Solid-electrolytic capacitor and method for manufacturing solid-electrolytic capacitor
AssigneeTokin Corporation
InventorsGenki Koarashi, Masami Ishijima, Tadamasa Asami, Yasuhisa Sugawara
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Abstract
A solid-electrolytic capacitor according to an aspect of the present disclosure includes an anode member made of a valve metal, a dielectric layer formed on the anode member, and a solid electrolyte layer formed on the dielectric layer. The solid electrolyte layer includes a first electrolyte layer formed on the dielectric layer and a second electrolyte layer formed on the first electrolyte layer, in which the first electrolyte layer is an ion-conducting electrolyte layer and the second electrolyte layer is an electron-conducting electrolyte layer.
Claims11
A solid-electrolytic capacitor comprising:
- an anode member made of a valve metal;
- a dielectric layer formed on the anode member;
- and
- a solid electrolyte layer formed on the dielectric layer,
- wherein the solid electrolyte layer comprises:
- a first electrolyte layer formed on the dielectric layer;
- and
- a second electrolyte layer formed on the first electrolyte layer, and
- wherein the first electrolyte layer is an ion-conducting electrolyte layer, and the second electrolyte layer is an electron-conducting electrolyte layer.
A method for manufacturing a solid-electrolytic capacitor comprising:
- a first step of forming a dielectric layer on an anode member made of a valve metal;
- and
- a second step of forming a solid electrolyte layer on the dielectric layer,
- wherein the second step comprises:
- a third step of forming a first electrolyte layer on the dielectric layer;
- and
- a fourth step of forming a second electrolyte layer on the first electrolyte layer, and
- wherein the third step comprises forming a layer containing a material represented by the below-shown Formula (1) on the dielectric layer,
- where M in the above-shown Formula (1) represents a valve metal atom;
- R1+ represents a functional group of at least one type of cation selected from the group consisting of an imidazolium derivative, a pyrrolidinium derivative, a piperidinium derivative, a pyridinium derivative, a morpholinium derivative, an ammonium derivative, a phosphonium derivative, and a sulfonium derivative, and has a carbon chain having a carbon number of 1 to 20 between the functional group of the cation and a Si molecule, and has an ester bond, an ether bond, an amide bond, an imide bond, a carbon-carbon unsaturated bond, a carbon ring, or a heterocyclic ring between chains;
- in the above-shown Formula (1), R2 represents one of a hydrogen atom, a carbon chain having a carbon number of 1 to 4, a valve metal atom, or a multimer in which materials each represented by Formula (1) are condensation-polymerized and connected to each other by —Si—O—Si—;
- and
- in the above-shown Formula (1), X− represents at least one type of anion selected from chlorine, bromine, iodine, acetic acid, decanoic acid, sulfuric acid, lactic acid, nitric acid, benzoic acid, hydroxide, methylsulfate, methanesulfonic acid, ethanesulfonic acid, octanesulfonic acid, allylsulfonic acid, 1,1,2,2-tetrafluoroethanesulfonic acid, nonafluorobutanesulfonic acid, trifluoromethanesulfonic acid, p-toluenesulfonic acid, aminoacetic acid, trifluoroacetic acid, 2-hydroxy-2-phenylacetic acid, 2-aminopropanoic acid, thiosalicylic acid, thiocyanic acid, dicyanamide, dimethylphosphonic acid, diethylphosphonic acid, dibutylphosphonic acid, bis(2,4,4-trimethylpentyl)phosphonic acid, hexafluorophosphoric acid, tetrafluoroboric acid, hexafluoroantimonic acid, tetrachloroaluminic acid, tetrachloroferrate (III), tris(trifluoromethylsulfonyl)methane, bis(fluorosulfonyl)imide, bis(trifluoromethylsulfonyl)imide, and bis(pentafluoroethylsulfonyl)imide.
Dependencies are inferred from the claim text.