Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method for lead carbon negative electrode carbon-based additive

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: 2020-11-13
吉林省凯禹电化学储能技术发展有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A preparation method for lead carbon negative electrode carbon-based additive
  • A preparation method for lead carbon negative electrode carbon-based additive

Examples

Experimental program
Comparison scheme
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,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing a carbon-based additive for a lead-carbon negative electrode, and belongs to the technical field of lead-carbon battery production. The lead layer on the surface of the lead carbon negative electrode carbon-based additive prepared by carbon material sensitization, activation, and electroless lead plating is uniform and dense, which can significantly improve the hydrogen evolution overpotential of the carbon material and inhibit the hydrogen evolution reaction of the negative electrode of the lead-acid battery; improve the carbon material Affinity with lead, build a good lead and carbon connection structure. The high-rate partial state of charge (HRPSoC) simulation test charge and discharge cycle of the lead-acid battery containing this lead-carbon negative carbon-based additive in the negative electrode can reach 10555 cycles, which is 11 times that of the control lead-acid battery. The present invention significantly inhibits sulfation of the negative electrode of a partial state of charge (PSoC) lead-acid battery and prolongs the cycle life of the lead-acid battery.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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