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Method for improving capacity of inner wall of tantalum shell of non-solid electrolyte tantalum capacitor

A tantalum capacitor and electrolyte technology is applied in the field of increasing the capacity of the inner wall of the capacitor shell to achieve the effects of increasing the amount of adhesion, increasing the capacity of the cathode, and increasing the adhesion space

Pending Publication Date: 2022-01-25
CHINA ZHENHUA GRP XINYUN ELECTRONICS COMP ANDDEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two patents are to attach ruthenium dioxide to the tantalum shell by physical or chemical methods to increase the capacity, and there is a certain limit to the increase in the capacity of the capacitor cathode.

Method used

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  • Method for improving capacity of inner wall of tantalum shell of non-solid electrolyte tantalum capacitor
  • Method for improving capacity of inner wall of tantalum shell of non-solid electrolyte tantalum capacitor

Examples

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Effect test

Embodiment 1

[0023] A method of improving the inner wall capacity of a non-solid electrolyte tantalum capacitor tantalum housing, including the following steps:

[0024] (1) Clean the φ9.52 × 27.0 tantalum housing with deionized water, and then naturally cooled after drying in an oven of 125 ° C, and the drying time is 2 h;

[0025] (2) Select the corresponding mold to press the tantalum shell in step (1), and the thickness of the cathode bucket is 0.5 mm, resulting in a cathode bucket semi-finished product.

[0026] The tantalum powder is 20000 μF.v / g;

[0027] (3) The semi-finished product in step (2) is vacuum sintered, the sintering temperature is at 1000 ° C, the sintering time is 30 min, and the cathode bucket is tightly combined with the tantalum housing after sintering;

[0028] (4) Dissolving trichloride in deionized water is prepared into an electrolyte, and the HCl is added to adjust the pH to 3;

[0029] (5) Putting the electrolyte in the tantalum housing in the step (3);

[0030...

Embodiment 2

[0034] A method of improving the inner wall capacity of a non-solid electrolyte tantalum capacitor tantalum housing, including the following steps:

[0035] (1) Clean the φ7.14 × 16.3 tantalum housing with deionized water, and then naturally cooled after drying in an oven at 100 ° C, and the drying time is 2 h;

[0036] (2) Select the corresponding mold to press the tantalum shell in the step (1), and the thickness of the cathode bucket is 1.0 mm after molding;

[0037] The tantalum powder is 30000 μF.v / g.

[0038] (3) The semi-finished product in step (2) is vacuum sintering, the sintering temperature is at 1000 ° C, the sintering time is 50 min, and the cathode tub is tightly combined with the tantalum housing after sintering;

[0039] (4) Bromide is dissolved in deionized water to form an electrolyte, and the HCl is added to adjust the pH to 4;

[0040] (5) Putting the electrolyte in the tantalum housing in the step (3);

[0041] The electroplating is 30 mA / cm at a current ...

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Abstract

The invention belongs to the technical field of capacitor shell inner wall capacity improvement, and relates to a method for improving the capacity of the inner wall of a tantalum shell of a non-solid electrolyte tantalum capacitor. A cathode barrel formed by pressing tantalum powder is of a porous honeycomb structure and can serve as an attachment object of ruthenium dioxide, equivalently, the inner surface of the tantalum shell is increased, the attachment amount of ruthenium dioxide is increased, and therefore the purpose of increasing the capacity of the inner wall of the tantalum shell is achieved.

Description

Technical field [0001] The present invention belongs to the field of increasing the inner wall capacity of the capacitor housing, and in particular, the present invention relates to a method of improving the inner wall capacity of the non-solid electrolyte tantalum capacitor tantalum housing. Background technique [0002] With the increase in the demand for small-scale, large-capacity and other energy storage products, the demand for tantalum capacitor is increasing, such as more than 10000μF products, capacity capacity is equal to series of the anode capacity and cathode capacity, that is, c 总 (C) 阳极 × C 阴极 ) / (C 阳极 + C 阴极 , When the cathode capacity and the anode capacity are equal, the capacity of the capacitor is 50% of the anode capacity. When the cathode capacity is 10 times the anode capacity, the capacity of the capacitor is only 91% of the anode capacity, and when the cathode capacity is 50 times the anode capacity 50 times At the time, the capacity of the capacitor is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/048H01G9/00
CPCH01G9/048H01G9/0029H01G2009/05
Inventor 曾金萍杨槐香李传龙王成兴张勇石洪富董桂秀朱文娟蒙林斌艾文娟吴疆
Owner CHINA ZHENHUA GRP XINYUN ELECTRONICS COMP ANDDEV CO LTD
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