Abstract
| Original language | English |
|---|---|
| Journal | Langmuir |
| Volume | 27 |
| Issue number | 5 |
| Pages (from-to) | 2058 |
| ISSN | 0743-7463 |
| DOIs | |
| Publication status | Published - 2011 |
Cite this
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The Pt(111)/Electrolyte Interface under Oxygen Reduction Reaction Conditions : An elctrochemical Impedance Spectroscopy Study. / Bondarenko, A.S.; Stephens, Ifan; Hansen, Heine Anton; Perez-Alonso, F.J.; Tripkovic, Vladimir; Johansson, Tobias Peter; Rossmeisl, Jan; Nørskov, Jens Kehlet; Chorkendorff, Ib.
In: Langmuir, Vol. 27, No. 5, 2011, p. 2058.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - The Pt(111)/Electrolyte Interface under Oxygen Reduction Reaction Conditions
T2 - An elctrochemical Impedance Spectroscopy Study
AU - Bondarenko, A.S.
AU - Stephens, Ifan
AU - Hansen, Heine Anton
AU - Perez-Alonso, F.J.
AU - Tripkovic, Vladimir
AU - Johansson, Tobias Peter
AU - Rossmeisl, Jan
AU - Nørskov, Jens Kehlet
AU - Chorkendorff, Ib
PY - 2011
Y1 - 2011
N2 - The Pt(111)/electrolyte interface has been characterized during the oxygen reduction reaction (ORR) in 0.1 M HClO4 using electrochemical impedance spectroscopy. The surface was studied within the potential region where adsorption of OH* and O* species occur without significant place exchange between the adsorbate and Pt surface atoms (0.45−1.15 V vs RHE). An equivalent electric circuit is proposed to model the Pt(111)/electrolyte interface under ORR conditions within the selected potential window. This equivalent circuit reflects three processes with different time constants, which occur simultaneously during the ORR at Pt(111). Density functional theory (DFT) calculations were used to correlate and interpret the results of the measurements. The calculations indicate that the coadsorption of ClO4* and Cl* with OH* is unlikely. Our analysis suggests that the two-dimensional (2D) structures formed in O2-free solution are also formed under ORR conditions.
AB - The Pt(111)/electrolyte interface has been characterized during the oxygen reduction reaction (ORR) in 0.1 M HClO4 using electrochemical impedance spectroscopy. The surface was studied within the potential region where adsorption of OH* and O* species occur without significant place exchange between the adsorbate and Pt surface atoms (0.45−1.15 V vs RHE). An equivalent electric circuit is proposed to model the Pt(111)/electrolyte interface under ORR conditions within the selected potential window. This equivalent circuit reflects three processes with different time constants, which occur simultaneously during the ORR at Pt(111). Density functional theory (DFT) calculations were used to correlate and interpret the results of the measurements. The calculations indicate that the coadsorption of ClO4* and Cl* with OH* is unlikely. Our analysis suggests that the two-dimensional (2D) structures formed in O2-free solution are also formed under ORR conditions.
U2 - 10.1021/la1042475
DO - 10.1021/la1042475
M3 - Journal article
VL - 27
SP - 2058
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 5
ER -