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Method for increasing capacitor electrode superficial area

A capacitive electrode, surface area technology, applied in the direction of hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc., can solve problems such as difficulty in practical application, electrolyte decomposition, etc.

Active Publication Date: 2013-12-25
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this type of capacitor battery uses porous carbon as the electrode material, although the specific power of the device is improved at room temperature, the porous carbon will decompose the electrolyte at high temperature, making it difficult to put into practical use.

Method used

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  • Method for increasing capacitor electrode superficial area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0023] The electrode of the capacitor battery is prepared by the method provided in Example 1, and the fission fragments produced by the reactor are used to bombard the polymer film, the reactor power is 5-15 MW, and the irradiation time is 10-100 seconds. A large number of point pits are formed on the surface of the sample, the depth of the point pits is 0.1-20 μm, and the density is 1×10 5 ~1×10 10 / cm 2 , with a diameter of 0.1 to 9.0 μm. The nuclear pore membrane produced in this example was selected as the electrode, and the specific power was 4800W / Kg after performance testing.

Embodiment 3

[0025] The method provided in Example 1 was used to prepare a heavy-ion microporous membrane with a metal coating as an electrode of a capacitor battery, and the pit parameters after etching were changed. The technical indicators are shown in Table 1.

[0026] Table 1 Technical indicators of electrodes prepared with different pit parameters

[0027] Depth (μm)

Embodiment 4

[0029] The method provided in Example 1 was used to prepare a heavy ion microporous membrane with a metal coating as an electrode of a capacitor battery, and different metals were used as the metal coating. The technical indicators are shown in Table 2.

[0030] Table 2 Technical indicators of electrodes prepared with different metal coatings

[0031] Metal

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Abstract

The invention discloses a method for increasing capacitor electrode superficial area, namely a heavy ion microporous film or a nuclear core film with a metal coating is adopted as the electrode of a capacitor battery. The superficial area of the electrode made of the material can be increased by more than 1-20 times.

Description

technical field [0001] The invention belongs to the technical field of capacitor batteries, and relates to energy storage components including supercapacitors and lithium ion capacitors that require superlarge surface area electrodes, and in particular to a new method for manufacturing superlarge surface area electrodes. Background technique [0002] The capacitor battery belongs to the electric double layer capacitor, which is the largest capacity among the electric double layer capacitors that have been put into mass production in the world. Its basic principle is the same as that of other types of electric double layer capacitors. It is composed of activated carbon porous electrodes and electrolytes. The electric double layer structure obtains a super large capacity. It is an ideal green and environmentally friendly chemical power supply with fast charging speed, long cycle life, super high current discharge capacity, high power density, simple charging and discharging ci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/26
Inventor 刘永辉吴振东周书华傅元勇
Owner CHINA INSTITUTE OF ATOMIC ENERGY