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Single nanoparticle SERS probes of ion intercalation in metal-oxide electrodes

Single nanoparticle SERS probes of ion intercalation in metal-oxide electrodes
Single nanoparticle SERS probes of ion intercalation in metal-oxide electrodes
Probing ion-intercalating processes in electrodes is hugely important for batteries, super-capacitors and photovoltaic devices. In this work we use single-nanoparticle probes to see real-time molecular changes correlated to electrochemically modulated ion-intercalation in metal-oxide electrodes. Using surface-enhanced Raman spectroscopy (SERS) transduced by single nanoparticle probes we observe that the Raman frequencies and spectral intensities of the adsorbed molecules vary on cycling the electrochemical potential on a vanadium-oxide electrode. The potential dependent frequency shifts in SERS from an electrochemically inert molecule are attributed to a Stark effect induced by chemical and structural changes as a result of ion-intercalation processes in vanadium-oxide. Our study opens up a unique strategy to explore adsorbates and molecular reaction pathways on ion-intercalating materials and semiconducting interfaces
1530-6984
495-498
Li, Li
8e6fbabd-aac6-4bb0-a273-a77750dc5b92
Steiner, Ullrich
839dfd85-73db-4125-b9e9-775296f6411f
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Li, Li
8e6fbabd-aac6-4bb0-a273-a77750dc5b92
Steiner, Ullrich
839dfd85-73db-4125-b9e9-775296f6411f
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9

Li, Li, Steiner, Ullrich and Mahajan, Sumeet (2014) Single nanoparticle SERS probes of ion intercalation in metal-oxide electrodes. Nano Letters, 14 (2), 495-498. (doi:10.1021/nl403485e). (PMID:24392779)

Record type: Article

Abstract

Probing ion-intercalating processes in electrodes is hugely important for batteries, super-capacitors and photovoltaic devices. In this work we use single-nanoparticle probes to see real-time molecular changes correlated to electrochemically modulated ion-intercalation in metal-oxide electrodes. Using surface-enhanced Raman spectroscopy (SERS) transduced by single nanoparticle probes we observe that the Raman frequencies and spectral intensities of the adsorbed molecules vary on cycling the electrochemical potential on a vanadium-oxide electrode. The potential dependent frequency shifts in SERS from an electrochemically inert molecule are attributed to a Stark effect induced by chemical and structural changes as a result of ion-intercalation processes in vanadium-oxide. Our study opens up a unique strategy to explore adsorbates and molecular reaction pathways on ion-intercalating materials and semiconducting interfaces

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e-pub ahead of print date: 6 January 2014
Published date: 2014
Organisations: Institute for Life Sciences, Molecular Diagnostics & Thereputics

Identifiers

Local EPrints ID: 361043
URI: http://eprints.soton.ac.uk/id/eprint/361043
ISSN: 1530-6984
PURE UUID: 600e3db2-0a58-4b85-8dd2-261c2f0a4f9f
ORCID for Sumeet Mahajan: ORCID iD orcid.org/0000-0001-8923-6666

Catalogue record

Date deposited: 13 Jan 2014 09:11
Last modified: 26 Nov 2021 02:52

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Contributors

Author: Li Li
Author: Ullrich Steiner
Author: Sumeet Mahajan ORCID iD

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