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:
Jul. 15, 2008
Filed:
Dec. 21, 2005
Nigel T Hart, Derby, GB;
Gary J Wright, Derby, GB;
Gerard D Agnew, Derby, GB;
Mark Cassidy, Sunnyvale, CA (US);
Nigel T Hart, Derby, GB;
Gary J Wright, Derby, GB;
Gerard D Agnew, Derby, GB;
Mark Cassidy, Sunnyvale, CA (US);
Rolls-Royce plc, London, GB;
Abstract
A solid oxide fuel cell () comprises an anode electrode (), a cathode electrode () and an electrolyte () between the anode electrode () and the cathode electrode (). A gaseous fuel is supplied to an anode chamber () partially defined by the anode electrode () and a gaseous oxidant is supplied to a cathode chamber () partially defined by the cathode electrode (). The electrolyte () comprises a first dense non-porous layer (), a second porous layer () on the first dense non-porous layer () and a third dense non-porous layer () on the second porous layer (). The anode electrode () is arranged on the first dense non-porous layer () and the cathode electrode () is arranged on the third dense non-porous layer (). The second porous layer () acts as a buffer between the first dense non-porous layer () and the third dense non-porous layer () to prevent defects propagating between the layers () and to prevent fuel and oxidant leaking through the electrolyte ().