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

Journal Article · Wed Jan 07 00:00:00 EST 2015 · Physical Chemistry Chemical Physics. PCCP

DOI:https://doi.org/10.1039/c4cp05176a· OSTI ID:1370129

Li, Xiaxi ^[1]; Liu, Mingfei ^[1]; Lee, Jung-pil ^[2]; Ding, Dong ^[1]; Bottomley, Lawrence A. ^[1]; Park, Soojin ^[3]; Liu, Meilin ^[1]

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1. Georgia Inst. of Technology, Atlanta, GA (United States)
2. Georgia Inst. of Technology, Atlanta, GA (United States); Ulsan National Institute of Science and Technology, Ulsan (Korea)
3. Ulsan National Institute of Science and Technology, Ulsan (Korea)

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.

• Research Organization: Energy Frontier Research Centers (EFRC) (United States). Heterogeneous Functional Materials Center (HeteroFoaM)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: SC0001061
• OSTI ID: 1370129
• Journal Information: Physical Chemistry Chemical Physics. PCCP, Vol. 17, Issue 33; Related Information: HeteroFoaM partners with University of South Carolina (lead); University of California, Santa Barbara; University of Connecticut; Georgia Institute of Technology; Princeton University; Rochester Institute of Technology; Savannah River National Laboratory; University of South Carolina; University of Utah; ISSN 1463-9076
• Publisher: Royal Society of Chemistry
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY