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Kim, Guntae
Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system, Catalyst for DRM


Investigation of the Structural and Catalytic Requirements for High-Performance SOFC Anodes Formed by Infiltration of LSCM

DC Field Value Language Kim, Guntae ko Lee, S. ko Shin, J. Y. ko Corre, G. ko Irvine, J. T. S. ko Vohs, J. M. ko Gorte, R. J. ko 2014-09-29T01:33:29Z - 2014-09-25 ko 2009 ko
dc.identifier.citation ELECTROCHEMICAL AND SOLID STATE LETTERS, v.12, no.3, pp.B48 - B52 ko
dc.identifier.issn 1099-0062 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Composites formed by infiltration of 45 wt % La(0.8)Sr(0.2)Cr(0.5)Mn(0.5)O(3) (LSCM) into a 65% porous yttria-stabilized zirconia (YSZ) scaffold were investigated in order to understand the reasons this material is able to provide excellent anode performance in solid oxide fuel cells (SOFCs). Scanning electron microscopy showed that the LSCM forms a film over the YSZ after calcination at 1473 K but that this film undergoes cracking to expose a long three-phase boundary after reduction at 1073 K. Coulometric titration demonstrated that the reduction of LSCM and La(0.8)Sr(0.2)MnO(3) occurred over a similar range of P(O(2)) and that reduction is the likely cause for film cracking. To achieve low anode impedances in humidified H(2) at 973 K, it was necessary to add a catalyst. The addition of 0.5-1 wt % Pd, Rh, or Ni was sufficient to increase the maximum power density of SOFCs with 60 mu m thick YSZ electrolytes to >500 mW/cm(2) in humidified H(2) at 973 K. The addition of either 1 wt % Fe or 5 wt % ceria also improved power densities but to a lesser extent. Finally, the use of Pt paste as the current collector increased performance to a similar extent as intentionally adding catalyst, showing the importance of using inert materials in electrode testing. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.subject OXIDE FUEL-CELL ko
dc.subject CERIA ko
dc.subject PD ko
dc.subject PEROVSKITE ko
dc.subject REDUCTION ko
dc.subject ZIRCONIA ko
dc.subject CATHODES ko
dc.subject YSZ ko
dc.subject CO2 ko
dc.title Investigation of the Structural and Catalytic Requirements for High-Performance SOFC Anodes Formed by Infiltration of LSCM ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-58149520427 ko
dc.identifier.wosid 000263154000011 ko
dc.type.rims ART ko
dc.description.wostc 59 *
dc.description.scopustc 62 * 2015-05-06 * 2014-09-25 *
dc.identifier.doi 10.1149/1.3065971 ko
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