Improved ceramic anodes for SOFCs with modified electrode/electrolyte interface

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

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The electrode performance of solid oxide fuel cell anode with Pd nanoparticles at the interface of ScYSZ electrolyte and Sr0.94Ti0.9Nb0.1O3 (STN) electrode introduced in the form of metal functional layer have been investigated at temperatures below 600 °C. A metal functional layer consisting of Pd was deposited by magnetron sputtering. Effecting from heat treatments, Pd nanoparticles with particle sizes in the range of 5–20 nm were distributed at the interface, and throughout the backbone. The polarization resistance of the modified STN reduced to 30 Ωcm2 at 600 °C, which is three times less than an unmodified STN backbone. In order to improve the anode performance further, Pd and Gd-doped CeO2 electrocatalysts were infiltrated into the STN backbone. The modified interface with Pd nanoparticles in combination with nanostructured electrocatalyst by infiltration resulted in polarisation resistances of 0.35 Ωcm2 at 600 °C in H2/3% H2O fuel.
Original languageEnglish
JournalJournal of Power Sources
Publication date2012
Volume212
Pages247-253
ISSN0378-7753
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 3

Keywords

  • Metal functional layer, Palladium nanoparticles, Electrode/electrolyte interface, Pd–CGO electrocatalysts, Infiltrations, Low temperature SOFC anodes
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