Doped perovskite oxide, PrMnO[sub 3], as a new cathode for solid-oxide fuel cells that decreases the operating temperature

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb09779.x· OSTI ID:7269305

Ishihara, Tatsumi; Kudo, Takanari; Matsuda, Hideaki; Takita, Yusaku ^[1]

---

1. Oita Univ., Dannoharu (Japan). Dept. of Applied Chemistry

Cathodic overpotentials of Ln[sub 0.6]Sr[sub 0.4]MnO[sub 3] (Ln is La, Pr, Nd, Sm, Gd, Yb, and Y) were studied for a new cathode for solid-oxide fuel cells (SOFCs) with low overpotentials in a relatively-low-temperature region. Cathodic overpotentials strongly depended on the rare-earth cations in the A sites of the perovskite oxide. In particular, overpotentials of a Sr-doped PrMnO[sub 3] cathode maintained low values despite decreased operating temperature. Consequently, almost the same power density of a SOFC with La[sub 0.6]Sr[sub 0.4]MnO[sub 3] cathode was obtained at about 100 K lower operating temperature by using Sr-doped PrMnO[sub 3] as the cathode.

• OSTI ID: 7269305
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:6; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
CATHODES
CHALCOGENIDES
DIRECT ENERGY CONVERTERS
DOPED MATERIALS
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
FUEL CELLS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM
THERMODYNAMIC PROPERTIES