Preparation method for negative plate of zinc-silver reserve cell

A zinc-silver reserve battery and negative plate technology, which is applied to the electrodes of primary batteries, can solve the problems of large current discharge and activation time not meeting the battery use requirements, poor use effect, low activity and capacity of the negative plate, etc.

Active Publication Date: 2013-06-19
河南新太行电源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The negative electrode is generally prepared by conventional wet paste, which cannot meet the requirements of the battery in terms of large current discharge and activation time, because the activity and capacity of the negative electrode prepared in this way are low, and the use effect is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] (1) First mix the highly active metal zinc powder, zinc oxide powder and mercuric oxide in proportion by weight (zinc powder: zinc oxide: mercuric oxide = (0.75:1:0.025)), pass through a 40-mesh sieve 3 times to get Uniform negative electrode powder, then mixed according to the specific ratio of negative electrode powder and 3% polyvinyl alcohol solution (negative material: 3% polyvinyl alcohol solution = 290g: 13ml), and then passed through a 40-mesh sieve for 3 times, that is, ready-to-use (2) Weigh 14.6g of the negative electrode material, spread it evenly in the tablet mold with the corresponding skeleton, and press it with a pressure of 20MPa on the hydraulic press, so that the average thickness of the obtained plate is between 0.51mm , and then wrap it with tissue paper for use; (3) Assemble the pressed negative plate and the corresponding positive plate into the formation tank, carry out corresponding charging, disassemble the fully charged negative plate, and was...

Embodiment 2

[0011] (1) Mix highly active metal zinc powder, zinc oxide powder and mercury oxide in proportion by weight (zinc powder: zinc oxide: mercury oxide = (1:1:0.03)), and pass through a 40-mesh sieve for 3 times to obtain a uniform Negative electrode powder, and then mixed according to the specific ratio of negative electrode powder and 3% polyvinyl alcohol solution (negative material: 3% polyvinyl alcohol solution = 300g: 11ml), and then passed through a 40-mesh sieve for 3 times to obtain the ready-to-use Negative electrode material; (2) Weigh 15.8 g of negative electrode material, spread it evenly in a tableting mold with a corresponding skeleton, and press it with a pressure of 20 MPa on a hydraulic press, so that the average thickness of the obtained plate is between 0.52 mm, Then wrap it with tissue paper for use; (3) Assemble the pressed negative electrode plate and the corresponding positive electrode plate into the formation tank, carry out corresponding charging, disassem...

Embodiment 3

[0013] (1) Mix highly active metal zinc powder, zinc oxide powder and mercury oxide in proportion by weight (zinc powder: zinc oxide: mercury oxide = (0.8:1:0.027)), and pass through a 40-mesh sieve for 3 times to obtain a uniform Negative electrode powder, and then mixed according to the specific ratio of negative electrode powder and 3% polyvinyl alcohol solution (negative material: 3% polyvinyl alcohol solution = 295g: 10ml), and then passed through a 40-mesh sieve for 3 times to obtain the ready-to-use Negative electrode material; (2) Weigh 18.7 g of the negative electrode material, spread it evenly in the tablet mold with the corresponding skeleton, and press it with a pressure of 20 MPa on the hydraulic press, so that the average thickness of the obtained plate is between 0.53 mm, Then wrap it with tissue paper for use; (3) Assemble the pressed negative electrode plate and the corresponding positive electrode plate into the formation tank, carry out corresponding charging...

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Abstract

The invention aims to provide a preparation method for a negative plate of a zinc-silver reserve cell, which is capable of effectively increasing discharge depth in a heavy load discharge situation and needs short activation time. According to the technical scheme, the reparation method is characterized by comprising the following steps of: (1) mixing high-activity metal zinc powder and zinc oxide powder with mercuric oxide, sieving the mixture to obtain negative powder, mixing the negative powder and a 3% polyvinyl alcohol solution, and sieving the mixture to obtain a negative substance; (2) laying the weighed negative substance in a tabletting mould, pressing the negative substance in an oil press, and binding the negative substance with cotton paper for later use; and (3) assembling a negative plate and a corresponding positive plate into a formation tank, detaching the fully charged negative plate after charging, washing the negative plate with water until the negative plate is neutral, and airing the negative plate, thus obtaining the required negative plate. The preparation method is suitable for the zinc-silver reserve cell and can be used for overcoming the bottleneck of the cell on heavy load discharge and activation time.

Description

Technical field: [0001] The invention relates to the preparation of a zinc-silver storage battery, in particular to a preparation method of a zinc-silver storage battery negative plate. Background technique: [0002] Zinc-silver reserve batteries are widely used in military fields such as underwater weapons to provide power sources for them. Therefore, the requirements for activation time and high-current discharge are relatively high. The positive electrode of the zinc-silver reserve battery is active silver powder. During the discharge process, the silver oxide is converted into simple silver powder, and the internal resistance is continuously reduced, which is conducive to high-current discharge. The negative electrode is generally prepared with a conventional wet paste method, which cannot meet the requirements of the battery in terms of high-current discharge and activation time, because the negative electrode plate prepared in this way has low activity and capa...

Claims

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Application Information

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IPC IPC(8): H01M4/08
Inventor 李加勇范建国田伟龙宋海峰程迪穆培振李楠曹二伟
Owner 河南新太行电源股份有限公司
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