Electrocatalysis-induced elasticity modulation in a superionic proton conductor probed by band-excitation atomic force microscopy

Electrocatalysis-induced elasticity modulation in a superionic proton conductor probed by band-excitation atomic force microscopy

Variable temperature band-excitation atomic force microscopy in conjunction with I - V spectroscopy was used to investigate the crystalline superionic proton conductor CsHSO 4 during proton exchange induced by a Pt-coated conductive scanning probe. At a sample temperature of 150 °C and under an appl...

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Veröffentlicht in:Nanoscale 2015-12, Vol.7 (47), p.289-294
Hauptverfasser: Papandrew, A. B, Li, Q, Okatan, M. B, Jesse, S, Hartnett, C, Kalinin, S. V, Vasudevan, R. K
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Sprache:eng
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Atomic force microscopy
Chemical reactions
Conductors (devices)
Contact
Modulation
Nanostructure
Phase shift
Scanning
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container_end_page 294
container_issue 47
container_start_page 289
container_title Nanoscale
container_volume 7
creator Papandrew, A. B
Li, Q
Okatan, M. B
Jesse, S
Hartnett, C
Kalinin, S. V
Vasudevan, R. K
description Variable temperature band-excitation atomic force microscopy in conjunction with I - V spectroscopy was used to investigate the crystalline superionic proton conductor CsHSO 4 during proton exchange induced by a Pt-coated conductive scanning probe. At a sample temperature of 150 °C and under an applied bias
doi_str_mv 10.1039/c5nr04809e
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These effects were not observed in the room-temperature phase of CsHSO 4 or in the case of catalytically inactive conductive probes, proving the utility of this technique for monitoring electrochemical processes on the nanoscale, as well as the use of local contact stiffness as a sensitive indicator of electrochemical reactions. 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Simultaneously, we show that the electrochemical reactions are accompanied by a reversible decrease in the elastic modulus of CsHSO 4 , as seen by a contact resonance shift, and find evidence for superplasticity during scanning. These effects were not observed in the room-temperature phase of CsHSO 4 or in the case of catalytically inactive conductive probes, proving the utility of this technique for monitoring electrochemical processes on the nanoscale, as well as the use of local contact stiffness as a sensitive indicator of electrochemical reactions. 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source Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection
subjects Atomic force microscopy
Chemical reactions
Conductors (devices)
Contact
Modulation
Nanostructure
Phase shift
Scanning
title Electrocatalysis-induced elasticity modulation in a superionic proton conductor probed by band-excitation atomic force microscopy
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