Performance-Microstructure Relations in Ni/CGO Infiltrated Nb-doped SrTiO3 SOFC Anodes

Publication: Research - peer-reviewConference article – Annual report year: 2012

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Nb-doped SrTiO3 solid oxide fuel cell (SOFC) anodes, infiltrated with CGO/Ni, were investigated by electrochemical impedance spectroscopy (EIS) and high resolution microscopy techniques, upon varying production and testing parameters. The electrochemical analysis involved a combination of distribution of relaxation times (DRT) and complex non-linear least squares (CNLS) fitting routine. These electrodes were studied as singlephase or as composites with 8YSZ. Sr0.94Ti0.9Nb0.1O3-δ/ 10 vol.% 8YSZ composite infiltrated electrodes were the best overall performers, with enhanced performance stability under higher steam contents. Combined DRT/CNLS showed the existence of at least three contributing processes to the total polarisation resistance (Rp) of these electrodes. Microstructural changes involving infiltrate growth and redistribution were also confirmed.
Original languageEnglish
JournalE C S Transactions
Publication date2012
Volume45
Issue1
Pages389-402
ISSN1938-5862
DOIs
StatePublished

Conference

Conference221st ECS Meeting
CountryUnited States
CitySeattle, WA
Period06/05/1210/05/12
CitationsWeb of Science® Times Cited: No match on DOI
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