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Doped Perovskite Oxide, PrMnO 3 , as a New Cathode for Solid‐Oxide Fuel Cells that Decreases the Operating Temperature
Author(s) -
Ishiham Tatsumi,
Kudo Takanari,
Matsuda Hideaki,
Takita Yusaku
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb09779.x
Subject(s) - cathode , oxide , perovskite (structure) , doping , materials science , solid oxide fuel cell , cathodic protection , inorganic chemistry , analytical chemistry (journal) , chemistry , electrochemistry , anode , metallurgy , crystallography , optoelectronics , electrode , chromatography
Cathodic overpotentials of Ln 0.6 Sr 0.4 MnO 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 3 cathode maintained low values despite decreased operating temperature. Consequently, almost the same power density of a SOFC with Ln 0.6 Sr 0.4 MnO 3 cathode was obtained at about 100 K lower operating temperature by using Sr‐doped PrMnO 3 as the cathode.