BROWSE

Related Researcher

Author's Photo

UNIST, Researcher
UNIST
Research Interests
  • All Subjects

ITEM VIEW & DOWNLOAD

In situ probing of the mechanisms of coking resistance on catalyst-modified anodes for solid oxide fuel cells

Cited 3 times inthomson ciCited 1 times inthomson ci
Title
In situ probing of the mechanisms of coking resistance on catalyst-modified anodes for solid oxide fuel cells
Author
Li, XiaxiLiu, MingfeiLai, Samson Y.Ding, dongGong, MingyangLee, Jung-PilBlinn, Kevin S.Bu, YunfeiWang, ZhilhongBottomley, Lawrence A.Alamgir, Faisal M.Liu, Meilin
Issue Date
2015-02
Publisher
AMER CHEMICAL SOC
Citation
CHEMISTRY OF MATERIALS, v.27, no.3, pp.822 - 828
Abstract
Coking is a major cause of performance degradation of Ni-based anodes in solid oxide fuel cells (SOFCs) powered by carbon-containing fuels. While modification of Ni surfaces using a thin coating of BaO, BaZr0.9Y0.1O3-d (BZY), and BaZr0.1Ce0.7Y0.1Yb0.1O3-d (BZCYYb) was reported to alleviate the problem, the mechanism is yet to be understood. In this study, in situ Raman spectroscopy and surface enhanced Raman spectroscopy (SERS) are used to probe the surface chemistry of BaO, BZY, and BZCYYb. Analyses of the time-resolved spectral features of C-C bonds, -OH groups, and -CO3 groups reveal the interactions between surface functional groups and gas species (hydrocarbon, water steam, and CO2). While the switching from -OH to -CO3 groups is irreversible on BaO surfaces, it becomes reversible on both BZY and BZCYYb surfaces. Although the -OH mediated carbon removal is observed on the surfaces of all three catalysts, the -CO3 is found effective for carbon removal only on the BZCYYb surface.
URI
https://scholarworks.unist.ac.kr/handle/201301/10762
URL
http://pubs.acs.org/doi/abs/10.1021/cm503852v
DOI
10.1021/cm503852v
ISSN
0897-4756
Appears in Collections:
ETC_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU