One-pot synthesis of platinum nanoparticles embedded on reduced graphene oxide for oxygen reduction in methanol fuel cells
Date
2011
Authors
Ha, H.W.
Kim, I.Y.
Hwang, S.J.
Ruoff, R.S.
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ECS Electrochemistry Letters, 2011; 14(7):70-73
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Abstract
A simple approach has been developed for the synthesis of Pt nanoparticles with uniform diameters of approximately 2.9 nm supported on reduced graphene oxide (RG-O) platelets via a modified polyol method. Compared to Johnson Matthey (JM) Pt/C (75 wt % Pt) catalyst, the Pt/RG-O (70 wt % Pt) composite showed much higher electrochemical surface area, greater catalytic activity towards the oxygen reduction reaction (ORR), and significantly better single cell polarization performance. The maximum power density of the Pt/RG-O composite was about 128 mW cm(-2), an 11% greater than the JM Pt/C commercial catalyst.
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Copyright 2011 Electrochemical Society