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An Aurivillius Oxide Based Cathode with Excellent CO 2 Tolerance for Intermediate‐Temperature Solid Oxide Fuel Cells
Author(s) -
Zhu Yinlong,
Zhou Wei,
Chen Yubo,
Shao Zongping
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201604160
Subject(s) - oxide , aurivillius , cathode , materials science , electrolyte , thermal expansion , inorganic chemistry , cobalt oxide , thermal stability , oxygen , electrochemistry , chemical engineering , chemistry , electrode , metallurgy , organic chemistry , optoelectronics , dielectric , engineering , ferroelectricity
Abstract The Aurivillius oxide Bi 2 Sr 2 Nb 2 MnO 12− δ (BSNM) was used as a cobalt‐free cathode for intermediate‐temperature solid oxide fuel cells (IT‐SOFCs). To the best of our knowledge, the BSNM oxide is the only alkaline‐earth‐containing cathode material with complete CO 2 tolerance that has been reported thus far. BSNM not only shows favorable activity in the oxygen reduction reaction (ORR) at intermediate temperatures but also exhibits a low thermal expansion coefficient, excellent structural stability, and good chemical compatibility with the electrolyte. These features highlight the potential of the new BSNM material as a highly promising cathode material for IT‐SOFCs.