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Electrochemical and Solid State Letters, Vol.13, No.8, B91-B94, 2010
Impregnated La0.75Sr0.25Cr0.5Fe0.5O3-delta-Based Anodes Operating on H-2, CH4, and C2H5OH Fuels
An aqueous impregnation method has been developed to incorporate La0.75Sr0.25Cr0.5Fe0.5O3-delta, NiO, and Sm-doped CeO2 phases into a presintered porous yttria-stabilized zirconia (YSZ) anode matrix to form an effective LSCrFe + NiO + SDC + YSZ composite anode, in which the well-sintered YSZ provides a highly connected ion-conducing pathway while a small amount of Ni and SDC acts as catalyst. A single cell with this anode demonstrates the maximum power densities of 1438, 969, and 617 mW cm(-2) at 800 degrees C when flowing oxygen was used as oxidant and H-2, CH4, and C2H5OH as fuels, respectively, and this anode displays good redox stability. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3432257] All rights reserved.
Keywords:catalysts;cerium compounds;chromium compounds;lanthanum compounds;organic compounds;oxidation;reduction (chemical);samarium;sintering;solid oxide fuel cells;strontium compounds;yttrium compounds;zirconium compounds