Modification of a first-generation solid oxide fuel cell cathode with Co<inf>3</inf>O<inf>4</inf> nanocubes having selectively exposed crystal planes

Xu, X; Wang, C; Fronzi, M; Liu, X; Bi, L; Zhao, XS

Modification of a first-generation solid oxide fuel cell cathode with Co<inf>3</inf>O<inf>4</inf> nanocubes having selectively exposed crystal planes

Xu, X Wang, C Fronzi, M

Liu, X Bi, L Zhao, XS

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Publication Type:: Journal Article
Citation:: Materials for Renewable and Sustainable Energy, 2019, 8 (3)
Issue Date:: 2019-09-01

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Field	Value	Language
dc.contributor.author	Xu, X	en_US
dc.contributor.author	Wang, C	en_US
dc.contributor.author	Fronzi, M https://orcid.org/0000-0001-7855-9216	en_US
dc.contributor.author	Liu, X	en_US
dc.contributor.author	Bi, L	en_US
dc.contributor.author	Zhao, XS	en_US
dc.date.issued	2019-09-01	en_US
dc.identifier.citation	Materials for Renewable and Sustainable Energy, 2019, 8 (3)	en_US
dc.identifier.issn	2194-1459	en_US
dc.identifier.uri	http://hdl.handle.net/10453/136938
dc.description.abstract	© 2019, The Author(s). Co3O4 nanocubes with exposed (001) planes were prepared and employed for use as first-generation Sr-doped LaMnO3 (LSM) cathodes in solid oxide fuel cells to improve the cell performance. Theoretical simulations suggest that the Co3O4 (001) plane has the smallest oxygen adsorption and oxygen dissociation energies compared with other planes, thus favouring cathode reactions in solid oxide fuel cells (SOFCs). Experimental studies consistently demonstrate that a cell using an LSM cathode made with Co3O4 nanocubes with selective (001) surfaces exhibits a peak power density of 500 mW cm−2 at 600 °C, while the power output for a cell using unselective (commercial) Co3O4 nanoparticles is only 179 mW cm−2 at the same temperature. The electrochemical study indicates that the use of Co3O4 nanoparticles with exposed (001) surfaces obviously accelerates the cathode reactions and thus decreases the polarisation resistance, which is the key to improving fuel cell performance. This study demonstrates the feasibility of using the crystal planes of metal oxides to improve the fuel cell performance and provides a new way to design SOFC cathodes.	en_US
dc.relation.ispartof	Materials for Renewable and Sustainable Energy	en_US
dc.relation.isbasedon	10.1007/s40243-019-0154-z	en_US
dc.title	Modification of a first-generation solid oxide fuel cell cathode with Co<inf>3</inf>O<inf>4</inf> nanocubes having selectively exposed crystal planes	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	8	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	1007 Nanotechnology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	open_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	8	en_US

Abstract:

© 2019, The Author(s). Co3O4 nanocubes with exposed (001) planes were prepared and employed for use as first-generation Sr-doped LaMnO3 (LSM) cathodes in solid oxide fuel cells to improve the cell performance. Theoretical simulations suggest that the Co3O4 (001) plane has the smallest oxygen adsorption and oxygen dissociation energies compared with other planes, thus favouring cathode reactions in solid oxide fuel cells (SOFCs). Experimental studies consistently demonstrate that a cell using an LSM cathode made with Co3O4 nanocubes with selective (001) surfaces exhibits a peak power density of 500 mW cm−2 at 600 °C, while the power output for a cell using unselective (commercial) Co3O4 nanoparticles is only 179 mW cm−2 at the same temperature. The electrochemical study indicates that the use of Co3O4 nanoparticles with exposed (001) surfaces obviously accelerates the cathode reactions and thus decreases the polarisation resistance, which is the key to improving fuel cell performance. This study demonstrates the feasibility of using the crystal planes of metal oxides to improve the fuel cell performance and provides a new way to design SOFC cathodes.

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http://hdl.handle.net/10453/136938