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Active Metal Electrode–Oxide Interface in Gas Sensor Operation Probed by In Situ and Time‐Resolved X‐Ray Spectroscopy
Author(s) -
Gurlo Aleksander,
Riedel Ralf
Publication year - 2010
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200900773
Subject(s) - in situ , electrode , oxide , spectroscopy , metal , materials science , analytical chemistry (journal) , interface (matter) , x ray spectroscopy , chemistry , optoelectronics , physics , environmental chemistry , adsorption , organic chemistry , quantum mechanics , metallurgy , gibbs isotherm
The feasibility of the in situ and operando methodology in studying the chemical and electronic phenomena associated with an active metal electrode–oxide interface in metal‐oxide‐based gas sensors (picture) is demonstrated. It is experimentally verified that the Pt electrodes in metal‐oxide based gas sensors are partially oxidised and that the oxidised Pt electrodes contribute to overall sensing performance.