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

DIEGO G. LAMAS; MARCELO D. CABEZAS; ISMAEL O. FÁBREGAS; NOEMÍ E. WALSÖE DE RECA; GUSTAVO E. LASCALEA; ARMEN KODJAIAN; MARÍA A. VIDAL; NORMA E. AMADEO; SUSANA A. LARRONDO

ECS Transactions

The Electrochemical Society

Lugar: Pennington, New Jersey; Año: 2007 vol. 7 p. 961 - 970

1938-5862

Single-chamber SOFCs have received much attention in recentyears due to their simple design and low cost. In this work, we evaluated single-chamber SOFCs that operate in methane/air mixtures at high temperatures (900-1000°C). YSZ was used aselectrolyte, 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.