An operando surface enhanced Raman spectroscopy (SERS) study of carbon deposition on SOFC anodes
Thermally robust and chemically inert Ag@SiO 2 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 enable...
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Published in | Physical chemistry chemical physics : PCCP Vol. 17; no. 33; pp. 21112 - 21119 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
01.01.2015
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Subjects | |
Online Access | Get full text |
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Summary: | Thermally robust and chemically inert Ag@SiO
2
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.
Thermally robust SERS probes enable the study of coking kinetics on the nickel surface at early stages and at the Ni-YSZ interface. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 USDOE Office of Science (SC), Basic Energy Sciences (BES) SC0001061 |
ISSN: | 1463-9076 1463-9084 |
DOI: | 10.1039/c4cp05176a |