Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5349185 | Applied Surface Science | 2015 | 5 Pages |
Abstract
Photoemission electron microscopy (PEEM) was used as spatially resolving method to explore the effect of electrochemical pumping with a positive voltage to porous platinum electrodes interfaced as working electrode to yttrium stabilized zirconia (YSZ). The experiments were conducted under UHV conditions (p â 10â9 mbar). In PEEM a uniform rapid darkening of the Pt surface was observed during anodic polarization followed by the appearance of bright spots on a dark background. The bright spots observed in PEEM images are due to zirconia reduction around electrically isolated Pt islands.
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Authors
Arafat Toghan, R. Imbihl,