  An easy procedure to build up membrane-electrode assemblies for applications
dedicated to miniaturized PEMFC using H2 or CH3OH by a two-steps atmospheric
plasma process is reported. Firstly, catalyst nanoparticles are grafted on
carbon substrates by spraying a Pt colloidal solution in the post-discharge of
an RF atmospheric plasma torch. In the second step, the resulting decorated
electrodes are covered by plasma synthesized polymeric membranes in the
discharge of a DBD. The sulfonated polystyrene membranes are synthesized by
injecting simultaneously styrene and trifluoromethanesulfonic acid monomers, in
the presence of a carrier gas (Ar or He). The membranes are chemically
characterized by XPS, ToF-SIMS, and FTIR (IRRAS) and their deposition rate is
investigated by SEM.
