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:
Dec. 23, 2003
Filed:
Sep. 20, 1999
Harald Landes, Rückersdorf, DE;
Franz Richter, Neunkirchen am Brand, DE;
Hermann Schichl, Lauf/Pegnitz, DE;
Abstract
A high temperature fuel cell has a cathode which comprises at least a first layer and a second layer disposed on one side of the first layer, in which the first layer contains 30 to 60% by weight of a first electrolyte made up of zirconium oxide ZrO and at least one proportion of scandium oxide Sc O , and the second layer comprises substoichiometric lanthanum strontium manganate having the formula La Sr MnO in which the sum of x and y is less than 1. By means of this, a high ionic conductivity is achieved for the cathode ( ). The ionic conductivity further remains substantially constant as a function of the operating time t.