Templating the near-surface liquid electrolyte:<i>In situ</i>surface x-ray diffraction study on anion/cation interactions at electrified interfaces

Keller, Hubert; Saracino, Martino; Nguyen, Hai; Broekmann, Peter

doi:10.1103/physrevb.82.245425

Cited by 35 publications

(68 citation statements)

References 36 publications

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“…The appearance of the negative-going band at 1609 cm À1 above 0.7 V in CsOH solution (Figure 2 b) indicates the existence of adsorbed water below 0.6 V, which is similar to the result in LiOH solution. [11] Although the d OÀPt value of 2.18 (10) in CsOH solution is identical to that in LiOH solution at 0.6 V, the occupancy factor of oxygen species is slightly higher than that in LiOH solution. [11] Although the d OÀPt value of 2.18 (10) in CsOH solution is identical to that in LiOH solution at 0.6 V, the occupancy factor of oxygen species is slightly higher than that in LiOH solution.…”

Section: Resultsmentioning

confidence: 92%

“…At 0.6 V in LiOH solution, the layer distance between the oxygen species and the first Pt layer (d OÀPt ) is 2.23 (10) . At 0.6 V in LiOH solution, the layer distance between the oxygen species and the first Pt layer (d OÀPt ) is 2.23 (10) .…”

Section: Resultsmentioning

confidence: 99%

“…[5,6] Doublelayer studies were extended to single-crystal electrodes by using voltammetry and capacitance measurements, [7] and the atomic-level structure and electrochemical properties of chemisorption layers have been widely studied by using scanning probe microscopy, vibrational spectroscopy and X-ray diffractometry. [9][10][11][12][13][14][15] We determined the structure of the non-adsorbed Cs + cation above Br adsorbed on Ag(100) and revealed that formation of the Br adlayer was promoted by the attractive non-covalent interaction between hydrated Cs + and Br ad . Recently, the detailed structures of some non-specifically adsorbed ions have been determined by using the surface Xray diffraction (SXRD) method.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Non‐Specifically Adsorbed Ions on the Surface Oxidation of Pt(111)

Nakamura¹,

Nakajima²,

Hoshi³

et al. 2013

ChemPhysChem

107

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The oxidation processes of a Pt(111) electrode in alkaline electrolytes depend on non-specifically adsorbed ions according to in situ X-ray diffraction and infrared spectroscopic measurements. In an aqueous solution of LiOH, an OHad adlayer is formed in the first oxidation step of the Pt(111) electrode as a result of the strong interaction between Li(+) and OHad , whereas Pt oxidation proceeds without OHad formation in CsOH solution. Structural analysis by X-ray diffraction indicates that Li(+) is strongly protective against surface roughening caused by subsurface oxidation. Although Cs(+) is situated near the Pt surface, the weak protective effect of Cs(+) results in irreversible surface roughening due to subsurface oxidation.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Non‐Specifically Adsorbed Ions on the Surface Oxidation of Pt(111)

Nakamura¹,

Nakajima²,

Hoshi³

et al. 2013

ChemPhysChem

107

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“…The cells with hanging drop shown in Figure were developed and used by Keller et al . for studies of EDL by SXRD.…”

Section: Progress In Analytical Techniques Observed In Electrochemicmentioning

confidence: 99%

Probing Operating Electrochemical Interfaces by Photons and Neutrons

et al. 2015

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The operation of all electrochemical energy-related systems, such as supercapacitors, batteries, fuel cells, etc. depends largely on the processes occurring at electrochemical interfaces at which charge separation and chemical reactions occur. Evolution of structure and composition at the interface between electrodes and electrolytes affects all the device′s functional parameters including power and long-term performance stability. The analytical techniques capable of exploring the interfaces are still very limited, and more often only ex situ studies are performed. This sometimes leads to a loss of important pieces of the puzzle, hindering the development of novel technologies, as in many cases intermediates and electrochemical reaction products cannot be “quenched” for post-process analyses. Techniques capable of operando probing of electrochemical interfaces by photons and neutrons have become an extensively growing field of research. This review aims at highlighting approaches and developing ideas on the adaptation of photoelectron, X-ray absorption, vibrational spectroscopy, nuclear magnetic resonance, and X-ray and neutron reflectometry in electrochemical studies

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“…4 X-ray diffraction can reveal the structure of both the adsorbed and nonadsorbed species in the EDL. 4,18,19 In this paper, the Cs structure on Ag(100) during Br adlayer formation was investigated using in-situ measurement of the x-ray specular rod. We report the structural effects of Cs on the Br adsorption and the order-disorder transition.…”

Section: Introductionmentioning

confidence: 99%

Structure of the electrical double layer on Ag(100): Promotive effect of cationic species on Br adlayer formation

et al. 2011

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We revealed the promotive effect of alkali metal cations on Br adlayer formation on an Ag(100) electrode by in-situ measurement of the x-ray specular rod. Alkali metal cations in the electrical double layer affect the onset potential of Br adsorption and the order-disorder transition. We determined the Cs structure in the electrical double layer during Br adlayer formation and found that (1) the Cs structure depends on the coverage of adsorbed Br, and (2) the amount of Cs increases at the initial stage of Br adlayer formation. Structural analysis suggests that hydrated Cs is localized in the area around adsorbed Br via noncovalent interactions. Formation of a Cs-Br complex promotes Br adsorption.

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Templating the near-surface liquid electrolyte:In situsurface x-ray diffraction study on anion/cation interactions at electrified interfaces

Cited by 35 publications

References 36 publications

Effect of Non‐Specifically Adsorbed Ions on the Surface Oxidation of Pt(111)

Effect of Non‐Specifically Adsorbed Ions on the Surface Oxidation of Pt(111)

Probing Operating Electrochemical Interfaces by Photons and Neutrons

Structure of the electrical double layer on Ag(100): Promotive effect of cationic species on Br adlayer formation

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