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In this study, a simple and cost-effective dry-pressing method has been used to fabricate a symmetrical solid oxide fuel cell (SOFC) where the dense yttria-stabilized zirconia (YSZ) electrolyte film is sandwiched between two symmetrical porous YSZ layers in which La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3-delta) (LSCM) based anode and cathode are incorporated using wet impregnation techniques. The maximum power densities (P(max)) of a single cell with 32 wt.% LSCM impregnated YSZ anode and cathode reach 333 and 265 mW cm(-2) at 900 degrees C in dry H(2) and CH(4), respectively. The cell performance is further improved with additional impregnation of a small amount of Sm-doped CeO(2) (SDC) or Ni. When 6 wt.% Ni as catalyst is added to both the anode and cathode. P(max) values of 559 and 547 mW cm(-2) can be achieved, which are better than with SDC. The effect of Ni on the cathode performance is also investigated by impedance spectra analysis. (C) 2010 Elsevier B.V. All rights reserved.

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