Novel solid-state capacitor and production method of the same

A production method and capacitor technology, applied in solid electrolytic capacitors, capacitor parts, electrolytic capacitor manufacturing, etc., can solve the problems of high resistance to ripple current, low capacitor ESR, and low withstand voltage, and achieve high resistance to ripple current. The effect of high value, low leakage current and high withstand voltage value

Active Publication Date: 2016-08-03
HUNAN AIHUA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the oxidizing agent will have a certain corrosiveness to the oxide film of the anode foil, it will make the solid capacitor have a lower withstand voltage value and a larger leakage current, but the PEDT prepared by this method has a higher conductivity, so the ESR of the capacitor Lower, higher ripple current resistance

Method used

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  • Novel solid-state capacitor and production method of the same

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Embodiment 1

[0028] Such as figure 1 A new type of solid capacitor is shown, including a core package sealed in the shell. The core package is wound by anode foil 1, non-carbonized electrolytic paper 3 and cathode foil 5. PEDT is attached to the electrolytic paper, and the electrolytic paper and the anode The foil and the space between the electrolytic paper and the cathode foil are filled with PEDT:PSS4.

[0029] The production method of the new solid capacitor in this embodiment includes the following steps: 1) impregnating the cut electrolytic paper in the conductive polymer monomer with a concentration of 1-40wt% (40wt% in this embodiment);

[0030] 2) Dry the electrolytic paper impregnated with conductive polymer;

[0031] 3) Immerse the dried electrolytic paper into an oxidant solution with a concentration of 10-70wt% (70wt% in this embodiment);

[0032] 4) Polymerize the electrolytic paper in step 3) in an environment with a temperature ranging from room temperature to 200°C for 1...

Embodiment 2

[0040] The production method of the novel solid capacitor of this embodiment includes the following steps, 1) immersing the cut electrolytic paper into a mixed solution of conductive polymer monomer and oxidant for 0.5-60 min; wherein the concentration of the conductive polymer monomer is 1 ~40wt%, oxidant concentration 10~70wt%;

[0041] 2) Polymerize the impregnated electrolytic paper in an environment with a temperature ranging from room temperature to 170°C for 1 to 48 hours, so that PEDT is polymerized on the electrolytic paper;

[0042] 3) The electrolytic paper polymerized with PEDT is wound together with the anode foil and the cathode foil into a core pack, and the core pack is immersed in the dispersion liquid of PEDT:PSS, so that PEDT:PSS is filled into the gap between the anode foil and the cathode foil void.

[0043] Other parts of this embodiment are the same as Embodiment 1.

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Abstract

The invention relates to a novel solid-state capacitor. The novel solid-state capacitor includes a piece of core cladding, wherein the core cladding is sealed in a housing, and is formed through winding of anode foils, non-carbonization electrolytic paper and cathode foils; PEDT are adhered to the electrolytic paper; and the gap between the electrolytic paper and the anode foils, and the gap between the electrolytic paper and the cathode foils are filled with PEDT: PSS. As the PEDT has higher conductivity, the novel solid-state capacitor is lower in ESR and higher in the resistant-to-ripple current value. As the PEDT: PSS is filled between the anode foils and cathode foils and the PEDT: PSS has no corrosivity on aluminium foils and the voltage withstanding value of the PEDT: PSS is higher, the voltage withstanding value of the novel solid-state capacitor is high and the leakage current of the novel solid-state capacitor is low.

Description

technical field [0001] The invention relates to a solid capacitor, in particular to a novel solid capacitor and a production method thereof. Background technique [0002] The electrolyte in the low-voltage solid capacitor is impregnated with the monomer, impregnated with the oxidant, and then polymerized into the interior of the capacitor. The space between the alumina and the cathode foil (including the interior of the porous electrolytic paper) in the figure is filled with chemical in-situ polymerization. Generated PEDT. Since the oxidizing agent has a certain corrosiveness to the oxide film of the anode foil, it will make the solid capacitor have a lower withstand voltage value and a larger leakage current, but the PEDT prepared by this method has a higher conductivity, so the ESR of the capacitor Lower, higher ripple current resistance. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/004H01G9/028H01G9/15
CPCH01G9/0036H01G9/004H01G9/028H01G9/151
Inventor 胡少强周世贤黎际宇张超黄家奇
Owner HUNAN AIHUA GRP
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