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Lead-carbon battery negative electrode and preparation method thereof

A lead-carbon battery and negative electrode technology, which is applied in the field of lead-carbon battery negative electrode and its preparation, can solve the problems of affecting battery performance and batch stability, delaying the commercialization process, and expecting large differences, so as to improve mechanical and electrical properties , good consistency, and the effect of improving the possibility

Active Publication Date: 2015-10-21
ZIBO TORCH ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of active materials by means of powder pre-dispersion or continuous paste equipment is cumbersome and requires large investment, and different treatment methods and pre-dispersion effects are quite different from expectations, which will seriously affect battery performance and batch production. Second stability, thus delaying the commercialization process of this type of product

Method used

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  • Lead-carbon battery negative electrode and preparation method thereof
  • Lead-carbon battery negative electrode and preparation method thereof
  • Lead-carbon battery negative electrode and preparation method thereof

Examples

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Embodiment 1

[0034] A lead-carbon battery negative electrode, the formula is as follows (mass fraction): flocculent carbon material 0.2%, black humic acid 0.1%, conductive graphite 0.06%, indium oxide 0.015%, barium sulfate 0.2%, binder polytetrafluoroethylene 0.6% %, thionyl chloride 0.5%, the balance of lead powder.

[0035] Among them: black humic acid is: dissolve humic acid in anhydrous ethanol, filter after fully stirring, spread the filter residue under a fume hood for ventilation, then put it in an oven at 60°C for 2 hours, and then dry it at 110°C , which is black humic acid. The preparation method of the flocculent carbon material is as follows: the highly oriented pyrolytic graphite plate is used as the positive electrode, the lead plate is used as the auxiliary electrode, electrolyzed in the electrolyte solution containing sulfate, and the current density is 10mA / cm 2 , and then dispersed, the dispersion speed is 3000r / min, time 4h.

[0036] The preparation method is as follo...

Embodiment 2

[0039] A lead-carbon battery negative electrode, the formula is as follows (mass fraction): wherein 2% of flocculent carbon material, 0.2% of black humic acid, 0.065% of conductive graphite, 0.01% of indium oxide, 0.25% of barium sulfate, binder polytetrafluoroethylene 0.6%, thionyl chloride 1.5%, the balance of lead powder.

[0040] Among them: the preparation method of black humic acid is: dissolve humic acid in absolute ethanol, filter after fully stirring, spread the filter residue under the fume hood for ventilation, then put it in an oven at 85°C for 1 hour, and then put it in an oven at 125°C ℃ drying, that is, black humic acid. The preparation method of the flocculent carbon material is as follows: the highly oriented pyrolytic graphite plate is used as the positive electrode, the lead plate is used as the auxiliary electrode, and electrolyzed in the electrolyte containing sulfate, the current density is 20mA / cm 2 , and then dispersed, the dispersion speed is 2000r / mi...

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Abstract

The invention belongs to the technical field of lead storage batteries, and particularly relates to a lead-carbon battery negative electrode and a preparation method thereof. The lead-carbon battery negative electrode comprises the raw materials including, by weight, 0.2-2% of flocculent carbon materials, 0.1-0.3% of humic acid, 0.05-0.1% of conductive graphite, 0.01-0.05% of indium oxide, 0.1-0.5% of barium sulfate, 0.5-1.5% of a binding agent, 0.5-2.5% of thionyl chloride and the balance lead powder. According to the flocculent carbon materials, highly oriented pyrolytic graphite is used as the positive pole, a lead plate is used as an auxiliary electrode, electrolysis is performed in an electrolyte, the current density ranges from 10 mA / cm<2> to 20 mA / cm<2>, then dispersion is performed, the dispersion speed ranges from 2000 r / min to 3000 r / min, and the time is 2-5 h. The hydrogen evolution potential of a negative plate can be improved, the large-current charging and discharging performance is excellent, the preparation method of the lead-carbon battery negative electrode and the paste mixing technology are simple, and the consistency is good.

Description

technical field [0001] The invention belongs to the technical field of lead storage batteries, and in particular relates to a negative electrode of a lead-carbon battery and a preparation method thereof. Background technique [0002] Lead-carbon super battery is an internationally advanced cutting-edge technology in the battery industry and a breakthrough in battery technology. However, in China, due to the lack of substantial breakthroughs in technical bottlenecks such as screening of carbon materials, dispersion of carbon materials, and hydrogen evolution, the research and development and commercialization of this technology have progressed slowly. [0003] Carbon materials are the key components of this type of technology, and the effective dispersion of carbon materials in active materials also has an important impact. Since the type and quantity of functional groups inside the carbon material have a great influence on the battery performance and operation process, most...

Claims

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Application Information

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IPC IPC(8): H01M4/57H01M4/62H01M4/14H01M4/16H01M4/20
CPCH01M4/14H01M4/16H01M4/20H01M4/57H01M4/625Y02E60/10
Inventor 唐胜群马蛟陈默李敏吴涛陈龙霞
Owner ZIBO TORCH ENERGY
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