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Solid electrolytic capacitor carbon rubber layer and manufacture method thereof

A solid electrolysis and capacitor technology, applied in the direction of solid electrolytic capacitors, electrolytic capacitors, capacitors, etc., can solve the problems of poor conductivity of the carbon glue layer and the thickness of the carbon glue layer, so as to reduce the carbon content and increase the bonding force. Effect

Active Publication Date: 2012-09-19
THE SIXTH ELEMENT CHANGZHOU MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the high carbon content in the carbon glue layer of the solid electrolytic capacitor in the prior art, the carbon glue layer is thick, and the carbon content is reduced, and the conductivity of the carbon glue layer is not good. The present invention utilizes the extremely excellent conductivity and huge specific surface area, select graphene to replace the mixture of graphite and carbon in the prior art

Method used

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  • Solid electrolytic capacitor carbon rubber layer and manufacture method thereof
  • Solid electrolytic capacitor carbon rubber layer and manufacture method thereof
  • Solid electrolytic capacitor carbon rubber layer and manufacture method thereof

Examples

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Embodiment 1

[0055] A method for preparing a solid electrolytic capacitor carbon glue layer, comprising the following preparation steps:

[0056] (1) Weigh a certain amount of graphene derived material powder produced by the method described in patent CN102070140A, place it in an agate mortar, and grind it evenly; the ground powder, organic solvent N,N-dimethylformamide (DMF) ) and the binder epoxy resin in parts by mass: graphene 5%; binder 30%; organic solvent 65% after mixing and stirring, ultrasonication for 30 minutes to obtain a uniformly dispersed black suspension;

[0057] (2) The electrode that needs to be coated with the carbon glue layer is covered with the graphene carbon glue layer by the dipping method in the graphene suspension;

[0058] (3) Pre-bake in an oven at 80°C for 10 minutes, and bake in an oven at 150°C for 30-60 minutes to cure.

[0059] (4) Test the resistivity of the carbon adhesive layer: coat a 10mm×40mm×25μm carbon adhesive layer film on the glass slide, pre...

Embodiment 2

[0062] A method for preparing a solid electrolytic capacitor carbon glue layer, comprising the following preparation steps:

[0063] (1) Weigh a certain amount of graphene-derived material powder produced by the method described in patent CN102070140A, place it in an agate mortar, and grind it evenly; the ground powder, organic solvent 1-methyl-2-pyrrolidone and bonding Agent polymethyl methacrylate in parts by mass: graphene 10%; binder 30%; organic solvent 60% after mixing and stirring, ultrasonication for 30 minutes to obtain a uniformly dispersed black suspension;

[0064] (2) The electrode that needs to be coated with the carbon glue layer is covered with the graphene carbon glue layer by the dipping method in the graphene suspension;

[0065] (3) Pre-bake in an oven at 80°C for 10 minutes, and bake in an oven at 150°C for 30-60 minutes to cure.

[0066] (4) Test the resistivity of the carbon adhesive layer: coat a 10mm×40mm×25μm carbon adhesive layer film on the glass s...

Embodiment 3

[0069] A method for preparing a solid electrolytic capacitor carbon glue layer, comprising the following preparation steps:

[0070] (1) Weigh a certain amount of graphene material powder, place it in an agate mortar, and grind it evenly; mix the ground powder, organic solvent dimethyl sulfoxide and binder acrylic resin according to the mass fraction: graphene 0.1% ; Binder 35%; Organic solvent 64.9% after mixing and stirring, ultrasonic for 30 minutes to obtain a uniformly dispersed black suspension;

[0071] (2) The electrode that needs to be coated with the carbon glue layer is covered with the graphene carbon glue layer by the dipping method in the graphene suspension;

[0072] (3) Pre-bake in a 60°C oven for 15 minutes, and bake in a 200°C oven for 100 minutes to cure.

[0073] (4) Test the resistivity of the carbon adhesive layer: coat a 10mm×40mm×25μm carbon adhesive layer film on the glass slide, pre-bake it in an oven at 80°C for 10min, then cure it in an oven at 150...

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Abstract

The invention relates to a manufacture method of a solid electrolytic capacitor carbon rubber layer, which comprises the steps of: immersing an electrode needing coating a carbon rubber layer into an emulsion containing a conductive nonmetal, a binding agent and an organic solvent, and curing to obtain the carbon rubber layer, wherein the conductive nonmetal is a graphene material. According to the solid electrolytic capacitor carbon rubber layer manufactured by adopting the manufacture method, the binding force of the carbon rubber layer and a silver paste layer is increased, the content of carbon in the solid electrolytic capacitor carbon rubber layer is reduced but the conduction property of the solid electrolytic capacitor carbon rubber layer is not reduced, the contact resistance is reduced, and the heat resistance is increased, therefore, the solid electrolytic capacitor carbon rubber layer is suitable for massive popularization and application.

Description

technical field [0001] The invention relates to a solid electrolytic capacitor carbon adhesive layer and a preparation method thereof, in particular to a solid electrolytic capacitor carbon adhesive layer based on a graphene-derived material and a preparation method, in particular to a graphene-derived material as a conductive non-metallic A solid electrolytic capacitor electrode carbon glue layer and a preparation method thereof belong to the technical field of solid electrolytic capacitors Background technique [0002] Capacitance, also known as capacitance, refers to the amount of charge storage under a given potential difference, and is a physical quantity that characterizes the ability of a capacitor to hold charge. The amount of electricity required to increase the potential difference between the two plates of a capacitor by 1 volt is the capacitance of the capacitor. From a physical point of view, a capacitor is a static charge storage medium, like a bucket that can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/15
CPCH01G9/15H01G9/042C01B31/00
Inventor 丁兆龙王振中
Owner THE SIXTH ELEMENT CHANGZHOU MATERIALS TECH
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