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Issue 33, 2015
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An operando surface enhanced Raman spectroscopy (SERS) study of carbon deposition on SOFC anodes

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Abstract

Thermally robust and chemically inert Ag@SiO2 nanoprobes are employed to provide the surface enhanced Raman scattering (SERS) effect for an in situ/operando study of the early stage of carbon deposition on nickel-based solid oxide fuel cell (SOFC) anodes. The enhanced sensitivity to carbon enables the detection of different stages of coking, offering insights into intrinsic coking tolerance of material surfaces. Application of a thin coating of gadolinium doped ceria (GDC) enhances the resistance to coking of nickel surfaces. The electrochemically active Ni–YSZ interface appears to be more active for hydrocarbon reforming, resulting in the accumulation of different hydrocarbon molecules, which can be readily removed upon the application of an anodic current. Operando SERS is a powerful tool for the mechanistic study of coking in SOFC systems. It is also applicable to the study of other catalytic and electrochemical processes in a wide range of conditions.

Graphical abstract: An operando surface enhanced Raman spectroscopy (SERS) study of carbon deposition on SOFC anodes

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Article information


Submitted
08 Nov 2014
Accepted
07 Jan 2015
First published
07 Jan 2015

Phys. Chem. Chem. Phys., 2015,17, 21112-21119
Article type
Communication
Author version available

An operando surface enhanced Raman spectroscopy (SERS) study of carbon deposition on SOFC anodes

X. Li, M. Liu, J. Lee, D. Ding, L. A. Bottomley, S. Park and M. Liu, Phys. Chem. Chem. Phys., 2015, 17, 21112
DOI: 10.1039/C4CP05176A

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