Abstract
Tender X-ray operando photoemission spectroscopy has been used to directly analyze the energetics of the double layer at a metal-water interface in a dilute electrolyte having a Debye length of several nanometers. The data are compared to a theoretical evaluation of the potential of the solution near the electrode. Due to its noble nature, Ir was chosen as a working electrode material, and KOH(aq) at varied concentrations and thicknesses constituted the electrolyte. Shifts in peak width and binding energy of the water O 1s core level were analyzed by modeling based on Debye-Hückel approximations. The data are consistent with electrochemical formulations of the double layer that provide a foundation to electrochemistry.
| Original language | English |
|---|---|
| Journal | Journal of Electron Spectroscopy and Related Phenomena |
| DOIs | |
| Publication status | Accepted/In press - Nov 11 2016 |
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Keywords
- Electrochemical double layer
- Operando XPS
- Solid/liquid interface
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Radiation
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Spectroscopy
- Physical and Theoretical Chemistry
Cite this
Operando X-ray photoelectron spectroscopic investigations of the electrochemical double layer at Ir/KOH(aq) interfaces. / Lichterman, Michael F.; Richter, Matthias H.; Brunschwig, Bruce S.; Lewis, Nathan S; Lewerenz, Hans Joachim.
In: Journal of Electron Spectroscopy and Related Phenomena, 11.11.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Operando X-ray photoelectron spectroscopic investigations of the electrochemical double layer at Ir/KOH(aq) interfaces
AU - Lichterman, Michael F.
AU - Richter, Matthias H.
AU - Brunschwig, Bruce S.
AU - Lewis, Nathan S
AU - Lewerenz, Hans Joachim
PY - 2016/11/11
Y1 - 2016/11/11
N2 - Tender X-ray operando photoemission spectroscopy has been used to directly analyze the energetics of the double layer at a metal-water interface in a dilute electrolyte having a Debye length of several nanometers. The data are compared to a theoretical evaluation of the potential of the solution near the electrode. Due to its noble nature, Ir was chosen as a working electrode material, and KOH(aq) at varied concentrations and thicknesses constituted the electrolyte. Shifts in peak width and binding energy of the water O 1s core level were analyzed by modeling based on Debye-Hückel approximations. The data are consistent with electrochemical formulations of the double layer that provide a foundation to electrochemistry.
AB - Tender X-ray operando photoemission spectroscopy has been used to directly analyze the energetics of the double layer at a metal-water interface in a dilute electrolyte having a Debye length of several nanometers. The data are compared to a theoretical evaluation of the potential of the solution near the electrode. Due to its noble nature, Ir was chosen as a working electrode material, and KOH(aq) at varied concentrations and thicknesses constituted the electrolyte. Shifts in peak width and binding energy of the water O 1s core level were analyzed by modeling based on Debye-Hückel approximations. The data are consistent with electrochemical formulations of the double layer that provide a foundation to electrochemistry.
KW - Electrochemical double layer
KW - Operando XPS
KW - Solid/liquid interface
UR - http://www.scopus.com/inward/record.url?scp=85017511460&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85017511460&partnerID=8YFLogxK
U2 - 10.1016/j.elspec.2017.03.011
DO - 10.1016/j.elspec.2017.03.011
M3 - Article
AN - SCOPUS:85017511460
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
SN - 0368-2048
ER -