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Electrolytic condenser

A technology of electrolytic capacitors and electrolytes, which is applied to capacitor components, capacitor electrolytes/absorbents, etc., can solve the problems of increased resistivity and decreased contact of cathode foil, and achieves the effect of increased withstand voltage and small leakage current

Inactive Publication Date: 2002-11-27
SANYO CHEM IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, in a solid electrolytic capacitor using TCNQ salt as an electrolyte, when TCNQ is applied, the resistivity will increase, which will cause a problem of decreased contact with the cathode foil.

Method used

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Examples

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Embodiment 1

[0167] Between the anode aluminum foil and the cathode aluminum foil, a separator is interposed and crimped to obtain a capacitor core. This capacitor core is immersed in 5ml of water and ethanol (1:2) solution containing 0.5g of ethylene dihydroxythiophene and 2.0g of p-iron toluenesulfonate at room temperature for 10 minutes. Dry polymerization was carried out for 10 minutes, and this reaction was repeated 10 times. After forming a conductive polymer layer made of polyethylene dihydroxythiophene on the electrode foil, the capacitor element was subjected to water washing-dry cleaning (105° C., 10 minutes). Then this capacitor core is soaked in containing phthalic acid 1,2,3,4-tetramethylimidazolium salt 1g (phthalic acid: 1,2,3, the functional group equivalent ratio of 4-tetramethylimidazolium salt= 1:1) solution, thus obtaining an aluminum electrolytic capacitor core with a rated voltage of 50V and a capacitance of 220μF. Put the capacitor core into an aluminum metal box, ...

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PUM

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Abstract

The invention discloses an electrolytic capacitor, which is characterized in that conductive polymers and organic acid complex salts are used as electrolytes. The electrolytic capacitor has the following effects: (1) the leakage current is small, and the withstand voltage value is increased; (2) the impedance characteristic is excellent; (3) the stability is excellent; (4) it can be manufactured under simple engineering.

Description

technical field [0001] The invention relates to an electrolytic capacitor, especially an electrolytic capacitor using conductive polymer and organic acid complex salt. Background technique [0002] In recent years, along with the digitization of electronic devices, capacitors are required to be small in size, large in capacity, and have low impedance characteristics in the high frequency range. The capacitors used in the high-frequency field in the past were mostly plastic film capacitors and multilayer ceramic capacitors. Capacitors of this type usually have a large shape, and it is difficult to achieve a large capacity. On the other hand, as large-capacity capacitors, there are dry-type aluminum electrolytic capacitors, and aluminum or tantalum solid electrolytic capacitors. Such an electrolytic capacitor must form an anodized film (dielectric) on the surface of the anode with metal as the valve, and at the same time have an electrolyte that doubles as the cathode inside...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/022
Inventor 盐野和司池田宗加诸隈宗宏齐藤佳津代
Owner SANYO CHEM IND LTD
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