Material characterization in support of the development of an anode substrate for solid oxide fuel cells

Simwonis, D; Naoumidis, A; Dias, FJ; Linke, J; Moropoulou, A

dc.contributor.author	Simwonis, D	en
dc.contributor.author	Naoumidis, A	en
dc.contributor.author	Dias, FJ	en
dc.contributor.author	Linke, J	en
dc.contributor.author	Moropoulou, A	en
dc.date.accessioned	2014-03-01T01:13:09Z
dc.date.available	2014-03-01T01:13:09Z
dc.date.issued	1997	en
dc.identifier.issn	0884-2914	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12338
dc.subject	Material Characterization	en
dc.subject	Solid Oxide Fuel Cell	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Anodes	en
dc.subject.other	Cermets	en
dc.subject.other	Electric resistance	en
dc.subject.other	Electrolytes	en
dc.subject.other	Optical microscopy	en
dc.subject.other	Particle size analysis	en
dc.subject.other	Porosity	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Substrates	en
dc.subject.other	Air permeability	en
dc.subject.other	Coat mix	en
dc.subject.other	Pore structure	en
dc.subject.other	Solid oxide fuel cells	en
dc.subject.other	Tape casting	en
dc.subject.other	Fuel cells	en
dc.title	Material characterization in support of the development of an anode substrate for solid oxide fuel cells	en
heal.type	journalArticle	en
heal.identifier.primary	10.1557/JMR.1997.0207	en
heal.identifier.secondary	http://dx.doi.org/10.1557/JMR.1997.0207	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	A new design for solid oxide fuel cells (SOFC's) was developed aiming at the reduction of the total electrical resistance of the cell. The thickness of the electrolyte was decreased, while the anode took on the role of the substrate. The pore structure with respect to gas permeability of this component has to be optimized for the proper operation of this design. Anode substrates, consisting of a cermet (yttrium-stabilized ZrO2 and metallic Ni) and produced by two different processes, coat mix and tape casting, were characterized with respect to pore structure (shape and mean radius), porosity (total, open and permeable), pore size distribution and air permeability. The following methods were used: (i) optical and electron scanning microscopy in combination with image analysis, (ii) mercury porosity, and (iii) air permeability. Correlations between air permeability and porosity and also the percentage of permeable pores in anodes show the superiority of coat mix samples to tape-cast ones. It has been observed that the coat mix process can produce anode substrates with interconnecting porosity, while tape casting, as used in this study, needs some modifications in order to be appropriate for this purpose.	en
heal.publisher	MATERIALS RESEARCH SOCIETY	en
heal.journalName	Journal of Materials Research	en
dc.identifier.doi	10.1557/JMR.1997.0207	en
dc.identifier.isi	ISI:A1997XC34400015	en
dc.identifier.volume	12	en
dc.identifier.issue	6	en
dc.identifier.spage	1508	en
dc.identifier.epage	1518	en