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Preparation method of carbon-based additive used for lead-carbon negative electrode

An additive and carbon-based technology, applied in lead-acid battery electrodes, battery electrodes, lead-acid batteries, etc., can solve the problems of severe hydrogen evolution reaction, uneven lead-carbon materials and pastes, etc.

Active Publication Date: 2018-02-27
吉林省凯禹电化学储能技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve a series of problems such as uneven lead-carbon material and paste caused by the addition of carbon materials on the negative plate of lead-carbon batteries, serious hydrogen evolution reaction, etc., the technical problem to be solved by the present invention is to provide a carbon-based additive for lead-carbon negative electrodes and its preparation method

Method used

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  • Preparation method of carbon-based additive used for lead-carbon negative electrode
  • Preparation method of carbon-based additive used for lead-carbon negative electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Take 3g of activated carbon, infiltrate in 20mL, 10wt.% sulfuric acid, wash and filter, then infiltrate, wash and filter with deionized water. Add 20mL of the treated carbon material, 5wt.% tin protochloride solution, stir for 1 hour, wash and filter, add 10mL, 0.0625wt.% palladium chloride solution, stir for 1 hour, wash, filter, and the treated The carbon material was put into 20mL DMSO solution containing 1.1g of thiourea and 4.8g of lead nitrate, and reacted at 60°C for 2 hours. Filter and dry overnight at 80°C to obtain a lead-carbon negative electrode carbon-based additive with a lead plating amount of 1.17wt.%.

[0026] Weigh 1Kg of lead powder, 1.3g of short fiber, 10g of barium sulfate, 2g of humic acid, 2g of sodium lignosulfonate, 3g of acetylene black and 20g of lead-carbon negative electrode carbon-based additives, dry mix for 30min, and then quickly add primary water 120mL, stirred for 10min, slowly added 58.86mL of 1.41g / mL sulfuric acid and stirred for ...

Embodiment 2

[0030] Take 3g of graphite, infiltrate in 20mL, 10wt.% sulfuric acid, wash and filter, then infiltrate, wash and filter with deionized water. Add 20mL of treated carbon material, 8wt.% stannous chloride solution, stir for 1 hour, wash and filter, add 10mL, 0.0725wt.% palladium chloride solution, stir for 1 hour, wash and filter, and the treated The carbon material was put into 20mL DMSO solution containing 2.2g thiourea and 9.6g lead nitrate, and reacted at 60°C for 2 hours. Filter and dry overnight at 80°C to obtain a lead-carbon negative electrode carbon-based additive with a lead plating amount of 2.11wt.%.

[0031]Weigh 1Kg of lead powder, 1.3g of short fiber, 10g of barium sulfate, 2g of humic acid, 2g of sodium lignosulfonate, 3.5g of acetylene black and 20g of lead-carbon negative electrode carbon-based additives, dry mix for 30min, and then quickly add a 120mL of water, stirred for 10min, slowly added 58.86mL of 1.41g / mL sulfuric acid and stirred for 30min, coated the...

Embodiment 3

[0035] Take 3g of activated carbon, infiltrate in 20mL, 10wt.% sulfuric acid, wash and filter, then infiltrate, wash and filter with deionized water. Add 20mL of the treated carbon material, 10wt.% tin protochloride solution, stir for 1 hour, wash and filter, add 10mL, 1wt.% palladium chloride solution, stir for 1 hour, wash and filter, and the treated carbon The material was put into 20mL DMSO solution containing 3.3g thiourea and 14.4g lead nitrate, and reacted at 60°C for 2 hours. Filter and dry overnight at 80°C to obtain a lead-carbon negative electrode carbon-based additive with a lead plating amount of 2.93wt.%.

[0036] Weigh 1Kg of lead powder, 1.3g of short fiber, 10g of barium sulfate, 2g of humic acid, 2g of sodium lignosulfonate, 4g of acetylene black and 20g of lead-carbon negative electrode carbon-based additives, dry mix for 30min, and then quickly add primary water 125mL, stirred for 10min, slowly added 58.86mL of 1.41g / mL sulfuric acid and stirred for 30min,...

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Abstract

The invention discloses a preparation method of a carbon-based additive used for a lead-carbon negative electrode, and belongs to the technical field of lead-carbon battery manufacturing. A lead layeron the surface of the carbon-based additive used for the lead-carbon negative electrode prepared through carbon material sensitization, activation and chemical lead plating is uniform and compact indistribution, the hydrogen evolution overpotential of carbon material can be obviously improved, and the hydrogen evolution reaction of the negative electrode of a lead acid battery is inhibited; andthe compatibility of carbon material and lead is promoted, so that a good lead and carbon connecting structure is constructed. The high rate part state-of-charge (HRPSoC) simulation test charge-discharge cycles of the lead acid battery with the negative electrode containing the carbon-based additive used for the lead-carbon negative electrode can reach 10555 circles, and is 11 times of that of a contrast lead acid battery. According to the preparation method, sulfation of the negative electrode of the part state-of-charge (PSoC) can be inhibited obviously, and the cycle life of the lead acid battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of lead-carbon battery production, and relates to a preparation method of a carbon-based additive for a lead-carbon negative electrode. Background technique. [0002] Lead-acid batteries have played an important role in promoting technological progress and social development. Based on the rise and use of hybrid electric vehicles and renewable energy, lead-acid batteries face the problem of battery failure caused by negative electrode sulfation in partial state of charge (PSoC) for a long time. The addition of carbon materials can inhibit sulfation, improve the charge acceptance of the negative electrode under PSoC, and prolong the service life of the battery. [0003] The addition of carbon materials to the negative electrode of lead-acid batteries also brings some problems, such as intensifying the hydrogen evolution reaction of the negative electrode, reducing the coulombic efficiency of the battery, caus...

Claims

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Application Information

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IPC IPC(8): H01M4/14H01M4/36H01M4/57H01M4/62H01M10/12
CPCH01M4/14H01M4/366H01M4/57H01M4/625H01M4/628H01M10/12Y02E60/10Y02P70/50
Inventor 林海波尹健李洪坤
Owner 吉林省凯禹电化学储能技术发展有限公司
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