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A kind of preparation method of macroporous silver electrode

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

Active Publication Date: 2018-01-16
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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  • A kind of preparation method of macroporous silver electrode
  • A kind of preparation method of macroporous silver electrode
  • A kind of preparation method of macroporous 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 of a large-porosity silver electrode, comprising: step 1, the raw material of the large-porosity blank silver electrode is silver acetate powder, the electrode skeleton is a silver mesh, the silver acetate powder is loaded into the hopper of a roller press, and the silver Load the net into the reel of the roller press, adjust the thickness of the prepared silver electrode to 0.45-0.55mm, and then cut it into the required size; punch the cut electrode into a mold; put the punched silver electrode at 300°C Sinter at ±20°C for 20 minutes; prepare a rough silver electrode with large porosity; step 2, cut a long strip of silver foil with a length of 200 mm and a width of 20 mm, and punch a circular hole at one end of the silver foil with a punching machine as a connection hole, and prepare the silver guide lug; Step 3, weld the silver guide lug on the sintered large-porosity blank silver electrode with a spot welder; Step 4, form a battery: weld the large-porosity blank electrode with the silver guide lug It is connected with the stainless steel auxiliary plate by lugs and assembled into a formation 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 Patents(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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