Patent · US Expired

Substituted poly(alkylenedioxythiophenes) as solid electrolytes in electrolytic capacitors

US7154740B2 · kind B2 · utility

58Cited by

8References

28Claims

0Family size

Assignee

H.C. STARCK INC. · US

Inventors

Udo Merker
Knud Reuter · Krefeld, DE
Klaus Lerch · Krefeld, DE

Key dates

Filing date	Aug 15, 2003
Grant date	Dec 26, 2006
Priority date	—
Expiry date	Aug 15, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/13
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Described is an electrolytic capacitor that includes: (a) a layer of an oxidizable metal; (b) a layer of an oxide of the oxidixable metal; (c) a solid electrolyte; and (d) a plurality of contacts. The solid electrolyte includes a polythiophene having recurring units represented by the following formulas (I-a) and/or (I-b),Also described are processes for producing electrolytic capacitors, and conductive layers that include such polythiophenes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.