NDLI: Electrochemical testing of composite electrodes of (La1−x Sr x ) s MnO3 and doped ceria in NO-containing atmosphere

Content Provider	Springer Nature Link
Author	Werchmeister, Rebecka M. L. Hansen, Kent Kammer Mogensen, Mogens
Copyright Year	2011
Abstract	The possibility of using electrochemical cells for removal of NO x from an exhaust gas with excess O2 has been examined. (La1−x Sr x ) s MnO3 (LSM) and ceria doped with Pr or Gd were selected as electrode materials and investigated in three-electrode cells. The electrodes were characterised electrochemically with electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV), and the gas composition monitored while the electrodes were polarised. The electrodes of (La0.5Sr0.5)0.99MnO3 (LSM50) and Ce0.8Pr0.2O2−δ exhibit higher current densities in 0.1% NO in Ar than in air at 300 to 400 °C during CV. This indicates some apparent selectivity towards NO compared to O2. The electrodes can remove NO, when polarised to at least −0.6 V vs. Pt/Air at 600 °C, and EIS measurements under polarisation indicate that the kinetics of the electrodes change, when the electrode potential gets below −0.6 V vs. Pt/Air.
Starting Page	703
Ending Page	714
Page Count	12
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	16
Issue Number	2
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-05-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Composites Electrical properties CeO2 Perovskites Electrochemical deNO x Energy Storage Physical Chemistry Analytical Chemistry Condensed Matter Physics Characterization and Evaluation of Materials Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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