A kind of lead-acid storage battery cathode lead paste containing calcium lead acid

A lead-acid battery, positive lead paste technology, applied in battery electrodes, circuits, electrical components and other directions, can solve the problems of battery cycle life impact, carbon decomposition, impact damage, etc., to improve battery discharge capacity and cycle life, The effect of improving the efficiency of chemical formation

Active Publication Date: 2017-12-29
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the most common way is to add carbon material additives, but after the carbon material is formed, half of the carbon is decomposed.
At the same time, the generated carbon dioxide also has a certain impact damage to the plate. At the same time, the decomposed carbon increases the porosity of the plate but also weakens the mechanical performance of the plate, thus affecting the cycle life of the battery to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A lead-acid battery positive lead paste containing calcium lead acid, the mass percent of each component is:

[0022] Shimadzu type lead powder or Barton type lead powder 71%,

[0023] Sulfuric acid 4%,

[0024] water 18%,

[0025] Short fiber 2%,

[0026] CaPbO 3 5%.

[0027] The concentration of the sulfuric acid is 43wt%.

[0028] The short fiber is a mixture of polyacrylonitrile fiber, polypyrrole fiber and polythiophene fiber, and the length of the short fiber is 2-4mm.

[0029] The CaPbO 3 The synthesis method is as follows: CaO with a purity of 99.99% and PbO with a purity of 99.99% 2 Mix evenly at a molar ratio of 1:1, put into a six-faced high-pressure reactor device, and react for 1 hour at 1000°C and 6.5Gpa.

Embodiment 2

[0031] A lead-acid battery positive electrode paste containing calcium lead acid, the mass percent of each component is:

[0032] Shimadzu type lead powder or Barton type lead powder 89%,

[0033] Sulfuric acid 4%,

[0034] water 5%,

[0035] Short fiber 0.05%,

[0036] CaPbO 3 1.95%.

[0037] The concentration of the sulfuric acid is 45wt%.

[0038] The short fiber is a mixture of polyvinyl chloride fiber and acrylic fiber, and the length of the short fiber is 2-4mm.

[0039] The CaPbO 3 The synthetic method of is as follows: the purity is 99.99% CaO and the purity is 99.99% PbO 2 Mix evenly at a molar ratio of 1:1, put it into a six-faced high-pressure reactor device, and react for 1 hour at 1200°C and 5Gpa.

Embodiment 3

[0041] A lead-acid battery positive electrode paste containing calcium lead acid, the mass percent of each component is:

[0042] Shimadzu-style lead powder 80%,

[0043] Sulfuric acid 9%,

[0044] Water 7.22%,

[0045] Short fiber 1.03%,

[0046] CaPbO 3 2.75%.

[0047] The concentration of the sulfuric acid is 44wt%.

[0048] The short fiber is polypropylene fiber, polyvinyl chloride fiber, acrylic fiber, and the length of the short fiber is 2-4mm.

[0049] The CaPbO 3The synthesis method is as follows: CaO with a purity of 99.99% and PbO with a purity of 99.99% 2 Mix evenly at a molar ratio of 1:1, put into a six-faced high-pressure reactor device, and react for 1 hour at 1100°C and 11.25Gpa.

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Abstract

The invention relates to the field of the lead acid storage battery, and discloses lead acid storage battery positive electrode lead paste containing calcium plumbate. The ingredients of the lead paste are as follows based on mass percentage: 71-89% of lead powder, 4-14% of sulfuric acid, 5-18% of water, 0.05-2% of short fibers and 0.5-5% of CaPbO3. The lead acid storage battery positive electrode lead paste provided by the invention can improve the formation efficiency, reduce softening and falling off of positive electrode active substances, improve the cold starting performance, improve the discharge capacity of the battery, and prolong the service life of the battery.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a lead-acid battery cathode lead paste containing calcium lead acid. Background technique [0002] Due to the requirements of the "Lead Battery Industry Access Conditions", all lead-acid battery companies are implementing internalization into an environmentally friendly process. However, there is a problem that the internalization effect is not good. Since the main component of raw boards is divalent lead compounds, their electrical conductivity is not very good. Lead sulfate is an insulator, while lead oxide and basic lead sulfate are semiconductors. Before they are formed, battery plates consist of a mixture of these substances. Plate formation can only begin after a conductive path has been formed. Pavlov and his collaborators have shown that in sulfuric acid solutions, the material near the current collector is first converted to conductive lead and lead dioxide, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/57H01M4/62
CPCH01M4/57H01M4/62H01M4/624Y02E60/10
Inventor 马洪涛黄思淼叶剑张凯孙建逊
Owner CHAOWEI POWER CO LTD
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