English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/181786
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Characterization of laser-processed thin ceramic membranes for electrolyte-supported solid oxide fuel cells

AuthorsCebollero, Jose Antonio; Lahoz, Ruth; Laguna-Bercero, M. A. ; Peña, J. I.; Larrea, A. ; Orera, V. M.
Solid electrolytes
Laser machining
Self-supporting ceramic membranes
Issue Date2017
CitationInternational Journal of Hydrogen Energy 42(19): 13939-13948 (2017)
AbstractBy laser machining we have prepared thin and self-supported yttria stabilized zirconia (YSZ) electrolytes that can be used in electrolyte-supported solid oxide fuel cells for reducing the operation temperature. The membranes, which are supported by thicker areas of the same material, have an active area of ∼20 μm in thickness and up to 8 mm in diameter. Buckling limits the maximum size of the thin areas to below 1 mm, the overall effective active area being formed by multiple thin areas bounded by ribs. Electron Backscattering Diffraction experiments determined that there are not significant strains inside the membranes and that the heat-affected zone is confined to a shallow layer of ∼1–2 μm. The bending strength of the membranes decreases by ∼26% as a result of the surface microcracking produced by the laser machining. The membranes have a roughness of ∼2.5 μm and are coated by a layer of nanoparticles produced by the laser ablation. This coating and small roughness is not detrimental for the cathodic polarization of the cells. Conversely, the cathode polarization resistance decreases ∼5% in the 650–850 °C temperature range.
Publisher version (URL)https://doi.org/10.1016/j.ijhydene.2016.12.112
Appears in Collections:(ICMA) Artículos
Files in This Item:
File Description SizeFormat 
Characterization para repositorio.pdf6,39 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.