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

作者：Park Sehkyu; Shao Yuyan; Wan Haiying; Rieke Peter C; Viswanathan Vilayanur V; Towne Silas A; Saraf Laxmikant V; Liu Jun; Lin Yuehe; Wang Yong^*

来源：Electrochemistry Communications, 2011, 13(3): 258-261.

DOI：10.1016/j.elecom.2010.12.028

• Proton exchange membrane fuel cells
• Catalyst layer
• Graphene sheets
• Carbon black
• Spacer

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 performance 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. Published by Elsevier B.V.

• 出版日期2011-3