batteries; when the formation time When 2 / 3 of the total formation time is reached, add alcohol solution to the electrolyte solution, the mass ratio of alcohol solution to electrolyte solution is 0.05-0.2, and continue to complete the formation. The formed zinc-silver battery is packed in a plexiglass housing to form a single battery, and the single battery is subjected to a discharge test at 30°C. Compared with the prior art, the weight specific energy of the battery of the present invention is increased by 5% to 5%. 15%.

Description

technical field [0001] The invention belongs to a zinc-silver battery, in particular to a high-specific-energy zinc-silver battery and a preparation method thereof. Background technique [0002] Zinc-silver battery is a kind of chemical power source. When preparing, first prepare the materials, use silver as the positive electrode, zinc as the negative electrode, potassium hydroxide aqueous solution as the electrolyte, and form through the plate. When forming, the positive and negative plates cannot In direct contact, it needs to be separated by a cellulose film, and finally obtained after drying. Among them, chemical is a common name in this field: the procedure is to charge the newly manufactured zinc-silver battery for the first time, and the purpose of charging is to make the zinc-silver battery The zinc-silver battery is charged, and the traditional formation can only charge about 80% of the electricity in the zinc-silver battery first, and then it cannot continue to ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/32H01M10/28H01M10/44
CPCH01M10/28H01M10/32H01M10/446Y02E60/10Y02P70/50
Inventor 刘富亮刘强张克彪吴宁宁陈晓涛石斌王建勇
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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