Neodymium-deficient nickelate oxide Nd1.95NiO4+δ as cathode material for anode-supported intermediate temperature solid oxide fuel cells

Cécile Lalanne (1) , G. Prosperi (2) , Jean-Marc. Bassat (1) , Fabrice Mauvy (1) , Sébastien Fourcade (1) , Philippe Stevens (3) , Mohsine Zahid (3) , Stefan Diethelm (2) , Jan van Herle (2) , Jean-Claude Grenier (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 LENI - Laboratory of Industrial Energy Systems
3 EIFER - European Institute For Energy Research

The neodymium-deficient nickelate Nd1.95NiO4+δ, mixed conducting K2NiF4-type oxide, was evaluated as cathode for solid oxide fuel cells. The electrochemical properties were investigated on planar Ni–YSZ anode-supported SOFC based on co-tape casted and co-fired HTceramix® cells. Using a layer of strontium doped lanthanum cobaltite as current collector, a current density of 1.31 A cm−2 (at 0.70 V) was obtained at 800 °C using hydrogen fuel with small single cells, after optimizing the cathode sintering temperature. Impedance spectroscopy measurements were performed; the different resistive contributions and the values of the corresponding equivalent capacities are discussed.

Mots clés: Solid oxide fuel cells; Cathode; Nickelate oxide; Impedance spectroscopy

Domaines: Matériaux

Cécile Lalanne, G. Prosperi, Jean-Marc. Bassat, Fabrice Mauvy, Sébastien Fourcade, et al.. Neodymium-deficient nickelate oxide Nd1.95NiO4+δ as cathode material for anode-supported intermediate temperature solid oxide fuel cells. Journal of Power Sources, 2008, 185 (2), pp.1218-1224. ⟨10.1016/j.jpowsour.2008.06.072⟩. ⟨hal-00343510⟩