Increased solid-oxide fuel cell power density using interfacial ceria layers

Tsepin Tsai; Scott A. Barnett

doi:10.1016/s0167-2738(97)00113-6

Increased solid-oxide fuel cell power density using interfacial ceria layers

Tsepin Tsai, Scott A. Barnett^*

^*Corresponding author for this work

MRC - Materials Research Center

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

143 Scopus citations

Abstract

Solid-oxide fuel cell power densities typically drop rapidly as the operating temperature is decreased, due to electrolyte ohmic losses and/or electrode overpotentials. In this paper, we describe fuel cells utilizing 8 μm thick yttria-stabilized zirconia (YSZ) electrolytes to provide low ohmic loss. Adding thin porous yttria doped ceria (YDC) layers on either side of the YSZ yielded much-reduced interfacial resistances at both the LSM cathodes and Ni-YSZ anodes. The cells provide higher power densities than previously reported below 700°C, e.g. 300 and 480 mW cm^-2 at 600 and 650°C, respectively (measured in 97%H₂ + 3%H₂O and air), and also provide high power densities at higher temperatures, e.g. 760 mW cm^-2 at 750°C.

Original language	English (US)
Pages (from-to)	191-196
Number of pages	6
Journal	Solid State Ionics
Volume	98
Issue number	3-4
DOIs	https://doi.org/10.1016/s0167-2738(97)00113-6
State	Published - Jun 2 1997

Funding

The authors gratefully acknowledge the financial support of the Electric Power Research Institute and the Gas Research Institute.

Keywords

Cathode
Fuel cell
Yttria-doped ceria

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/s0167-2738(97)00113-6

Cite this

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title = "Increased solid-oxide fuel cell power density using interfacial ceria layers",

abstract = "Solid-oxide fuel cell power densities typically drop rapidly as the operating temperature is decreased, due to electrolyte ohmic losses and/or electrode overpotentials. In this paper, we describe fuel cells utilizing 8 μm thick yttria-stabilized zirconia (YSZ) electrolytes to provide low ohmic loss. Adding thin porous yttria doped ceria (YDC) layers on either side of the YSZ yielded much-reduced interfacial resistances at both the LSM cathodes and Ni-YSZ anodes. The cells provide higher power densities than previously reported below 700°C, e.g. 300 and 480 mW cm-2 at 600 and 650°C, respectively (measured in 97%H2 + 3%H2O and air), and also provide high power densities at higher temperatures, e.g. 760 mW cm-2 at 750°C.",

keywords = "Cathode, Fuel cell, Yttria-doped ceria",

author = "Tsepin Tsai and Barnett, {Scott A.}",

note = "Funding Information: The authors gratefully acknowledge the financial support of the Electric Power Research Institute and the Gas Research Institute. ",

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AU - Tsai, Tsepin

AU - Barnett, Scott A.

N1 - Funding Information: The authors gratefully acknowledge the financial support of the Electric Power Research Institute and the Gas Research Institute.

PY - 1997/6/2

Y1 - 1997/6/2

N2 - Solid-oxide fuel cell power densities typically drop rapidly as the operating temperature is decreased, due to electrolyte ohmic losses and/or electrode overpotentials. In this paper, we describe fuel cells utilizing 8 μm thick yttria-stabilized zirconia (YSZ) electrolytes to provide low ohmic loss. Adding thin porous yttria doped ceria (YDC) layers on either side of the YSZ yielded much-reduced interfacial resistances at both the LSM cathodes and Ni-YSZ anodes. The cells provide higher power densities than previously reported below 700°C, e.g. 300 and 480 mW cm-2 at 600 and 650°C, respectively (measured in 97%H2 + 3%H2O and air), and also provide high power densities at higher temperatures, e.g. 760 mW cm-2 at 750°C.

AB - Solid-oxide fuel cell power densities typically drop rapidly as the operating temperature is decreased, due to electrolyte ohmic losses and/or electrode overpotentials. In this paper, we describe fuel cells utilizing 8 μm thick yttria-stabilized zirconia (YSZ) electrolytes to provide low ohmic loss. Adding thin porous yttria doped ceria (YDC) layers on either side of the YSZ yielded much-reduced interfacial resistances at both the LSM cathodes and Ni-YSZ anodes. The cells provide higher power densities than previously reported below 700°C, e.g. 300 and 480 mW cm-2 at 600 and 650°C, respectively (measured in 97%H2 + 3%H2O and air), and also provide high power densities at higher temperatures, e.g. 760 mW cm-2 at 750°C.

KW - Cathode

KW - Fuel cell

KW - Yttria-doped ceria

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Increased solid-oxide fuel cell power density using interfacial ceria layers

Abstract

Funding

Keywords

ASJC Scopus subject areas

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