Engineering Composite Oxide SOFC Anodes for Efficient Oxidation of Methane

Gael Corre; G. kim; J. T. S. Irvine; J. M. Vohs; R. J. Gorte

doi:10.1149/1.2817809

Engineering Composite Oxide SOFC Anodes for Efficient Oxidation of Methane

Gael Corre, G. kim, J. T. S. Irvine, J. M. Vohs, R. J. Gorte

Faculty of Life Sciences and Education

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

Abstract

Ceramic anodes for solid oxide fuel cells SOFCs were prepared by aqueous impregnation of nitrate salts to produce composites with 45 wt % La0.8Sr0.2Cr0.5Mn0.5O3 LSCM in a 65% porous yttria-stabilized zirconia YSZ scaffold. Scanning electron micrographs indicate that the LSCM coats the YSZ pores following calcination at 1473 K. Composites produced in this manner exhibit conductivities at 1073 K of approximately 1 S/cm in air and 0.1 S/cm in humidified H2. A SOFC with a composite anode composed of 45 wt % LSCM, 0.5 wt % Pd, and 5 wt % ceria exhibited maximum power densities at 1073 K of 1.1 and 0.71 W cm-2 in humidified 3% H2O H2 and methane, respectively.

Original language	English
Pages (from-to)	B16 - B19
Journal	Electrochemical and Solid-State Letters
Volume	11
Issue number	2
DOIs	https://doi.org/10.1149/1.2817809
Publication status	Published - 1 Feb 2008

Keywords

composite oxide
anodes
calcination
ceramics
chromium compounds
composite materials
electrical conductivity
lanthanum compounds
oxidation
scanning electron microscope
solid oxide fuel cells
strontium compounds
yttrium compounds
zirconium compounds

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title = "Engineering Composite Oxide SOFC Anodes for Efficient Oxidation of Methane",

abstract = "Ceramic anodes for solid oxide fuel cells SOFCs were prepared by aqueous impregnation of nitrate salts to produce composites with 45 wt % La0.8Sr0.2Cr0.5Mn0.5O3 LSCM in a 65% porous yttria-stabilized zirconia YSZ scaffold. Scanning electron micrographs indicate that the LSCM coats the YSZ pores following calcination at 1473 K. Composites produced in this manner exhibit conductivities at 1073 K of approximately 1 S/cm in air and 0.1 S/cm in humidified H2. A SOFC with a composite anode composed of 45 wt % LSCM, 0.5 wt % Pd, and 5 wt % ceria exhibited maximum power densities at 1073 K of 1.1 and 0.71 W cm-2 in humidified 3% H2O H2 and methane, respectively.",

keywords = "composite oxide, anodes, calcination, ceramics, chromium compounds, composite materials, electrical conductivity, lanthanum compounds, oxidation, scanning electron microscope, solid oxide fuel cells, strontium compounds, yttrium compounds, zirconium compounds",

author = "Gael Corre and G. kim and Irvine, {J. T. S.} and Vohs, {J. M.} and Gorte, {R. J.}",

year = "2008",

month = feb,

day = "1",

doi = "10.1149/1.2817809",

language = "English",

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journal = "Electrochemical and Solid-State Letters",

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TY - JOUR

T1 - Engineering Composite Oxide SOFC Anodes for Efficient Oxidation of Methane

AU - Corre, Gael

AU - kim, G.

AU - Irvine, J. T. S.

AU - Vohs, J. M.

AU - Gorte, R. J.

PY - 2008/2/1

Y1 - 2008/2/1

N2 - Ceramic anodes for solid oxide fuel cells SOFCs were prepared by aqueous impregnation of nitrate salts to produce composites with 45 wt % La0.8Sr0.2Cr0.5Mn0.5O3 LSCM in a 65% porous yttria-stabilized zirconia YSZ scaffold. Scanning electron micrographs indicate that the LSCM coats the YSZ pores following calcination at 1473 K. Composites produced in this manner exhibit conductivities at 1073 K of approximately 1 S/cm in air and 0.1 S/cm in humidified H2. A SOFC with a composite anode composed of 45 wt % LSCM, 0.5 wt % Pd, and 5 wt % ceria exhibited maximum power densities at 1073 K of 1.1 and 0.71 W cm-2 in humidified 3% H2O H2 and methane, respectively.

AB - Ceramic anodes for solid oxide fuel cells SOFCs were prepared by aqueous impregnation of nitrate salts to produce composites with 45 wt % La0.8Sr0.2Cr0.5Mn0.5O3 LSCM in a 65% porous yttria-stabilized zirconia YSZ scaffold. Scanning electron micrographs indicate that the LSCM coats the YSZ pores following calcination at 1473 K. Composites produced in this manner exhibit conductivities at 1073 K of approximately 1 S/cm in air and 0.1 S/cm in humidified H2. A SOFC with a composite anode composed of 45 wt % LSCM, 0.5 wt % Pd, and 5 wt % ceria exhibited maximum power densities at 1073 K of 1.1 and 0.71 W cm-2 in humidified 3% H2O H2 and methane, respectively.

KW - composite oxide

KW - anodes

KW - calcination

KW - ceramics

KW - chromium compounds

KW - composite materials

KW - electrical conductivity

KW - lanthanum compounds

KW - oxidation

KW - scanning electron microscope

KW - solid oxide fuel cells

KW - strontium compounds

KW - yttrium compounds

KW - zirconium compounds

U2 - 10.1149/1.2817809

DO - 10.1149/1.2817809

M3 - Article

SN - 1944-8775

VL - 11

SP - B16 - B19

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 2

ER -

Engineering Composite Oxide SOFC Anodes for Efficient Oxidation of Methane

Abstract

Keywords

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