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A lead-carbon battery negative electrode, its preparation method, and the resulting battery

A lead-carbon battery and negative electrode technology, used in lead-acid battery electrodes, battery electrodes, lead-acid batteries, etc., can solve the problems of difficult to convert Pb, reduce surface area, etc., to improve conversion activity, prolong service life, and alleviate the irreversibility of negative electrodes. The effect of sulfation

Active Publication Date: 2016-05-25
骆驼集团蓄电池研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ideally, all lead sulfate and lead on the negative electrode undergo a completely reversible conversion during the battery charge-discharge cycle, but from a thermodynamic point of view, PbSO 4 Recrystallization will spontaneously reduce the surface area, there will always be a fraction of PbSO 4 Difficult to convert to Pb, this part of PbSO 4 Gradually grows, leading to irreversible sulfation

Method used

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  • A lead-carbon battery negative electrode, its preparation method, and the resulting battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A lead-carbon battery negative electrode comprises the following components in parts by weight:

[0049] 8.5 parts of sulfuric acid,

[0050] 0.5 parts of barium sulfate,

[0051] Norwegian lignin 0.1 part,

[0052] Nylon 0.05 parts,

[0053] 0.2 part of graphene nanobelt,

[0054] 0.01 part of silane coupling agent,

[0055] 0.05 part of lignosulfonate,

[0056] 0.02 parts of nano titanium dioxide,

[0057] 0.04 parts of nano silicon dioxide,

[0058] 10 parts of pure water,

[0059] 70 parts of lead powder;

[0060] Wherein, the density of the sulfuric acid is 1.38g / mL; the specific surface area of ​​the graphene nanobelt is 180 ~ 300m 2 / g, the average pore diameter is less than 50nm;

[0061] According to the composition formula of above-mentioned lead-carbon battery negative pole, make following preparation:

[0062] (1) Premix barium sulfate, organic expansion agent, graphene nanobelts, short fibers, nano-titanium dioxide and nano-silicon dioxide for 5 ...

Embodiment 2

[0069] A lead-carbon battery negative electrode comprises the following components in parts by weight:

[0070] 9.2 parts of sulfuric acid,

[0071] Barium sulfate 1.0 parts,

[0072] 0.25 parts of humic acid,

[0073] 0.12 part of acrylic fiber,

[0074] 0.4 part of graphene nanobelt,

[0075] 0.15 parts of silane coupling agent,

[0076] 0.06 parts of cellulose derivatives,

[0077] 0.03 parts of nano-titanium dioxide,

[0078] 0.06 parts of nano silicon dioxide,

[0079] 13 parts of pure water,

[0080] 76 parts of lead powder;

[0081] Wherein, the density of the sulfuric acid is 1.38g / mL; the specific surface area of ​​the graphene nanobelt is 300 ~ 430m 2 / g, the average pore size is 20nm~35nm;

[0082] According to the composition formula of above-mentioned lead-carbon battery negative pole, make following preparation:

[0083] (1) Premix barium sulfate, organic expansion agent, graphene nanobelts, short fibers, nano-titanium dioxide and nano-silicon dioxide ...

Embodiment 3

[0090] A lead-carbon battery negative electrode comprises the following components in parts by weight:

[0091] 10 parts of sulfuric acid,

[0092] 1.5 parts of barium sulfate,

[0093] 0.4 parts of humic acid,

[0094] 0.2 parts of polyester,

[0095] 5 parts of graphene nanoribbons,

[0096] 0.5 part of silane coupling agent,

[0097] 0.08 part of polycarboxylate,

[0098] 0.04 parts of nano-titanium dioxide,

[0099] 0.08 parts of nano silicon dioxide,

[0100] 15 parts of pure water,

[0101] 80 parts of lead powder;

[0102] Wherein, the density of the sulfuric acid is 1.38g / mL; the specific surface area of ​​the graphene nanobelt is 430 ~ 500m 2 / g, the average pore diameter is less than 50nm;

[0103] According to the composition formula of above-mentioned lead-carbon battery negative pole, make following preparation:

[0104] (1) Premix barium sulfate, organic expansion agent, graphene nanobelts, short fibers, nano-titanium dioxide and nano-silicon dioxide f...

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Abstract

The invention provides a cathode for lead-carbon batteries, a production method of the cathode and a battery made with the cathode. The cathode comprises, by weight, 8.5 to 10 parts of sulfuric acid, 0.5 to 1.5 parts of barium sulfate, 0.1 to 0.4 part of organic expander, 0.05 to 0.2 part of short fiber, 0.2 to 5 parts of graphene nanoribbon, 0.01 to 0.5 part of silane coupling agent, 0.05 to 0.08 part of dispersant, 10 to 15 parts of pure water, 0.06 to 0.12 part of nano-titanium dioxide and nano-silicon dioxide, and 70 to 80 parts of lead powder. Effective improvement is brought to both dynamic charge acceptance and cycle life of the battery made with the cathode.

Description

technical field [0001] The invention belongs to the technical field of lead-acid storage batteries, and in particular relates to a negative electrode of a lead-carbon battery, a preparation method thereof, and the produced battery. Background technique [0002] With the development of electric vehicles and power batteries, lead-acid batteries have begun to be used in hybrid vehicles. In order to ensure high charging efficiency and sufficient power output, the batteries are often in a partially charged state. The failure of the battery used in this state is different from the conventional mode, mostly reflected in the irreversible sulfation of the negative electrode. Ideally, all lead sulfate and lead on the negative electrode undergo a completely reversible conversion during the battery charge-discharge cycle, but from a thermodynamic point of view, PbSO 4 Recrystallization will spontaneously reduce the surface area, there will always be a fraction of PbSO 4 Difficult to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/14H01M4/20H01M4/21H01M4/62H01M10/06
CPCH01M4/14H01M4/20H01M4/21H01M4/62H01M10/06H01M2004/027H01M2220/20Y02E60/10
Inventor 张祖波李新禄夏诗忠张艳艳余萍
Owner 骆驼集团蓄电池研究院有限公司
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