Basf Aktiengesellschaft

Siemens Aktiengesellschaft

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Jochen Fricke

Manfred Mielke

Rainer Leuschner

Werner Ostertag

Guenther Seybold

Matthias Lipinski

Walther Glaubitt

Bernardo Wolff

Raino Petricevic

Roland Caps

Ulrich Schubert

Fritz Schwertfeger

Joachim Kuhn

Elisabeth Seyfried

Peer Loebmann

A thin, flat, and porous carbon gas diffusion electrode having a side in contact with a supply of gas and a side in contact with an electrolyte, comprises a pyrolysis product of a composite of an organic aerogel or xerogel and a reinforcing skeleton consisting at least in part of organic material. The porosity of the carbon gas diffusion electrode according to the invention can be regulated at will while the surface of the electrode is smooth.

Gas diffusion electrode and its production

A method of making porous ceramics of lead titanate (PT) or lead zirconate PZT) of a Pb(Zr.sub.x Ti.sub.1-x) O.sub.3 compound from a gel made by mixing at least 2.5 equivalents of water based on the compound with a solution prepared from a polar solvent having complexing and chelating properties, one or more Pb(II) and PB(IV) carboxylates and at least one compound including titanium and zirconium of the general formula M(OR).sub.4 where M is titanium or zirconium and R is similar or different groups representing at least one of a straight chain, cross-linked and cyclic alkyl and alkenyl group with 1 to 10 carbon atoms, aging the resulting gel beyond its gel point, replacing the solvent in the pores of the gel by a chelating solvent, drying the resulting gel under supercritical conditions and tempering the resulting aerogel.

Method of making porous ceramics of a Pb (Zr.sub.x Ti.sub.1-x) O.sub.3

SiO.sub.2 aerogels containing carbon particles are obtainable by heating

SiO.sub.2 aerogels containing carbon particles and their preparation

A thermal insulating material based on a pigment-containing silica aerogel is obtainable by

Thermal insulating material based on pigment containing silica aerogels

Growing community of inventors

Gerbrunn, Germany

Jochen Fricke