Porous La0.6Sr0.4CoO3-δ thin film cathodes for large area micro solid oxide fuel cell power generators

JOURNAL OF POWER SOURCES

卷:248

Article

Garbayo, I.¹  Esposito, V.²  Sanna, S.²  Morata, A.³  Pla, D.³  Fonseca, L.¹  Sabate, N.¹  Tarancon, A.³ 

[1] CSIC, Natl Ctr Microelect, Inst Microelect Barcelona, IMB CNM CSIC, Barcelona 08193, Spain

[2] Tech Univ Denmark DTU, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark

[3] Catalonia Inst Energy Res, IREC, Dept Adv Mat Energy Applicat, Barcelona 08930, Spain

关键词: Micro solid oxide fuel cell;    Thin film cathode;    Self-supported electrolyte;    Lanthanum strontium cobaltite;    Microelectromechanical systems;   

DOI  :  10.1016/j.jpowsour.2013.10.038

来源: Elsevier

【 摘 要 】

Porous La0.6Sr0.4CoO3-delta thin films were fabricated by pulsed laser deposition for being used as a cathode for micro solid oxide fuel cell applications as MEMS power generators. Symmetrical La0.6Sr0.4CoO3-delta/yttria-stabilized zirconia/La0.6Sr0.4CoO3-delta free-standing membranes were fabricated using silicon as a substrate. A novel large-area membrane design based on grids of doped-silicon slabs was used. Thermomechanical stability of the tri-layer membranes was ensured in the intermediate range of temperatures up to 700 degrees C. In-plane conductivity of ca. 300 S cm(-1) was measured for the cathode within the whole range of application temperatures. Finally, area specific resistance values below 0.3 0 cm(2) were measured for the cathode/electrolyte bi-layer at 700 degrees C in the exact final micro solid oxide fuel cell device configuration, thus presenting La0.6Sr0.4CoO3-delta as a good alternative for fabricating reliable micro solid oxide fuel cells for intermediate temperature applications. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

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