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Preparation method for high-porosity silver electrode

A silver electrode, porosity technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as surface bending, battery short circuit, battery failure, etc., to improve flatness, weaken the effect of lead lug welding stress, lead lug Uniform effect of welding points

Active Publication Date: 2016-03-23
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

Stress will be generated during the production process, and unevenness such as deformation and surface curvature will occur during the formation process. However, the bipolar stack structure determines that such unevenness will easily cause short circuits in the battery and increase the risk of battery failure.

Method used

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  • Preparation method for high-porosity silver electrode
  • Preparation method for high-porosity silver electrode
  • Preparation method for high-porosity silver electrode

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Embodiment Construction

[0028] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0029] see figure 1 , a kind of preparation method of macroporous silver electrode, following steps:

[0030] Step 101, manufacturing a large-porosity blank silver electrode:

[0031] The raw material for the large-porosity rough silver electrode is silver acetate powder, and the electrode skeleton is silver mesh. The preparation method adopts a one-time roll forming method; the specific steps are: put the silver acetate powder into the hopper of the roller press, and put the silver mesh into the reel of the roller press , start the roller press, adjust the thickness of the prepared silver electrode to 0.45-0.55mm, generally the preferred thickness of the silver electrode is 0.45mm, 0.5mm, or 0.55mm, and then cut it into the required size; u...

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Abstract

The invention discloses a preparation method for a high-porosity silver electrode. The preparation method comprises the steps of 1, taking silver acetate powder as a raw material for manufacturing the high-porosity blank silver electrode, taking a silver net as an electrode skeleton, filling the silver acetate powder into a hopper of a roller press and putting the silver net on a reel of the roller press, adjusting the thickness range of the prepared silver electrode to be 0.45-0.55mm and cutting into required dimensions; stamping and molding the cut electrode by a die; sintering the cut silver electrode at the temperature of 300 DEG C plus or minus 20 DEG C for 20 min; and obtaining the high-porosity blank silver electrode; 2, cutting the blank silver electrode into long-strip-type silver foil strips with length of 200mm and width of 20mm, punching a circular hole in one end of each silver foil strip by a drilling machine to be used as a connecting hole, and preparing a silver guide lug; 3, welding the silver guide lug on the sintered high-porosity blank silver electrode by a spot welding machine; and 4, battery formation: connecting the high-porosity blank silver electrode welded with the silver guide lug with a stainless steel auxiliary pole plate through the guide lug for assembling into the formed battery.

Description

technical field [0001] The invention relates to the technical field of chemical power sources, in particular to a method for preparing a large-porosity silver electrode. Background technique [0002] Aluminum silver oxide battery is the ideal choice for the power source of torpedo propulsion at present. The main body of the aluminum silver oxide battery is mainly composed of aluminum alloy negative electrode, silver oxide positive electrode, diaphragm and various current collecting components. The stack structure adopts a bipolar stack structure. One side of the bipolar unit is the positive electrode of silver oxide, and the other side is the negative electrode of aluminum alloy. The monomers are superimposed on each other, and the necessary fastening and sealing are performed to form an aluminum silver oxide stack. The silver electrode is used as the positive electrode of the aluminum silver oxide battery, and its performance directly affects the performance of the batter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M4/1395H01M2/26H01M50/528H01M50/534H01M50/536
CPCH01M4/1395H01M4/38H01M50/531Y02E60/10
Inventor 韩雪荣吕霖娜
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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