Low-temperature solid-oxide fuel cells utilizing thin bilayer electrolytes

Solid-oxide fuel cells (SOFCs) with electrolytes that provide high open-circuit voltage (OCV) and low ohmic loss down to 550 C are described. The electrolytes were bilayers consisting of a 4 to 8 micron thick Y-doped ceria (YDC) layer with a 1 to 1.5 micron thick Y-doped zirconia (YSZ) layer on the...

Full description

Saved in:
Bibliographic Details
Published inJournal of the Electrochemical Society Vol. 144; no. 5; pp. L130 - L132
Main Authors TSAI, T, PERRY, E, BARNETT, S
Format Journal Article
LanguageEnglish
Published Pennington, NJ Electrochemical Society 01.05.1997
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cells
Cerium Oxides
Electrolyte
Zirconium Oxides
Electrode material
Performance
Solid oxide fuel cell
Low temperature
Online AccessGet full text

Cover

More Information
Summary:Solid-oxide fuel cells (SOFCs) with electrolytes that provide high open-circuit voltage (OCV) and low ohmic loss down to 550 C are described. The electrolytes were bilayers consisting of a 4 to 8 micron thick Y-doped ceria (YDC) layer with a 1 to 1.5 micron thick Y-doped zirconia (YSZ) layer on the fuel side. The cathode/supports were La0.85Sr0.15MnO3-YSZ. The anodes consisted of thin YDC and Ni-YSZ layers. The YDC/YSZ electrolyte SOFCs yielded 85 to 98% of the theoretical OCV, compared with about 50% for YDC electrolyte SOFCs. The cathode overpotential, which was a main factor limiting SOFC power density, was lower for YDC/YSZ than YSZ electrolytes. The maximum power density at 600 C, 210 mW/cm2, is higher than for previously reported SOFCs. 21 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0013-4651
1945-7111
DOI:10.1149/1.1837635