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A kind of graphene composite carbon for lead-acid battery and preparation method thereof

A graphene composite, lead-acid battery technology, applied in lead-acid batteries, battery electrodes, circuits, etc., can solve the problems of easy agglomeration, large lap resistance, etc., to increase specific surface area, improve conductivity, and improve charging performance. Effect

Active Publication Date: 2019-03-29
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of can effectively improve the electrical conductivity of battery active material in order to solve existing graphene in the mixing process that exists easily to agglomerate, and the lap resistance between graphene edge graphene is bigger defect. Thereby improve the performance of battery, improve the discharge performance and service life of battery Lead-acid battery graphene composite carbon and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of graphene composite carbon for lead-acid battery, described lead-acid battery graphene composite carbon is made up of the material of following parts by weight: 350 parts of graphene, 420 parts of carbon black and 200 parts of carbon nanotubes, 30 parts of additives, 15 parts of iridium acetylacetonate, 5 parts of nonylphenol polyoxyethylene ether and 10 parts of monoethanolamine.

[0030] The auxiliary agent is composed of the following raw materials in parts by weight: 5 parts of hydroxyethyl cellulose, 10 parts of modified nano-zircon powder, 5 parts of turpentine alcohol and 15 parts of silane coupling agent. The preparation method of the modified nano-zircon powder is as follows: crush the zircon powder into 2-3 cm, put it into a hydrogen peroxide solution with a mass fraction of 72%, ultrasonically vibrate for 10 hours, take it out and dry it, and calcinate it at 450°C for 2 hours, and then Grinding into nano powder to obtain modified nano zircon powder, ...

Embodiment 2

[0038] A kind of graphene composite carbon for lead-acid battery, described graphene composite carbon for lead-acid battery is made up of the material of following parts by weight: graphene 450 parts, carbon black 320 parts and activated carbon 210 parts, auxiliary agent 20 parts, acetylacetone 18 parts of iridium, 7 parts of nonylphenol polyoxyethylene ether and 18 parts of monoethanolamine.

[0039] The auxiliary agent is composed of the following raw materials in parts by weight: 8 parts of hydroxyethyl cellulose, 13 parts of modified nano zircon powder, 7 parts of turpentine alcohol and 18 parts of silane coupling agent. The preparation method of the modified nano-zircon powder is as follows: crush the zircon powder into 2-3 cm, put it into a hydrogen peroxide solution with a mass fraction of 76%, ultrasonically vibrate for 11 hours, take it out and dry it, and then calcinate it at 480°C for 2.5 hours. Then it is ground into nano powder to obtain modified nano zircon powde...

Embodiment 3

[0047] A kind of graphene composite carbon for lead-acid battery, described graphene composite carbon for lead-acid battery is made up of the material of following weight parts: graphene 650 parts, activated carbon 310 parts, auxiliary agent 40 parts, acetylacetonate iridium 20 parts, nonyl 10 parts of phenol polyoxyethylene ether and 25 parts of monoethanolamine.

[0048] The auxiliary agent is composed of the following raw materials in parts by weight: 10 parts of hydroxyethyl cellulose, 15 parts of modified nano-zircon powder, 10 parts of turpentine alcohol and 25 parts of silane coupling agent.

[0049] The preparation method of the modified nano-zircon powder is as follows: crush the zircon powder into 2-3 cm, put it into a hydrogen peroxide solution with a mass fraction of 78%, vibrate it ultrasonically for 12 hours, take it out and dry it, and then calcinate it at 500°C for 3 hours, and then Grinding into nano powder to obtain modified nano zircon powder, the ultrasonic...

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Abstract

The invention relates to graphene composite carbon for a lead-acid battery. The graphene composite carbon for the lead-acid battery comprises the following substances by weight: 350-650 parts of graphene, 310-620 parts of auxiliary carbon material, 20-40 parts of additive, 15-20 parts of iridium acetylacetonate, 5-10 parts of nonylphenol polyoxyethylene ether and 10-25 parts of monoethanolamine. The graphene is a two-dimensional sheet-shaped material, the zero-dimensional carbon material is in a spherical shape, one-dimensional nanometer carbon is in a linear pipe tubular shape, thus, in the carbon material obtained through recombination, the specific surface area of the carbon material is increased when the graphene composite carbon is added to a negative electrode of the lead-acid battery, the problem of large connection resistance of the edge of the graphene caused by the graphene belonging to the two-dimensional carbon material is solved, and the multi-dimensional conductivity of the carbon material is improved; and when the graphene composite carbon is added to the negative electrode of the lead-acid battery, a sulfation phenomenon of the negative electrode can be effectively prevented, and the cycle lifetime of the battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of lead-acid battery manufacturing, and particularly relates to a graphene composite carbon for lead-acid batteries that can effectively improve the conductivity of battery active materials, thereby improving the performance of the battery, improving the discharge performance and service life of the battery, and a preparation method thereof . Background technique [0002] Carbon materials play an extremely important role in lead-acid batteries. Adding carbon materials to the positive plate can reduce the internal resistance of the battery and improve the utilization rate of active materials. Adding carbon materials to the negative electrode improves the conductivity of the negative active material, which is conducive to recharging, hinders the continuous growth of PbSO4 grains, controls the size, and is conducive to charging; The impurities contained in some carbon materials can inhibit the precipitation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/587H01M4/62H01M10/06B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/364H01M4/587H01M4/625H01M4/628H01M10/06Y02E60/10
Inventor 石沫戴贵平吴亮柯娃吴秋菊
Owner CHAOWEI POWER CO LTD
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