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A kind of all-solid aluminum electrolytic capacitor and its preparation method

An aluminum electrolytic capacitor, all-solid-state technology, applied in the direction of electrolytic capacitors, capacitors, capacitor parts, etc., can solve the problems of not being able to provide anodic oxide film, etc., and achieve improved conductivity, strong pressure tolerance, and wide operating temperature range Effect

Active Publication Date: 2022-06-21
NANTONG RUITAI ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the solid electrolyte has high conductivity, it cannot provide oxidizing ions to repair the damaged anodic oxide film, and its withstand voltage is only 1 / 3 or 1 / 4 of that of the liquid organic electrolyte.

Method used

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  • A kind of all-solid aluminum electrolytic capacitor and its preparation method
  • A kind of all-solid aluminum electrolytic capacitor and its preparation method

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Embodiment 1

[0025] like figure 1 As shown, the nanocomposite material of polyaniline PANi and PbTe was prepared by in-situ polymerization, and the nanocomposite film was obtained after hot pressing; %, 10% ammonium hypophosphite electrolyte, the solid-state nanocomposite membrane 3 containing anode aluminum foil repairing ions was prepared; 2 SiO 3 Prepare a pH=8 active silicon solution with acetic acid HAc, immerse the anode aluminum foil 1 in a mixed solution of aminomethyltriethoxysilane APS and a pH=8 active silicon solution for surface modification, and finally form siloxane on the anode aluminum foil 1 base surface modification layer 2; the solid nanocomposite film 3 containing the repairing ions of the anode aluminum foil and the anode aluminum foil 1 forming the siloxy surface modification layer 2 are assembled, and one side of the solid nanocomposite film 3 containing the repairing ions of the anode aluminum foil is sequentially The graphite layer 4 and the conductive silver pa...

Embodiment 2

[0027] A nanocomposite material of polyacetylene PA and carbon nanotubes was prepared by in-situ polymerization, and a nanocomposite film was obtained after hot pressing; Solid-state nanocomposite membrane 3 containing anode aluminum foil repairing ions was prepared in the electrolyte of 7% ammonium phosphate; sodium silicate Na 2 SiO 3 Prepare a pH=6.9 active silicon solution with acetic acid HAc, immerse the anode aluminum foil 1 in a mixed solution of aminomethyltriethoxysilane APS and a pH=6.9 active silicon solution for surface modification, and finally form siloxane on the anode aluminum foil 1 base surface modification layer 2; the solid nanocomposite film 3 containing the repairing ions of the anode aluminum foil and the anode aluminum foil 1 forming the siloxy surface modification layer 2 are assembled, and one side of the solid nanocomposite film 3 containing the repairing ions of the anode aluminum foil is sequentially The graphite layer 4 and the conductive silver...

Embodiment 3

[0029] Preparation of poly-3,4-ethylenedioxythiophene PEDOT and Bi by in situ polymerization 2 Te 3 The nanocomposite material obtained is obtained by hot pressing to obtain a nanocomposite film; the obtained nanocomposite film is immersed in an electrolyte containing 20% ​​of succinic acid, 75% of N,N-dimethylformamide, and 5% of ammonium hypophosphite by weight. Solid-state nanocomposite membrane 3 containing anode aluminum foil repairing ions was prepared in 3; sodium silicate Na 2 SiO 3 Prepare a pH=7.8 active silicon solution with acetic acid HAc, immerse the anode aluminum foil 1 in a mixed solution of aminomethyltriethoxysilane APS and a pH=7.8 active silicon solution for surface modification, and finally form siloxane on the anode aluminum foil 1 base surface modification layer 2; the solid nanocomposite film 3 containing the repairing ions of the anode aluminum foil and the anode aluminum foil 1 forming the siloxy surface modification layer 2 are assembled, and one ...

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Abstract

The invention relates to an all-solid aluminum electrolytic capacitor and a preparation method thereof. In the aluminum electrolytic capacitor, the electrolytic paper in a traditional capacitor is replaced by a solid nanocomposite film containing anode aluminum foil repair ions, and the anode aluminum foil with siloxy-coupling on the surface is used instead. Traditional anodized aluminum foil. Its preparation route includes preparing nanocomposite membranes by in-situ polymerization and introducing anode foil repair ions, performing siloxyl coupling on the surface of anode aluminum foils, and then combining graphite layers and conductive silver pastes to assemble into all-solid aluminum electrolytic capacitors. Compared with the prior art, the all-solid aluminum electrolytic capacitor provided by the present invention solves the problems of large leakage current, liquid leakage, poor temperature characteristics and short service life under extreme temperatures of the traditional aluminum electrolytic capacitor prepared with liquid organic electrolyte, and at the same time It also solves the problems of low flashover voltage and poor voltage resistance of solid aluminum electrolytic capacitors newly developed in recent years, and greatly improves the overall comprehensive performance of aluminum electrolytic capacitors.

Description

technical field [0001] The invention relates to the technical field of electronic chemical industry, in particular to an all-solid aluminum electrolytic capacitor and a preparation method thereof. Background technique [0002] Traditional aluminum electrolytic capacitors usually use liquid organic electrolytes. However, the system has a high resistivity, which makes the equivalent series resistance of the capacitor high, resulting in its high frequency impedance being too large. On the other hand, the performance of liquid organic electrolyte is greatly affected by temperature, and its resistivity will rise sharply with the decrease of temperature, which limits the use of capacitors at low temperature; its performance is extremely unstable at high temperature, and the increase of operating temperature High will lead to deterioration of the electrolyte and increase the vapor pressure to accelerate product failure and shorten the service life of the product. [0003] In rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/00H01G9/004H01G9/045
Inventor 原鲜霞闻一婵薛瑄武
Owner NANTONG RUITAI ELECTRONICS
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