Design of graphene sheets-supported Pt catalyst layer in PEM fuel cells

Journal Article · Tue Mar 01 00:00:00 EST 2011 · Electrochemistry Communications, 13(3):258-261

DOI:https://doi.org/10.1016/j.elecom.2010.12.028· OSTI ID:1008222

Park, Seh K; Shao, Yuyan; Wan, Haiying; Rieke, Peter C; Viswanathan, Vilayanur V; Towne, Silas A; Saraf, Laxmikant V; Liu, Jun; Lin, Yuehe; Wang, Yong

A series of cathodes using Pt supported onto graphene sheets with different contents of carbon black in the catalyst layer were prepared and characterized. Carbon black was added as a spacer between two-dimensional graphene sheets in the catalyst layer to study its effect on the performances of proton exchange membrane fuel cell. Electrochemical properties and surface morphology of the cathodes with and without carbon black were characterized using cyclic voltammetry, ac-impedance spectroscopy, electrochemical polarization technique, and scanning electron microscopy. The results indicated that carbon black effectively modifies the array of graphene supports, resulting in more Pt nanoparticles available for electrochemical reaction and better mass transport in the catalyst layer.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1008222
• Report Number(s): PNNL-SA-77001; 40067; EB4209000; TRN: US201106%%334
• Journal Information: Electrochemistry Communications, 13(3):258-261, Vol. 13, Issue 3; ISSN 1388-2481
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
CARBON BLACK
CATALYSTS
CATHODES
DESIGN
FUEL CELLS
MORPHOLOGY
POLARIZATION
PROTON EXCHANGE MEMBRANE FUEL CELLS
SCANNING ELECTRON MICROSCOPY
SPACERS
SPECTROSCOPY
TRANSPORT
Proton exchange membrane fuel cells
Catalyst layer
Graphene sheets
Carbon black
Spacer.
Environmental Molecular Sciences Laboratory