Large power super capacitor power battery

Abstract

The invention relates to a large power super capacitor power battery capable of being used as a power battery. Titanium-aluminum foil is adopted as cathode, a porous skeleton titanium foil with high specific surface area is prepared, a compact titanium dioxide dielectric layer is formed on the inner surface of a pore canal through high-temperature thermal oxidization, finally a conductive polymer monomer is used for steeping the pore canal to be polymerized and cover the surface of the titanium dioxide so as to form a conductive polymer cathode. By utilizing the high dielectric constant of the titanium dioxide and the high reliability of the conductive polymer cathode, a super capacitor power battery with large capacitance, high voltage, high reliability and super high energy density is realized.

Description

Technical field: [0001] The invention relates to an all-solid supercapacitor, which can store huge electric energy and effectively become a power battery for vehicles, and belongs to a new type of electric energy storage device. Background technique: [0002] Due to the gradual depletion of oil resources, the oil crisis has led to a sharp rise in oil prices all the time. When internal combustion engine vehicles consume a large amount of expensive oil resources, they also produce a large amount of exhaust pollution. Due to the wide range of sources of electric energy and the cleanliness and environmental protection, the financial crisis in 2008 brought great opportunities for the development of electric vehicles that can replace petroleum resources. [0003] New energy technology for automobiles is one of the high-tech development directions. Due to the weakness of the existing electric energy storage technology, it is mainly manifested in low electric energy storage, expensi...

AI Technical Summary

Problems solved by technology

The energy density of lead-acid batteries is 0.04-0.06kWh / kg. If the energy density is too low, it will also cause heavy metal pollution and cannot be used in automotive power batteries.

The energy density of nickel-metal hydride batteries is not high, generally 0.08-0.1kWh / kg, and the mileage of one charge is relatively short, and gasoline engine auxiliary start is needed to extend the mileage, resulting in a complex structure and expensive hybrid vehicles

Moreover, the content of nickel metal on the earth is very small and the price is expensive. Once it is put into practical use on a large scale, nickel metal will be tense and the price will skyrocket, which will eventually make the car expensive and difficult to popularize.

[0005] Chinese patent 200710124145 introduces lithium iron phosphate battery. Although the theoretical energy density can reach 170AH / kg, the electrical conductivity of lithium iron phosphate material is very poor, and the safety and reliability of high current charging and discharging are difficult to guarantee.

[0019] Chinese patent CN200710133296 also introduces a water-based ruthenium-based supercapacitor with high energy density. Since metal ruthenium is a rare and precious metal, the prepared supercapacitor is very expensive and difficult to be used in large quantities.

[0020] Chinese patent CN200710165636 introduces a composite electrode supercapacitor, which uses aluminum, copper, stainless steel or nickel as the electrode, and needs to use liquid electrolyte. Although the capacity is large, there are also problems of electrolyte corrosion and capacitor equivalent series resistance.

[0025] Chinese patent CN01807047 discloses a titanium dioxide dielectric layer made of metal titanium and titanate, coated with titanate on the metal titanium plate, and sintered at high temperature to prepare the titanium dioxide dielectric layer, which is used to manufacture large-capacity titanium electrolytic capacitors , the preparation of the titanium dioxide dielectric layer is too troublesome, and it takes multiple high-temperature sinterings to obtain a 500nm dense titanium dioxide dielectric layer

And introduced the use of aqueous solution to prepare titanium dioxide large capacitors, the leakage current is very large

Images