High-capacity positive lead paste and preparation method thereof

A positive electrode paste, high-capacity technology, applied in the direction of electrode manufacturing, battery electrodes, lead-acid batteries, etc., can solve the problems of low specific energy by weight, the weight of the positive plate of lead-acid batteries cannot be reduced, and the utilization rate of positive active materials is low. , to prolong the cycle life, increase the electrochemical reaction area, and facilitate the dispersion

Pending Publication Date: 2021-11-12
HENAN CHAOWEI POWER SUPPLY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the main reasons for the low weight-to-energy ratio is that the weight of the positive plate of the lead-acid battery cannot be reduced due to the low utilization rate of the positive active material, especially in high-power and power applications. Seriously challenged by other high-performance new batteries

Method used

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  • High-capacity positive lead paste and preparation method thereof
  • High-capacity positive lead paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-capacity positive electrode paste prepared from the following raw materials: 100Kg lead powder, 8.5Kg sulfuric acid, 14Kg deionized water, 0.15Kg antimony trioxide, 0.05Kg bismuth trioxide, 0.02Kg zinc oxide , 0.08Kg polyester staple fiber, 0.4Kg high structure carbon black, 0.1Kg red lead.

[0018] The preparation process is as follows: pre-mix antimony trioxide, bismuth trioxide, zinc oxide, polyester staple fiber, and red lead with a high-speed mixer for 12-15 minutes; then add half of the lead powder to the paste mixer, and Sprinkle the premixed material and high-structure carbon black evenly on the surface of the lead powder, stir for 5-8 minutes, add the other half of the lead powder, and continue stirring for 15-20 minutes; then quickly add deionized water, and continue stirring for 10-15 minutes; finally add Sulfuric acid, control the acid addition time to be 16-20min, and continue to stir for 13-15min after the acid addition, to obtain the positive elect...

Embodiment 2

[0021] A high-capacity positive electrode paste prepared from the following raw materials: 100Kg lead powder, 8.5Kg sulfuric acid, 14Kg deionized water, 0.25Kg antimony trioxide, 0.07Kg bismuth trioxide, 0.03Kg zinc oxide , 0.1Kg polyester staple fiber, 0.6Kg high structure carbon black, 0.3Kg red lead.

[0022] The preparation process is as follows: pre-mix antimony trioxide, bismuth trioxide, zinc oxide, polyester staple fiber, and red lead with a high-speed mixer for 12-15 minutes; then add half of the lead powder to the paste mixer, and Sprinkle the premixed material and high-structure carbon black evenly on the surface of the lead powder, stir for 5-8 minutes, add the other half of the lead powder, and continue stirring for 15-20 minutes; then quickly add deionized water, and continue stirring for 10-15 minutes; finally add Sulfuric acid, control the acid addition time to be 16-20min, and continue to stir for 13-15min after the acid addition, to obtain the positive electr...

Embodiment 3

[0025] A high-capacity positive electrode paste prepared from the following raw materials: 100Kg lead powder, 8.5Kg sulfuric acid, 14Kg deionized water, 0.2Kg antimony trioxide, 0.06Kg bismuth trioxide, 0.025Kg zinc oxide , 0.09Kg polyester staple fiber, 0.5Kg high structure carbon black, 0.2Kg red lead.

[0026] The preparation process is as follows: pre-mix antimony trioxide, bismuth trioxide, zinc oxide, polyester staple fiber, and red lead with a high-speed mixer for 12-15 minutes; then add half of the lead powder to the paste mixer, and Sprinkle the premixed material and high-structure carbon black evenly on the surface of the lead powder, stir for 5-8 minutes, add the other half of the lead powder, and continue stirring for 15-20 minutes; then quickly add deionized water, and continue stirring for 10-15 minutes; finally add Sulfuric acid, the acid addition time is controlled to be 16-20min, and the stirring is continued for 13-15min after the acid addition is completed t...

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Abstract

The invention belongs to the technical field of lead storage batteries, and discloses a high-capacity positive lead paste. The high-capacity positive lead paste is prepared from, by mass, lead powder, sulfuric acid, deionized water, antimony trioxide, bismuth trioxide, zinc oxide, polyester staple fibers, high-structure carbon black and red lead. By adding the additives such as the high-structure carbon black, the pore volume and pore diameter of the positive active material are improved, and migration of sulfate radicals and hydrogen ions is improved, so that the utilization rate of the active material is improved, more capacity can be released under the same discharge current density, and the cycle life of the battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of lead storage batteries, and relates to a high-capacity positive electrode paste and a preparation method thereof. Background technique [0002] Lead-acid battery has the advantages of low cost, safety and reliability, mature production technology, long service life, easy recycling and stable electrical performance, and has become popular in the market. However, due to the weakness of lead-acid batteries in terms of weight ratio, energy and cycle use, its wide application is limited. The core component of the battery is the pole plate, and the performance of the pole plate is directly determined by the grid and lead paste. One of the main reasons for the low weight-to-energy ratio is that the weight of the positive plate of the lead-acid battery cannot be reduced due to the low utilization rate of the positive active material, especially in high-power and power applications. It is seriously challenged by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/57H01M4/04H01M10/06
CPCH01M4/628H01M4/625H01M4/62H01M4/57H01M4/04H01M10/06Y02E60/10
Inventor 曹行闫新华付强张勇王淼来世伟王龙飞
Owner HENAN CHAOWEI POWER SUPPLY
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