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Composite additive slurry for super capacitor batteries and preparation method thereof

A supercapacitor battery and composite additive technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of shortened life of supercapacitor batteries, achieve high specific energy, long specific power, and enhance the effect of hydrophilicity and specific gravity

Active Publication Date: 2018-10-19
DAYING JUNENG TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of shortening the service life of the supercapacitor battery caused by the use of traditional additives, new graphene, carbon nanotubes, and conductive carbon black in the above supercapacitor battery. The present invention provides a special composite additive slurry for supercapacitor batteries

Method used

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  • Composite additive slurry for super capacitor batteries and preparation method thereof
  • Composite additive slurry for super capacitor batteries and preparation method thereof
  • Composite additive slurry for super capacitor batteries and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0060] A special compound additive slurry for supercapacitor batteries, which is composed of the following components: carbon nanotubes with a wall thickness of 30-45nm and a length of 5-20μm; metal salts are tetravalent lead salts, and activated carbon has a specific surface of 2150m 2 / g~2250m 2 / g, the specific gravity is 0.35g / cm 2 ~0.5g / cm 2 , the pore volume is 0.3cm 3 / g~5cm 3 / g, high specific area activated carbon with a pore size of 3nm-5nm and a particle size (D50) of 15μm-25μm, graphene oxide prepared by "low-temperature oxidation intercalation" combined with "mechanical grinding and peeling" method for no more than 6 hours. For yellow graphene oxide, the reducing agent is thiourea, the surfactant is polyvinyl alcohol, and deionized water.

Embodiment 2

[0062] A special composite additive slurry for supercapacitor batteries, consisting of the following components by mass: 8 parts of carbon nanotubes, 86 parts of activated carbon, 6 parts of metal salts, 3 parts of graphene oxide, 3 parts of reducing agents, and 3 parts of surfactants And 120 parts of deionized water, the carbon nanotubes are carbon nanotubes with a wall thickness of 30-45nm and a length of 5-20 μm, the metal salt is a tetravalent bismuth salt, and the graphene oxide adopts "low temperature oxidation intercalation Combining the "mechanical grinding and peeling" method to prepare brown-yellow graphene oxide for no more than 6 hours, the reducing agent is urea, and the surfactant is sodium dodecylsulfonate.

Embodiment 3

[0064] A special composite additive slurry for supercapacitor batteries, consisting of the following components by mass: 5 parts of carbon nanotubes, 84 parts of activated carbon, 4 parts of metal salts, 1 part of graphene oxide, 1 part of reducing agent, and 1 part of surfactant And 100 parts of deionized water; choose carbon nanotubes with a wall thickness of 30-45nm and a length of 5-20μm; use tetravalent tin salt as the metal salt, and use "low temperature oxidation intercalation" combined with "mechanical grinding and peeling" for graphene oxide Methods The brownish-yellow graphene oxide is prepared within 6 hours, the reducing agent is hydrazine hydrate, and the surfactant is cetyltrimethylammonium bromide.

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Abstract

The invention discloses composite additive slurry for super capacitor batteries and belongs to the technical field of capacitor battery materials. The composite additive slurry is composed of a carbonnanotube, metal salt, activated carbon, graphene oxide, a reducing agent, a surfactant and deionized water. The composite additive slurry can improve the utilization ratio of the active material of an energy storage device, contributes to the high specific energy, high specific power, long cycle life and stable performance of a battery, and realizes the organic combination of battery and capacitor performance.

Description

technical field [0001] The invention belongs to the technical field of capacitor battery materials, and in particular relates to a special composite additive slurry for super capacitor batteries and a preparation method thereof. Background technique [0002] A supercapacitor battery is a new type of energy storage device that combines the performance of a supercapacitor and a traditional battery (lead-acid battery, nickel-metal hydride battery, lithium-ion battery). Batteries; 2) The energy density is lower than that of traditional batteries, but greater than that of supercapacitors; 3) The service life is shorter than that of supercapacitors, but greater than that of traditional batteries; 4) The internal resistance and leakage current are small, excellent low-temperature characteristics, and environmentally friendly. The core of a supercapacitor battery is to add additives or composite additives with capacitive properties to the positive and negative electrodes of the batt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32
CPCH01G11/30H01G11/32Y02E60/13
Inventor 蒋虎南胡键漆长席
Owner DAYING JUNENG TECH & DEV
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