TITLE:
Oxygen Reduction Reaction (ORR) on Platinum Coated Nafion Membrane: Effects of Synthesis Conditions
AUTHORS:
Sakineh Chabi, Mehdi Kheirmand
KEYWORDS:
Spin Coating, Nafion Membrane, Electrocatalyst, Oxygen Reduction Reaction, Fuel Cell
JOURNAL NAME:
Open Access Library Journal,
Vol.3 No.1,
January
27,
2016
ABSTRACT: The present study describes the catalytic activity of the platinum coated
Nafion membranes towards oxygen reduction reaction in proton exchange membrane
fuel cells. In contrast to the conventional three layered structures of the gas
diffusion electrode, as-made gas diffusion electrodes are two layered in which
the platinum electrocatalyst are deposited directly onto the Nafion membrane. Spin-coating
method and impregnation-reduction approaches were used to synthesize Pt-coated
Nafion membranes. Both methods showed comparable results. The performance data
revealed that the catalytic activity of the Nafion-Pt-GDL electrode was
strongly affected by the Nafion treatment and platinum crystal structures. The results suggest that spin-coated method is a
very successful technique for producing low loading of platinum
electrocatalyst. Not only platinum catalyst, but also a wide arrange of
catalyst-coated Nafion membranes such as palladium/Nafion can be prepared by
this approach.