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Title: Advanced materials and design for low temperature SOFCs

Patent ·
OSTI ID:1253336
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Embodiments of the invention are directed to SOFC with a multilayer structure comprising a porous ceramic cathode, optionally a cathodic triple phase boundary layer, a bilayer electrolyte comprising a cerium oxide comprising layer and a bismuth oxide comprising layer, an anion functional layer, and a porous ceramic anode with electrical interconnects, wherein the SOFC displays a very high power density at temperatures below 700.degree. C. with hydrogen or hydrocarbon fuels. The low temperature conversion of chemical energy to electrical energy allows the fabrication of the fuel cells using stainless steel or other metal alloys rather than ceramic conductive oxides as the interconnects.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
Assignee:
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. (Gainesville, FL)
Patent Number(s):
9,343,746
Application Number:
13/124,164
OSTI ID:
1253336
Resource Relation:
Patent File Date: 2009 Oct 14
Country of Publication:
United States
Language:
English

References (7)

High-Performance Composite Bi[sub 2]Ru[sub 2]O[sub 7]–Bi[sub 1.6]Er[sub 0.4]O[sub 3] Cathodes for Intermediate-Temperature Solid Oxide Fuel Cells journal January 2008
Stable and high conductivity ceria/bismuth oxide bilayer electrolytes for lower temperature solid oxide fuel cells journal April 2006
Anode-Supported SOFCs with Y2O3-Doped Bi2O3 / Gd2O3-Doped CeO2 Composite Electrolyte Film journal February 2006
Detailed study on the role of oxygen vacancies in structural, magnetic and transport behavior of magnetic insulator: Co–CeO 2 journal November 2009
Stable high conductivity functionally gradient compositionally layered solid state electrolytes and membranes patent November 1999
Integrated SOFC patent May 2003
Solid Oxide Fuel Cell Having Internal Active Layers patent-application October 2007

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