Polymer based solid state capacitors and a method of manufacturing them
AssigneeAVX Corporation
InventorsMartin Biler, Zdenek Sita
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Abstract
The present invention relates to a solid state capacitor having a conductive polymer cathode layer counter electrode that includes an acrylate binder and a method for its manufacture. In particular the present invention relates to a solid state capacitor comprising: providing a porous anode body of valve action material; forming a dielectric layer on said porous body; forming a cathode layer in contact with the dielectric layer, which cathode layer comprises a conductive polymer and an acrylic binder; and providing an anode terminal in electrical connection with the porous body anode and a cathode terminal in electrical connection with the cathode layer and a method for its manufacture.
Claims21
A method of manufacturing a solid state capacitor comprising:
- providing a porous anode body of valve action material;
- forming a dielectric layer on said porous body;
- applying a composition to a surface of the dielectric layer, the composition containing a thiophene monomer and an acrylic polymer binder, wherein the binder is hydroxyethylmethacrylate;
- polymerizing the monomer to form a cathode layer that is in direct contact with said dielectric layer, which cathode layer comprises an intrinsically conductive thiophene polymer and the acrylic polymer binder;
- and
- providing an anode terminal in electrical connection with the porous body anode and a cathode terminal in electrical connection with the cathode layer.
A solid state capacitor comprising:
- a porous anode body of valve action material;
- a dielectric layer formed on said porous body;
- a cathode layer in direct contact with said dielectric layer, which cathode layer comprises an in situ polymerized conductive thiophene polymer and an acrylic polymer binder, wherein the binder is hydroxyethylmethacrylate;
- and
- an anode terminal in electrical connection with the porous body anode and a cathode terminal in electrical connection with the cathode layer.
Dependencies are inferred from the claim text.