SiC nanocrystals as Pt catalyst supports for fuel cell applications
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SiC nanocrystals as Pt catalyst supports for fuel cell applications. / Dhiman, Rajnish; Morgen, Per; Skou, E.M.; Andersen, S.M.; Johnson, E.
In: Journal of Materials Chemistry A, Vol. 1, No. 19, 01.01.2013, p. 6030-6036.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - SiC nanocrystals as Pt catalyst supports for fuel cell applications
AU - Dhiman, Rajnish
AU - Morgen, Per
AU - Skou, E.M.
AU - Andersen, S.M.
AU - Johnson, E.
PY - 2013/1/1
Y1 - 2013/1/1
N2 - A robust catalyst support is pivotal to Proton Exchange Membrane Fuel Cells (PEMFCs) to overcome challenges such as catalyst support corrosion, low catalyst utilization and overall capital cost. SiC is a promising candidate material which could be applied as a catalyst support in PEMFCs. SiC nanocrystals are here synthesized using nano-porous carbon black (Vulcan XC-72) as a template using two different reactions, which result in particle sizes in the ranges of 50-150 nm (SiC-SPR) and 25-35 nm (SiC-NS). Pt nano-catalysts of size 5-8 nm and 4-5 nm have successfully been uniformly deposited on the nanocrystals of SiC-SPR and SiC-NS by the polyol method. The SiC substrates are subjected to an acid treatment to introduce the surface groups, which help to anchor the Pt nano-catalysts. These SiC based catalysts have been found to have a higher electrochemical activity than commercially available Vulcan based catalysts (BASF & HISPEC). These promising results signal a new era of SiC based catalysts for fuel cell applications.
AB - A robust catalyst support is pivotal to Proton Exchange Membrane Fuel Cells (PEMFCs) to overcome challenges such as catalyst support corrosion, low catalyst utilization and overall capital cost. SiC is a promising candidate material which could be applied as a catalyst support in PEMFCs. SiC nanocrystals are here synthesized using nano-porous carbon black (Vulcan XC-72) as a template using two different reactions, which result in particle sizes in the ranges of 50-150 nm (SiC-SPR) and 25-35 nm (SiC-NS). Pt nano-catalysts of size 5-8 nm and 4-5 nm have successfully been uniformly deposited on the nanocrystals of SiC-SPR and SiC-NS by the polyol method. The SiC substrates are subjected to an acid treatment to introduce the surface groups, which help to anchor the Pt nano-catalysts. These SiC based catalysts have been found to have a higher electrochemical activity than commercially available Vulcan based catalysts (BASF & HISPEC). These promising results signal a new era of SiC based catalysts for fuel cell applications.
UR - http://www.scopus.com/inward/record.url?scp=84876892613&partnerID=8YFLogxK
U2 - 10.1039/c3ta10238f
DO - 10.1039/c3ta10238f
M3 - Journal article
AN - SCOPUS:84876892613
VL - 1
SP - 6030
EP - 6036
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
SN - 0959-9428
IS - 19
ER -
ID: 45772765