Toward Stabilizing Co3O4 Nanoparticles as an Oxygen Reduction Reaction Catalyst for Intermediate-Temperature SOFCs
Abstract
The oxygen reduction reaction (ORR) activity of a series of composite cathodes consisting of a porous Gd0.20Ce0.80O2-δ (GDC) scaffold infiltrated with Sr-, Co-, and Y-nitrate solutions has been systematically investigated in this study. The results show that such infiltrated cathodes if calcined at low temperatures such as 350°C exhibit low polarization resistance (RP) in the temperature range of 450–700°C, even though XRD analysis reveals that the calcined product is virtually a mixture of Co3O4 and SrCO3. A further study by design-of-experiment suggests that the true ORR-active species is Co3O4, whereas SrCO3 serves as a sintering inhibitor to preserve the high surface area of Co3O4. The findings and understanding in this study present a new strategy for future development of active cathodes for intermediate-temperature solid oxide fuel cells (SOFCs).
- Authors:
-
[2];
- Univ. of South Carolina, Columbia, SC (United States). Department of Mechanical Engineering
- Univ. of Pennsylvania, Philadelphia, PA (United States). Department of Chemical and Biomolecular Engineering
- Publication Date:
- Research Org.:
- Univ. of South Carolina, Columbia, SC (United States)
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1424749
- Grant/Contract Number:
- AR0000492; FE0023317
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the Electrochemical Society
- Additional Journal Information:
- Journal Volume: 164; Journal Issue: 10; Journal ID: ISSN 0013-4651
- Publisher:
- The Electrochemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; coarsening; cobalt oxide; oxygen electrocatalysis; sintering resistance; solid oxide fuel cell
Citation Formats
Ren, Yaoyu, Cheng, Yuan, Gorte, Raymond J., and Huang, Kevin. Toward Stabilizing Co3O4 Nanoparticles as an Oxygen Reduction Reaction Catalyst for Intermediate-Temperature SOFCs. United States: N. p., 2017.
Web. doi:10.1149/2.0011710jes.
Ren, Yaoyu, Cheng, Yuan, Gorte, Raymond J., & Huang, Kevin. Toward Stabilizing Co3O4 Nanoparticles as an Oxygen Reduction Reaction Catalyst for Intermediate-Temperature SOFCs. United States. https://doi.org/10.1149/2.0011710jes
Ren, Yaoyu, Cheng, Yuan, Gorte, Raymond J., and Huang, Kevin. Wed .
"Toward Stabilizing Co3O4 Nanoparticles as an Oxygen Reduction Reaction Catalyst for Intermediate-Temperature SOFCs". United States. https://doi.org/10.1149/2.0011710jes. https://www.osti.gov/servlets/purl/1424749.
@article{osti_1424749,
title = {Toward Stabilizing Co3O4 Nanoparticles as an Oxygen Reduction Reaction Catalyst for Intermediate-Temperature SOFCs},
author = {Ren, Yaoyu and Cheng, Yuan and Gorte, Raymond J. and Huang, Kevin},
abstractNote = {The oxygen reduction reaction (ORR) activity of a series of composite cathodes consisting of a porous Gd0.20Ce0.80O2-δ (GDC) scaffold infiltrated with Sr-, Co-, and Y-nitrate solutions has been systematically investigated in this study. The results show that such infiltrated cathodes if calcined at low temperatures such as 350°C exhibit low polarization resistance (RP) in the temperature range of 450–700°C, even though XRD analysis reveals that the calcined product is virtually a mixture of Co3O4 and SrCO3. A further study by design-of-experiment suggests that the true ORR-active species is Co3O4, whereas SrCO3 serves as a sintering inhibitor to preserve the high surface area of Co3O4. The findings and understanding in this study present a new strategy for future development of active cathodes for intermediate-temperature solid oxide fuel cells (SOFCs).},
doi = {10.1149/2.0011710jes},
journal = {Journal of the Electrochemical Society},
number = 10,
volume = 164,
place = {United States},
year = {Wed Apr 05 00:00:00 EDT 2017},
month = {Wed Apr 05 00:00:00 EDT 2017}
}
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Works referencing / citing this record:
Enhanced catalytic activity of nanostructured, A-site deficient (La 0.7 Sr 0.3 ) 0.95 (Co 0.2 Fe 0.8 )O 3−δ for SOFC cathodes
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