The Pt(111)/Electrolyte Interface under Oxygen Reduction Reaction Conditions

An elctrochemical Impedance Spectroscopy Study

A.S. Bondarenko, Ifan Stephens, Heine Anton Hansen, F.J. Perez-Alonso, Vladimir Tripkovic, Tobias Peter Johansson, Jan Rossmeisl, Jens Kehlet Nørskov, Ib Chorkendorff

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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.
Original languageEnglish
JournalLangmuir
Volume27
Issue number5
Pages (from-to)2058
ISSN0743-7463
DOIs
Publication statusPublished - 2011

Cite this

Bondarenko, A.S. ; Stephens, Ifan ; Hansen, Heine Anton ; Perez-Alonso, F.J. ; Tripkovic, Vladimir ; Johansson, Tobias Peter ; Rossmeisl, Jan ; Nørskov, Jens Kehlet ; Chorkendorff, Ib. / The Pt(111)/Electrolyte Interface under Oxygen Reduction Reaction Conditions : An elctrochemical Impedance Spectroscopy Study. In: Langmuir. 2011 ; Vol. 27, No. 5. pp. 2058.
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abstract = "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.",
author = "A.S. Bondarenko and Ifan Stephens and Hansen, {Heine Anton} and F.J. Perez-Alonso and Vladimir Tripkovic and Johansson, {Tobias Peter} and Jan Rossmeisl and N{\o}rskov, {Jens Kehlet} and Ib Chorkendorff",
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doi = "10.1021/la1042475",
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volume = "27",
pages = "2058",
journal = "Langmuir",
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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 journalJournal articleResearchpeer-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 -