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A mixed super capacitor

A supercapacitor, a hybrid technology, applied in the direction of capacitors, electrolytic capacitors, capacitor electrodes, etc., can solve the problems of low working voltage and hindering capacitor energy storage, etc., to reduce resistance, increase capacity and energy storage density, and simple structure Effect

Inactive Publication Date: 2007-05-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low working voltage has become a bottleneck hindering the development of high-power pulse power supply technology by using capacitor energy storage

Method used

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  • A mixed super capacitor

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Press the prepared ruthenium dioxide film (φ35mm×0.1mm) on the substrate current collector to form a cathode 3, and separate it from the tantalum anode 2 (φ35mm×h3.2mm) with a glass fiber cloth separator 5 to form a supercapacitor unit ; Then put it into the metal tantalum shell 6, inject the electrolyte solution, and finally the two electrodes are drawn out by the anode lead 1 and the cathode lead 7 respectively. The electrolyte uses sulfuric acid with a concentration between 30% and 40%, and 2.1g of copper sulfate is added to every 100CC of sulfuric acid. In this example, the working voltage of the capacitor is designed to be 40V, the measured capacity is 6mF, the internal resistance is 0.78Ω, and the energy storage density is 1.03J / cm 3 .

[0018] This example should not be construed as a limitation of the present invention, and all inventions realized by other formal modifications, replacements or changes based on the technical idea of ​​the present invention belon...

Embodiment 2

[0020] The hybrid supercapacitor internally uses three units connected in parallel. The manufacturing method of the units is the same as that in Embodiment 1, and the units are stacked in parallel and separated by insulating partitions 9 of glass fiber cloth. The three cathodes do not need to be physically connected, they are connected through the electrolyte, and finally lead out from the cathode lead 7, and the three anodes are connected through the internal connection 8, and finally lead out from the anode lead 1. The glass insulator 10 insulates the anode lead 1 from the casing 6, and the cathode lead 7 is connected to the casing 6; in this embodiment, the unit operating voltage is 40V, the measured capacity is 18.4mF, the internal resistance is 0.25Ω, and the energy storage density is 1.16J / cm 3 .

Embodiment 3

[0022] 30g of RuCl 3 ·xH 2 Dissolve O in distilled water to obtain a 0.1mol / L solution; add 0.3mol / L NaOH solution slowly to RuCl 3 ·xH 2 In the O solution, the pH of the solution is strictly controlled to be 7. The resulting black RuO 2 ·xH 2 O particles were filtered, rinsed several times with distilled water, and then dehydrated at 100° C. for 10 hours to obtain amorphous hydrated ruthenium dioxide. The hydrated ruthenium dioxide powder was mixed with absolute ethanol, carbon black conductive agent and polytetrafluoroethylene binder in a mass ratio of 90:4:3:3, and pressed into an electrode film with a thickness of 0.2 mm. The measured specific capacity of the electrode was 736F / g, and the internal resistance was 0.82Ω.

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Abstract

The related mixed super capacitor comprises: using Ta and RuO2 as the anode and cathode respective; filling H2SO4 electrolyte to form the electrolytic capacitor with anode and the electrochemical capacitor with cathode in series, respectively. This invention increases working voltage and energy storage density, overcomes defects in prior art, and can be used in the impulse power system.

Description

technical field [0001] The invention belongs to the technical field of high-power electronic devices, and relates to a hybrid supercapacitor and a preparation method thereof. In particular, it relates to a supercapacitor which can increase the working voltage of the unit and adopts the technique of parallel connection of 1 to 5 units inside. Background technique [0002] A supercapacitor is an energy storage element with a high energy storage density between an electrostatic capacitor and a battery. The difference between it and the traditional electrostatic capacitor is that the mechanism of storing charge is different. Electrostatic capacitors store charges through the polarization of the medium. Usually, their energy storage density is low, but their power density is high, and they can store or release charges quickly; while supercapacitors store charges through ion migration, and their capacitance and storage capacity The energy density is extremely high. It is precis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/04H01G9/035H01M14/00H01M10/00
CPCY02E60/12Y02E60/13
Inventor 张莉邹积岩宋金岩
Owner DALIAN UNIV OF TECH
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