The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2016
Filed:
Feb. 14, 2012
Marco Brandner, Oy-Mittelberg, DE;
Johannes Schmid, Lechaschau, AT;
Andreas Venskutonis, Reutte, AT;
Nikolai Trofimenko, Dresden, DE;
Viktar Sauchuk, Dresden, DE;
Mihails Kusnezoff, Dresden, DE;
Karin Lucke, Dresden, DE;
Alexander Michaelis, Dresden, DE;
Marco Brandner, Oy-Mittelberg, DE;
Johannes Schmid, Lechaschau, AT;
Andreas Venskutonis, Reutte, AT;
Nikolai Trofimenko, Dresden, DE;
Viktar Sauchuk, Dresden, DE;
Mihails Kusnezoff, Dresden, DE;
Karin Lucke, Dresden, DE;
Alexander Michaelis, Dresden, DE;
PLANSEE SE, Reutte, AT;
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich, DE;
Abstract
The invention relates to a layer structure which is formed between an interconnect and a cathode of a solid oxide fuel cell and can be used for forming a ceramic layer structure between an interconnect and a cathode. In this respect, the interconnect comprises a metal alloy containing chromium. The object of the present invention is to provide a layer structure between an interconnect and a cathode of a solid oxide fuel cell with which a good protective function (from corrosion and from chromium vaporization), a high electrical conductivity and also a good thermal expansion behavior adapted to the materials of an interconnect and of a cathode can be achieved. The layer structure in the green state is formed by a powdery spinel as well as at least one of the below-named metal oxides CuO, NiO, CoOand MnOas a sintering additive and at least one powdery perovskite. In this respect, chromium is not contained in any of these chemical compounds and the portion of spinel contained with the metal oxides as a sintering additive is reduced starting from the side facing the interconnect up to the side facing the cathode and the portion of perovskite is reduced starting from the side facing the cathode in the direction of the side facing the interconnect.