Electrolyte effect on the catalytic performance of Ni-based catalysts for direct internal reforming molten carbonate fuel cell

Title
Electrolyte effect on the catalytic performance of Ni-based catalysts for direct internal reforming molten carbonate fuel cell
Authors
ZhenLan LiHary Devianto윤성필한종희임태훈이호인
Keywords
Molten carbonate fuel cell; Steam reforming; Ni catalyst; Electrolyte
Issue Date
2010-12
Publisher
International journal of hydrogen energy
Citation
VOL 35, NO 23, 13041-13047
Abstract
An active and tolerant Ni-based catalyst for methane steam reforming in direct internal reforming molten carbonate fuel cells (DIR-MCFCs) was developed. Deactivation of reforming catalysts by alkali metals from the electrolyte composed of Li2CO3 and K2CO3 is one of the major obstacles to be overcome in commercialization of DIR-MCFCs. Newly developed Ni/MgSiO3 and Ni/Mg2SiO4 reforming catalysts show activities of ca. 80% methane conversion. Subsequent to electrolyte addition to the catalyst, however, the activity of Ni/Mg2SiO4 decreases to ca. 50% of its initial value, whereas Ni/MgSiO3 catalyst retains its initial activity. Results obtained from temperature-programmed reduction and X-ray photoelectron spectroscopy identify unreduced Ni3þ as a decisive factor in keeping catalytic activity from the electrolyte.
URI
http://pubs.kist.re.kr/handle/201004/39257
ISSN
0360-3199
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KIST Publication > Article
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