Tailoring Mixed Ionic Electronic Conducting nano-particle size through desiccation and/or doped ceria oxide pre-infiltration

T. E. Burye, J. D. Nicholas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Mixed Ionic Electronic Conducting (MIEC) multi-cation oxide nano-particles are commonly used to enhance the performance of Solid Oxide Fuel Cell (SOFC) Nano-Composite Cathodes (NCCs) electrodes. The average MIEC NCC particle size produced by the infiltration method are typically 50-60 nm in diameter and result in SOFC operating temperatures in excess of 600°C. Since particle size directly correlates with the surface area available for oxygen incorporation and hence NCC performance, the objective of this study was to determine if infiltrate particle size could be reduced through nitrate gel desiccation and/or the pre-infiltration of a nitrate decomposition catalyst. For the La0.6Sr0.4Co0.8Fe0.2O 3-δ (LSCF) infiltrate particles examined here, average particle sizes were reduced from 50 nm to 20 nm using both processing techniques. These reduced LSCF particle sizes lowered the 550°C NCC polarization resistance from 0.33 Ωcm2 to 0.16 Ωcm2 with desiccation and 0.33 Ωcm2 to 0.11 Ωcm2 with nitrate decomposition catalyst pre-infiltration.

LanguageEnglish (US)
Title of host publicationECS Transactions
PublisherElectrochemical Society Inc.
Pages85-91
Number of pages7
Volume61
Edition1
DOIs
StatePublished - 2014

Profile

Cerium compounds
Infiltration
Particle size
Cathodes
Oxides
Nitrates
Composite materials
Solid oxide fuel cells (SOFC)
Decomposition
Catalysts
Gels
Positive ions
Polarization
Electrodes
Oxygen
Processing
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Tailoring Mixed Ionic Electronic Conducting nano-particle size through desiccation and/or doped ceria oxide pre-infiltration. / Burye, T. E.; Nicholas, J. D.

ECS Transactions. Vol. 61 1. ed. Electrochemical Society Inc., 2014. p. 85-91.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Burye TE, Nicholas JD. Tailoring Mixed Ionic Electronic Conducting nano-particle size through desiccation and/or doped ceria oxide pre-infiltration. In ECS Transactions. 1 ed. Vol. 61. Electrochemical Society Inc.2014. p. 85-91. Available from, DOI: 10.1149/06101.0085ecst
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