Lead-carbon battery negative plate

A technology for negative plates and lead-acid batteries, which is applied in the direction of lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems of weakening the capacitance characteristics of carbon materials and the hole effect of carbon materials, and achieve the suppression of sulfation of negative electrodes, strong practicality and Stability and cycle life extension effect

Active Publication Date: 2015-12-09
ZHEJIANG NARADA POWER SOURCE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These solutions all use carbon materials and lead powder to be added to the negative electrode plate through dry mixing or wet mixing. This addition method will weaken the capacitance characteristics of carbon materials and the hole effect of carbon materials.

Method used

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  • Lead-carbon battery negative plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The lead carbon negative pole plate is prepared according to the following steps:

[0020] (1). Pour ordinary lead paste and high carbon content lead paste into airtight containers respectively, and stir for 15 minutes;

[0021] (2). After mixing evenly, add water slowly during stirring, and stir for 10 minutes; then, add sulfuric acid, continue stirring for 15 minutes, properly adjust the amount of water and acid, and control the apparent density of the lead paste at 4.0~4.5g / ml;

[0022] (3). Coat ordinary lead paste on the lead-calcium grid alloy, and then apply equal amounts of lead paste with high carbon content on both sides of the plate coated with ordinary lead paste;

[0023] (4). Put the paste-coated negative plate in an oven for curing and drying to prepare a lead-carbon negative plate, wherein the curing temperature is 65° C. and the curing time is 24 hours.

[0024] like figure 1 As shown, the outer layer of the formed lead-carbon negative electrode is ...

Embodiment 2

[0032] Weigh the raw materials required for ordinary negative lead paste, and weigh them in parts by mass: 100 parts of lead powder; 0.5 parts of carbon material A; 1.4 parts of barium sulfate; 0.5 parts of sodium lignosulfonate; 0.5 parts of humic acid; 0.1 parts of fiber; 15 parts of water; 8 parts of sulfuric acid.

[0033] Weigh the raw materials needed for high carbon content negative electrode lead paste, and weigh them respectively by mass: 100 parts of lead powder; 0.5 parts of carbon material A; 10 parts of carbon material B; 1.2 parts of barium sulfate; 0.3 parts of sodium lignosulfonate; 0.3 parts of humic acid; 0.2 parts of short fiber; 16 parts of water; 8 parts of sulfuric acid.

[0034] Described carbon material A is a kind of carbon black, and specific surface area is 5~50m 2 / g.

[0035] The carbon material B is one or more of activated carbon, graphite, graphene, and carbon black; the carbon material B has a hierarchical pore structure, and the average pore...

Embodiment 3

[0039] Weigh the raw materials required for ordinary negative lead paste, and weigh them in parts by mass: 100 parts of lead powder; 0.5 parts of carbon material A; 1.4 parts of barium sulfate; 0.5 parts of sodium lignosulfonate; 0.5 parts of humic acid; 0.1 parts of fiber; 15 parts of water; 8 parts of sulfuric acid.

[0040] Weigh the raw materials required for high carbon content negative electrode paste, and weigh them respectively by mass: 100 parts of lead powder; 0.5 parts of carbon material A; 12 parts of carbon material B; 1.2 parts of barium sulfate; 0.3 parts of sodium lignosulfonate; 0.3 parts of humic acid; 0.2 parts of short fiber; 16 parts of water; 8 parts of sulfuric acid.

[0041] Described carbon material A is a kind of carbon black, and specific surface area is 5~50m 2 / g;

[0042] The carbon material B is one or more of activated carbon, graphite, graphene, and carbon black; the carbon material B has a hierarchical pore structure, and the average pore diam...

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Abstract

The invention discloses a lead-carbon negative plate. Common negative lead paste coats lead-calcium grid alloy; negative lead paste with high carbon content coats two surfaces of a pole plate; and the lead-carbon negative plate is obtained by curing and drying, wherein the negative lead paste with high carbon content is prepared from the following raw materials in parts by weight: 100 parts of lead powder, 0.5-1 part of a carbon material A, 5-20 parts of a carbon material B, 0.1-1.5 parts of barium sulfate, 0.1-0.5 part of sodium lignosulphonate, 0.1-0.5 part of humic acid, 0.1-0.5 part of a staple fiber, 0-20 parts of water and 4-8 parts of 1.0-1.4g / cm<3> sulfuric acid. According to the lead-carbon negative plate, a hierarchical pore structure carbon material coats the outer layer of the negative plate; the capacitance characteristics of the carbon material are kept; the migration rate of ions in electrolyte is improved; the high-current discharge performance is improved; irreversible sulfation is inhibited; and the cycle life of a battery high-rate partial state of charging (HRPSoC) is prolonged.

Description

technical field [0001] The invention belongs to the field of lead-acid batteries, and in particular relates to a lead-carbon battery negative plate. Background technique [0002] With the continuous progress and development of society, the primary energy sources such as oil and coal are becoming increasingly exhausted, and the ecological environment pollution is deteriorating. Therefore, the new energy industry and the electric vehicle industry have attracted more and more attention. Lead-acid batteries are widely used in new energy storage systems and electric vehicle power drive systems due to their advantages of good reliability, low price, and high recycling. Applications in these fields require batteries in HRPSoC (High-RatePartial-State-of- Charge, partial state of charge high rate charge and discharge) has a long cycle life. However, under such working conditions in traditional lead-acid batteries, coarse, chemically inert lead sulfate crystals are easily formed on t...

Claims

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Application Information

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IPC IPC(8): H01M4/14H01M4/62
CPCH01M4/14H01M4/625H01M4/628Y02E60/10
Inventor 陈冬马晓明相佳媛丁平张育红
Owner ZHEJIANG NARADA POWER SOURCE CO LTD
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