Lead-acid battery composite negative plate

A lead-acid battery and negative plate technology, applied in the field of electrochemical power supply, can solve the problems of electrolyte loss, hydrogen evolution, failure of composite plate lead-acid battery, etc.

Inactive Publication Date: 2011-11-30
JILIN HUINENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a lead-acid battery composite negative plate to solve the problem that the composite negative plate is easy to cause hydrogen evolution of the battery due to the low hydrogen evolution overpotential of the carbon itself, which leads to the loss of electrolyte, and then causes the failure of the lead-acid battery of the composite plate. question

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Paste and make negative plate according to conventional lead paste formula;

[0023] (2) coating the capacitor layer coating on both sides of the negative plate respectively, the coating amount is 1% of the weight of the negative active material to form a composite negative plate, and the capacitor layer slurry formula is as follows in parts by weight: coated with lead Compound activated carbon: 50g, the loading of lead compound coated on activated carbon is 0.5% of the mass of activated carbon, the specific surface area of ​​activated carbon is 1000m 2 / g, groove black: 20g, styrene-butadiene rubber: 5g, deionized water: 200g;

[0024] Wherein be coated with the preparation method of the gac of lead compound as follows:

[0025] (1), 10g of activated carbon to be treated is added to Pb(AC) with a concentration of 0.5g / L 2 In 0.1L of solution;

[0026] (2), above-mentioned active carbon lead acetate mixed solution is heated in electric heater earlier, causes the ...

Embodiment 2

[0031] (1) Paste and make negative plate according to conventional lead paste formula;

[0032] (2) coating the capacitor layer coating on both sides of the negative plate respectively, the coating amount is 2% of the weight of the negative active material to form a composite negative plate, and the capacitor layer slurry formula is as follows in parts by weight: coated with lead Compound activated carbon: 55g, the loading of lead compound coated on activated carbon is 5% of the mass of activated carbon, the specific surface area of ​​activated carbon is 2000m 2 / g, acetylene black: 25g, neoprene: 10g, deionized water: 250g;

[0033] Activated carbon coated with lead compounds is prepared as follows:

[0034] (1), 10g of activated carbon to be treated is added to Pb(AC) with a concentration of 5g / L 2 In 0.1L of solution;

[0035] (2), above-mentioned active carbon lead acetate mixed solution is heated in electric heater earlier, causes the moisture in the mixed solution to ...

Embodiment 3

[0040] (1) Paste and make negative plate according to conventional lead paste formula;

[0041] (2) coating the capacitor layer coating on both sides of the negative plate respectively, the coating amount is 2% of the weight of the negative active material to form a composite negative plate, and the capacitor layer slurry formula is as follows in parts by weight: coated with lead Compound activated carbon: 55g, the loading of lead compound coated on activated carbon is 10% of the mass of activated carbon, the specific surface area of ​​activated carbon is 2000m 2 / g, acetylene black: 25g, neoprene: 10g, deionized water: 250g;

[0042] Activated carbon coated with lead compounds is prepared as follows:

[0043] (1), 10g of active carbon to be treated is added to Pb(AC) with a concentration of 10g / L 2 In 0.1L of solution;

[0044] (2), above-mentioned active carbon lead acetate mixed solution is heated in electric heater earlier, causes the moisture in the mixed solution to e...

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Abstract

The invention provides a lead-acid battery composite negative plate, which belongs to the field of electrochemical power sources. The active carbon used in the composite negative plate has been pretreated by depositing lead compounds on the surface, and the present invention deposits lead compounds such as lead oxide on the surface of the active carbon by applying the method of evaporation concentration and pyrolysis. The composite polar plate of activated carbon prepared by this pretreatment method has greatly improved its hydrogen evolution overpotential and the specific capacitance value of the activated carbon contained in it, and also improved the high rate part of the battery assembled with this composite polar plate. Cycle life under state of charge.

Description

technical field [0001] The invention belongs to the field of electrochemical power sources, and belongs to the improvement technology of the negative plate of the lead-acid battery. The lead-acid battery prepared by the composite negative plate provided by the invention is suitable for hybrid vehicles, wind turbines and solar power generation which are repeatedly and rapidly charged and discharged in a partially charged state PSOC Energy storage and other industries. Background technique [0002] With the introduction of the national new energy strategy, automakers have begun to pay more attention to the research and development of hybrid vehicles, and the country has also increased its support for wind and solar off-grid grid-connected energy storage, but the energy mentioned in the new energy strategy The storage and application methods pose very big challenges to existing battery technologies. [0003] Currently commonly used and relatively mature batteries are mainly di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/20H01M4/62
CPCY02E60/126Y02E60/10
Inventor 孙大强王百顺靳承铀
Owner JILIN HUINENG TECH
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