Method for manufacturing electrically conductive macromolecules and solid state electrolytic capacitor using electrically conductive macromolecules
View Patent ↗The method for manufacturing electrically conductive macromolecules of the present invention is provided by reacting at least a monomer and an oxidizing agent to obtain electrically conductive macromolecules by a chemical polymerization method, the method including reacting the monomer and the oxidizing agent at least in a polymerizing vessel that contains a steam atmosphere. With this method, it is possible to obtain flat, electrically conductive macromolecules ( 10 ). Thus, it is possible to provide a method and an apparatus for manufacturing electrically conductive macromolecules in which it is possible to combine both low ESR and high capacity in a solid state electrolytic capacitor, realize low losses, and have low current leakage.
1. A method for manufacturing electrically conductive macromolecules by a chemical polymerization method, the method comprising:
a polymerization process of reacting a monomer and an oxidizing agent; and
a chemical oxidation polymerization process performed in a polymerizing vessel that contains steam atmosphere, after the polymerization process.
2. The method for manufacturing electrically conductive macromolecules according to claim 1 ,
wherein the polymerization process is performed at 60° C. or lower.
3. The method for manufacturing electrically conductive macromolecules according to claim 1 ,
wherein the temperature of the steam atmosphere is at least 105° C.
4. The method for manufacturing electrically conductive macromolecules according to claim 1 ,
wherein steam concentration in the stream atmosphere is at least 10 vol %.
5. The method for manufacturing electrically conductive macromolecules according to claim 1 ,
wherein concentration of oxygen in the steam atmosphere is lower than 21 vol %.
6. The method for manufacturing electrically conductive macromolecules according to claim 1 ,
wherein the monomer is at least one selected from pyrrole, thiophene, 3,4-ethylenedioxythiophene, aniline and derivatives of these.
7. The method for manufacturing electrically conductive macromolecules according to claim 1 ,
wherein the oxidizing agent is at least one selected from manganese oxide, iron (III) salts, copper (II) salts, hydrogen peroxide and persulfate salts.
8. The method for manufacturing electrically conductive macromolecules according to claim 1 ,
wherein the monomer and the oxidizing agent are at least dissolved in a water soluble solvent or water.
9. The method for manufacturing electrically conductive macromolecules according to claim 1 ,
wherein when observing a layer of the electrically conductive macromolecules from the side, a ratio d/L of a separation distance d of the electrically conductive macromolecular layer from a substrate, to a length L, is 0.02 or less.
10. A solid state electrolytic capacitor comprising:
an anodic conductor made from valve metal;
a dielectric layer formed on a surface of the anodic conductor; and
a solid state electrolyte that is formed on a surface of the dielectric layer and that includes an electrically conductive macromolecular layer;
wherein the electrically conductive macromolecular layer is formed by a chemical polymerization method, the method comprising:
a polymerization process of reacting a monomer and an oxidizing agent; and
a chemical oxidation polymerization process performed in a polymerizing vessel that contains a steam atmosphere, after the polymerization process.
11. The solid state electrolytic capacitor according to claim 10 ,
wherein the anodic conductor provides a porous body containing numerous fine pores.