Development of Single Chamber Solid Oxide Fuel Cells (SCFC).

Jean-Paul Viricelle (1) , Sorina Udroiu (2) , Geoffroy Gadacz (2) , Michele Pijolat (3) , Christophe Pijolat (2)

1 Centre SPIN
2 SPIN/MICC
3 SPIN/PROCESS

Single Chamber Solid Oxide Fuel Cells (SCFC) have been prepared using an electrolyte as support (Ce0.9Gd0.1O1.95 named GDC). Anode (Ni-GDC) and different cathodes (Sm0.5Sr0.5CoO3 - SSC, Ba0.5Sr0.5Co0.2Fe0.8O3 - BSCF, and La0.8Sr0.2MnO3 - LSM) were placed on the same side of the electrolyte. All the electrodes were deposited using screen-printing technology. A gold collector was also deposited on the cathode to decrease the over-potential. The different materials and fuel cell devices were tested under propane / air mixture, after a preliminary treatment under hydrogen to reduce the as-deposited nickel oxide anode. The results show that SSC and BSCF cathodes are not stable in these conditions, leading to a very low open circuit voltage (OCV) of 150mV. Although LSM material isn't the more adequate cathode regarding its high catalytic activity towards hydrocarbon conversion, it has a better chemical stability than SSC and BSCF. Ni-GDC-LSM SCFC devices were elaborated and tested; an open circuit voltage of nearly 750mVcould be obtained with maximum power densities around 20mW.cm-2 at 620°C, under air-propane mixture with C3H8/O2 ratio equal to 0.53 .

Mots clés: Physical Sciences

Jean-Paul Viricelle, Sorina Udroiu, Geoffroy Gadacz, Michele Pijolat, Christophe Pijolat. Development of Single Chamber Solid Oxide Fuel Cells (SCFC).. Fuel Cells, 2010, 10 (4), pp.683. ⟨10.1002/fuce.200900146⟩. ⟨hal-00552364⟩