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

Tsepin Tsai; Erica Perry; Scott Barnett

doi:10.1149/1.1837635

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

Tsepin Tsai^*, Erica Perry, Scott Barnett

^*Corresponding author for this work

MRC - Materials Research Center

Research output: Contribution to journal › Article › peer-review

121 Scopus citations

Abstract

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 μm thick Y-doped ceria (YDC) layer with a 1 to 1.5 μm thick Y-doped zirconia (YSZ) layer on the fuel side. The cathode/supports were La_0.85Sr_0.15MnO₃-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 ≈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.

Original language	English (US)
Pages (from-to)	L130-L132
Journal	Journal of the Electrochemical Society
Volume	144
Issue number	5
DOIs	https://doi.org/10.1149/1.1837635
State	Published - May 1997

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry
Surfaces, Coatings and Films
Electrochemistry
Renewable Energy, Sustainability and the Environment

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/1.1837635

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title = "Low-temperature solid-oxide fuel cells utilizing thin bilayer electrolytes",

abstract = "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 μm thick Y-doped ceria (YDC) layer with a 1 to 1.5 μm 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 ≈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.",

author = "Tsepin Tsai and Erica Perry and Scott Barnett",

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T1 - Low-temperature solid-oxide fuel cells utilizing thin bilayer electrolytes

AU - Tsai, Tsepin

AU - Perry, Erica

AU - Barnett, Scott

PY - 1997/5

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N2 - 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 μm thick Y-doped ceria (YDC) layer with a 1 to 1.5 μm 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 ≈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.

AB - 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 μm thick Y-doped ceria (YDC) layer with a 1 to 1.5 μm 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 ≈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.

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

Abstract

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