NiO/ZrO2-CeO2 Anodes for Single-Chamber Solid-Oxide Fuel Cells Operating on Methane/Air Mixtures

D.G. LAMAS; M.D. CABEZAS; I.O. FÁBREGAS; N.E. WALSÖE DE RECA; G.E. LASCALEA; A. KODJAIAN; M.A. VIDAL; N.E. AMADEO; S.A. LARRONDO

ECS Transactions

The Electrochemical Society

Año: 2007 vol. 7 p. 961 - 970

1938-5862

Single-chamber SOFCs have received much attention in recent years due to their simple design and low cost. In this work, we evaluated single-chamber SOFCs that operate in methane/airmixtures at high temperatures (900-1000°C). YSZ was used as electrolyte, La0.8Sr0.2MnO3 as cathode, and NiO and NiO/ZrO2-50, 70 or 90 mol% CeO2 composites as anode. ZrO2-CeO2 solid solutions were previously characterized by several techniques and results of their structural and catalytic characterization are presented. Our results demonstrate that the incorporation of ZrO2-CeO2 catalysts in the anode significantly improves performance of the cell.