Solid electrolyte tantalum-niobium composite capacitor and preparation method thereof

A composite capacitor, solid electrolyte technology, used in solid electrolytic capacitors, electrolytic capacitors, capacitors and other directions

Active Publication Date: 2012-02-08
ZHUZHOU HONGDA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, these patented technologies have not fundamentally solved the respective shortcomings of tantalum-niobium electrolytic capacitors, so it is necessary to further propose improvement measures

Method used

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  • Solid electrolyte tantalum-niobium composite capacitor and preparation method thereof
  • Solid electrolyte tantalum-niobium composite capacitor and preparation method thereof

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Embodiment 1

[0019] A method for preparing a solid electrolyte niobium-tantalum composite capacitor. The niobium-tantalum composite capacitor is prepared by mixing niobium and tantalum. First, tantalum powder and niobium powder or tantalum powder and pure niobium monoxide are mixed uniformly in a certain proportion, wherein the tantalum content is 5% to 95%, and the remaining content is niobium; then it is pressed and formed to obtain a composite metal anode block, and then vacuum sintered to obtain the anode of the composite capacitor. After electrochemical oxidation, a dielectric film of composite tantalum oxide and niobium oxide is formed to become the anode of the niobium-tantalum composite capacitor, and the cathode is made of solid manganese dioxide. The appearance of the product is similar to that of a chip-type solid electrolyte niobium-tantalum composite capacitor. The preparation method includes the steps of mixing, molding, sintering, energizing, and coating of tantalum powder an...

Embodiment 2

[0027] As shown in accompanying drawing 3 and accompanying drawing 4, a preparation method of a solid electrolyte niobium-tantalum composite capacitor is prepared by mixing niobium and tantalum to make a niobium-tantalum composite capacitor, using tantalum powder and niobium powder, or tantalum powder and pure monoxide The mixture of niobium mixed in a certain proportion is the anode material, and then it is prepared into an electrolytic capacitor. The preparation method includes the steps of mixing, molding, sintering, energizing, and coating of tantalum powder and niobium powder (or niobium monoxide); the specific preparation method is as follows:

[0028] 1. Mix tantalum powder and niobium powder or tantalum powder and pure niobium monoxide in a certain proportion, wherein the proportion of tantalum powder is controlled between 5% and 95%, and the rest is niobium powder or niobium monoxide powder;

[0029] 2. According to the total weight of tantalum powder and niobium powd...

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Abstract

The invention discloses a solid electrolyte tantalum-niobium composite capacitor and a preparation method thereof. The tantalum-niobium composite capacitor is prepared by mixing tantalum and niobium. The preparation method comprises the following steps: firstly, uniformly mixing tantalum power and niobium power or the tantalum power and pure columbium monoxide according to certain ratio, wherein the content of tantalum is 5-95 percent and the balance of niobium; pressing the mixture to form to obtain an anode block of compound metal; vacuum sintering to obtain an anode of the composite capacitor; electrochemically oxidizing the anode to form a medium film compounded by tantalum oxide and niobium oxide and using the medium film as the anode of the tantalum-niobium composite capacitor; and preparing the anode from solid manganese dioxide. The appearance of a product is similar to the appearance of the platy solid electrolyte tantalum-niobium composite capacitor. The preparation method comprises the working procedures of mixing, forming, sintering, energizing and enveloping the tantalum power and the niobium power or the columbium monoxide.

Description

technical field [0001] The invention relates to a preparation method of an electronic component, in particular to a preparation method of a solid electrolyte niobium-tantalum composite capacitor. It is a practical technical field for high-voltage electrical products. Background technique [0002] Tantalum and niobium belong to the same group of elements, both are valve metal materials, and their dielectric constants are 27 and 41, respectively, and can be used to make electrolytic capacitors. Tantalum capacitors are electrolytic capacitors processed with pure tantalum powder as the anode material, and niobium capacitors are electrolytic capacitors processed with pure niobium powder or pure niobium monoxide as the anode material. The advantage of tantalum capacitors is that their electrical properties are stable, but when the product is broken down, it will cause a short circuit, and it is easy to burn, causing damage to the electronic circuit of the circuit board. Niobium ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/15H01G9/042
Inventor 何明望曾继疆
Owner ZHUZHOU HONGDA ELECTRONICS
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