Properties of Pt-based electrocatalysts containing selectively deposited Sn as the anode for polymer electrolyte membrane fuel cells

Sn-promoted Pt-based catalysts were prepared by the chemical vapor deposition (CVD) of Sn on commercial Pt/C and PtRu/C catalysts using Sn(CH 3) 4 as an Sn precursor. The prepared catalysts showed higher CO tolerance than those prepared by adding Sn using an impregnation (IMP) method. This result wa...

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Bibliographic Details
Published inInternational journal of hydrogen energy Vol. 36; no. 2; pp. 1606 - 1612
Main Authors Kim, Hyun Tae, Yoo, Jong Suk, Joh, Han-Ik, Kim, Heeyeon, Moon, Sang Heup
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 2011
Elsevier
Subjects
Alternative fuels. Production and utilization
Applied sciences
Carbon
Catalysis
Catalysts
Chemical vapor deposition
CO tolerance
Contact
CVD
Deposition
Energy
Exact sciences and technology
Fuels
Hydrogen
PEMFC
Platinum
PtRuSn/C
PtSn/C
Tin
CVD
PtRuSn/C
PEMFC
CO tolerance
Sn
PtSn/C
Ruthenium
Anode
Polymer electrolytes
Hydrogen
Electrocatalysis
Platinum
Membrane
Catalyst
Fuel cell
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Summary:Sn-promoted Pt-based catalysts were prepared by the chemical vapor deposition (CVD) of Sn on commercial Pt/C and PtRu/C catalysts using Sn(CH 3) 4 as an Sn precursor. The prepared catalysts showed higher CO tolerance than those prepared by adding Sn using an impregnation (IMP) method. This result was obtained because Sn added by CVD was selectively deposited on the Pt and Ru surfaces, instead of on a carbon support, such that the interfacial contact between Pt and Sn was greater in the Sn-CVD catalyst than in the others, as confirmed by in-situ infrared and X-ray photoelectron spectroscopic observations of the catalysts.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2010.10.075