Details
| Original language | English |
|---|---|
| Pages (from-to) | 156-160 |
| Number of pages | 5 |
| Journal | Applied surface science |
| Volume | 350 |
| Early online date | 20 Jan 2015 |
| Publication status | Published - 30 Sept 2015 |
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 ≈ 10 -9 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.
Keywords
- Electrochemical puming, Photoemission electron microscopy (PEEM), Platinum islands, Spillover, Yttrium stabilized zirconia (YSZ), Zirconia reduction
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Physics and Astronomy(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- General Physics and Astronomy
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Applied surface science, Vol. 350, 30.09.2015, p. 156-160.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Effect of anodic polarization on the free-floating parts at Pt/YSZ catalyst electrode
AU - Toghan, Arafat
AU - Imbihl, R.
PY - 2015/9/30
Y1 - 2015/9/30
N2 - 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 ≈ 10 -9 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.
AB - 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 ≈ 10 -9 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.
KW - Electrochemical puming
KW - Photoemission electron microscopy (PEEM)
KW - Platinum islands
KW - Spillover
KW - Yttrium stabilized zirconia (YSZ)
KW - Zirconia reduction
UR - http://www.scopus.com/inward/record.url?scp=84938750080&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2015.01.088
DO - 10.1016/j.apsusc.2015.01.088
M3 - Article
AN - SCOPUS:84938750080
VL - 350
SP - 156
EP - 160
JO - Applied surface science
JF - Applied surface science
SN - 0169-4332
ER -