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A Highly Active Perovskite Electrode for the Oxygen Reduction Reaction Below 600 °C
Author(s) -
Zhou Wei,
Sunarso Jaka,
Zhao Mingwen,
Liang Fengli,
Klande Tobias,
Feldhoff Armin
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201307305
Subject(s) - perovskite (structure) , samarium , oxygen , cathode , materials science , electrochemistry , oxygen reduction , electrode , diffusion , fuel cells , oxygen reduction reaction , power density , inorganic chemistry , chemical engineering , chemistry , power (physics) , thermodynamics , physics , organic chemistry , engineering
The novel perovskite material , SrSc 0.175 Nb 0.025 Co 0.8 O 3− δ , shows a rapid bulk oxygen diffusion rate below 550 °C (see oxygen movement indicated by the black arrow). Incorporation as an oxygen reduction cathode into a samarium‐doped ceria fuel cell enables exceptionally high electrochemical performance, indicated by a power density of 910 mW cm −2 at 500 °C.
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