Complementary forming solution and its application

One solution and another technology, applied in the direction of surface reaction electrolytic coating, anodizing, electrolytic coating, etc., can solve the problems of low polymer product yield, unsatisfactory filling effect, unstable product properties, etc.

Inactive Publication Date: 2007-07-18
宁夏星日电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve this problem, different manufacturers use different forming solutions and different materials. Regardless of whether organic acids or inorganic acids are used, no matter what concentration of solution is used, the forming effect is always unsatisfactory, and the problem cannot be solved. Effective solution, resulting in low yield of polymer products and unstable product properties
[0005] In the document CN1614725A published earlier, the applicant disclosed a method for manufacturing a solid niobium capacitor. In this method, a nitric acid solution and a phosphoric acid solution are used to alternately energize the formation method, but the formation method is not repeated repeatedly. Moreover, the formation method of this alternate empowerment increases the difficulty of the process and the labor intensity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The specific volume is 30000μF / g, and the 4.2×3.0×2.0 type tantalum powder sintered block is anodized in 0.1wt.% (weight percent) phosphoric acid solution, wherein the working voltage of anodization is 48v. After anodizing, the agglomerate is rinsed and dried.

[0019] Deposit and coat the polymer layer on the surface of the dielectric oxide layer by means of chemical polymerization; after the deposition of the polymer layer, use methanol or ethanol to clean the reaction by-products, and then in a mixed solution of 0.1% phosphoric acid and 0.1% sulfuric acid Complementary formation is carried out in the middle, and the applied supplementary forming voltage is 24v.

[0020] Then, the polymer coating, by-product rinsing and supplementary formation in the above steps were repeated six times. Next, "Electrodug 112" brand colloidal graphite produced by Acheson Industries was coated on the conductive polymer layer of the obtained semi-finished product, and next, "Dotite D-55...

Embodiment 2

[0022] In the above-mentioned embodiment 1, the forming process is carried out in a mixed solution of 5% phosphoric acid solution and 5% sulfuric acid solution, and other steps are the same as in embodiment 1.

Embodiment 3

[0024] In the above-mentioned embodiment 1, the forming process is carried out in a mixed solution of 0.1% phosphoric acid solution and 0.1% p-toluenesulfonic acid solution, and other steps are the same as in embodiment 1.

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PUM

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Abstract

A complementary formation solution is prepared as forming an entirely new complementary formation solution by mixing inorganic acid with inorganic acid or mixing inorganic acid with organic acid, enabling to used said complementary formation solution to achieve purpose of decreasing leakage current of solid polymer electrolytic capacitor.

Description

technical field [0001] The invention belongs to the technical field of electronic component manufacturing, in particular to a supplementary forming solution and its application in manufacturing solid polymer electrolytic capacitors. technical background [0002] With the development of various multimedia information processing devices towards miniaturization, high-speed processing and low power consumption, small components and highly integrated LSIC (high frequency, low voltage) circuits are required, and circuits are required to work intermittently. This puts forward a series of new requirements for the capacitors used. Especially for tantalum capacitors known for their miniaturization and large capacity, new requirements are put forward for low equivalent series resistance (ESR), low leakage current, low loss, good reliability and long life. [0003] In order to meet the performance requirements of capacitors in real life, especially the requirements for low leakage curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G13/00C25D11/06C25D11/08C25D11/10
Inventor 孙红杰贾廷庆董宁利罗春桃
Owner 宁夏星日电子有限公司
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