Abstract
Proton Exchange Membrane Fuel Cells (PEMFCs) represent promising technologies to the world economy, with many applications and low environmental impact. A most important aspect concerning their widespread implementation is the cost of polymeric membranes, typically perfluorinated membranes and platinum-based catalytic electrode materials, all of which are necessary to promote electrode reactions, thus increasing fuel cell energy efficiency. In this work, we present some data about non-fluorinated polyetheresulphone (PES) membranes and Pt-free catalysts, as possible substitutes of the above materials. Their electrochemical behaviour in oxygen reduction reaction in acidic media are investigated and compared with available reference materials.
Highlights
Polymer electrolyte membrane fuel cells (PEMFCs) have achieved significant progress over the past few decades
The electrochemical behaviour of the PES membrane and thiamine catalyst in oxygen reduction (ORR) conditions were investigated and compared to reference materials, i.e. Nafion 1100 and EC-20 catalyst (20 % Pt dispersed on Vulcan XC72R)
The high percentage of 40 nm mesopores is presumably useful to oxygen reduction reaction (ORR) behaviour, providing easy diffusional access to the reactive catalyst surface and to the Nafion ionomer units [23, 24]
Summary
Polymer electrolyte membrane fuel cells (PEMFCs) have achieved significant progress over the past few decades. PES IONOMER AND Pt-FREE CATALYST FOR PEMFCs membranes.
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