Kennouche, David Hong, Jongsup Noh, Ho-Sung Son, Ji-Won Barnett, Scott A. 2024-01-20T09:30:25Z 2024-01-20T09:30:25Z 2021-09-04 2014-08 1463-9076 https://pubs.kist.re.kr/handle/201004/126562 The Ni-yttria-stabilized zirconia (YSZ) anode functional layer in solid oxide fuel cells produced by pulsed laser-deposition was studied using three-dimensional tomography. Anode feature sizes of similar to 130 nm were quite small relative to typical anodes, but errors arising in imaging and segmentation were shown using a sensitivity analysis to be acceptable. Electrochemical characterization showed that these cells achieved a relatively high maximum power density of 1.4 W cm(-2) with low cell resistance at an operating temperature of 600 degrees C. The tomographic data showed anode three-phase boundary density of similar to 56 mu m(-2), more than 10 times the value observed in conventional Ni-YSZ anodes. Anode polarization resistance values, predicted by combining the structural data and literature values of three-phase boundary resistance in an electrochemical model, were consistent with measured electrochemical impedance spectra, explaining the excellent intermediate-temperature performance of these cells. English ROYAL SOC CHEMISTRY OXIDE FUEL-CELLS ELECTROLYTE COMPOSITE TEMPERATURE Three-dimensional microstructure of high-performance pulsed-laser deposited Ni-YSZ SOFC anodes Article 10.1039/c4cp02251c 1 PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.16, no.29, pp.15249 - 15255 PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16 29 15249 15255 scie scopus 000339173700024 2-s2.0-84903761097 Chemistry, Physical Physics, Atomic, Molecular & Chemical Chemistry Physics Article OXIDE FUEL-CELLS ELECTROLYTE COMPOSITE TEMPERATURE Thin film SOFC Nanostructure anode 3-D microstructure FIB PLD