H.c. Starck Gmbh

Klaus Lerch

Hady Seyeda

Karsten Beck

Bianca Agnes Balan

Knud Reuter

Udo Merker

A process for the production of a valve metal oxide powder, in particular an NbOor TaOpowder by continuous reaction of a fluoride-containing valve metal compound with a base in the presence of water and calcination of the resultant product, wherein the reaction is performed in just one reaction vessel and at a temperature of at least 45&#xb0; C. Valve metal oxide powders obtainable in said manner which exhibit a spherical morphology, a Dvalue of 10 to 80 &#x3bc;m and an elevated BET surface area.

Valve metal-oxide powder and method for producing said powder

Valve metal oxide powders and process for the production thereof

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.

Substituted poly(alkylenedioxythiophenes) as solid electrolytes in electrolytic capacitors

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Kaarst, Germany

Klaus Lerch