Nanostructured cathode thin films with vertically-aligned nanopores for thin film SOFC and their characteristics

Jongsik Yoon, Roy Araujo, Nicolas Grunbaum, Laura Baqué, Adriana Serquis, Alberto Caneiro, Xinghang Zhang, Haiyan Wang

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Nanostructured cathode thin films with vertically-aligned nanopores (VANP) were processed using a pulsed laser deposition technique (PLD). These VANP structures enhance the oxygen-gas phase diffusivity, thus improve the overall thin film SOFC performance. La0.5Sr0.5CoO3 (LSCO) and La0.4Sr0.6Co0.8Fe0.2O3 (LSCFO) were deposited on various substrates (YSZ, Si and pressed Ce0.9Gd0.1O1.95 disks). Microstructures and properties of the nanostructured cathodes were characterized by TEM, HRTEM, SEM and electrochemical measurements. Additionally these wellaligned VANP structures relieve or partially relieve the internal thermal stress and lattice strain caused by the differences of thermal expansion coefficients and lattice mismatch between the electrode and the electrolyte. © 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalApplied Surface Science
Volume254
Issue number1
Pages (from-to)266-269
ISSN0169-4332
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event13th International Conference on Solid Films and Surfaces - San Carlos de Bariloche, Argentina
Duration: 6 Nov 200610 Nov 2006
Conference number: 13

Conference

Conference13th International Conference on Solid Films and Surfaces
Number13
CountryArgentina
CitySan Carlos de Bariloche
Period06/11/200610/11/2006

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