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Electro-deposited platinum on activated multiwall carbon nanotubes: Single-cell tests, morphological and electrochemical characterizations

TitoloElectro-deposited platinum on activated multiwall carbon nanotubes: Single-cell tests, morphological and electrochemical characterizations
Tipo di pubblicazionePresentazione a Congresso
Anno di Pubblicazione2009
AutoriCemmi, A., Paoletti C., Pozio A., and Serra Emanuele
Conference NameEFC 2009 - Piero Lunghi Conference, Proceedings of the 3rd European Fuel Cell Technology and Applications Conference
Parole chiavecarbon, Carbon nanotubes, Deposition, Diffusion in gases, Electrochemical characterizations, Electrochemical electrodes, Electrochemical measurements, Electrodes, Fuel cells, Galvanostatic deposition, Gas diffusion electrodes, Multiwalled carbon nanotubes (MWCN), Nano-structured electrodes, Nanostructured particles, Operational parameters, Platinum, Polyelectrolytes, Polymer electrolyte fuel cells, Proton exchange membrane fuel cells (PEMFC), Scanning electron microscopy, Yarn
Abstract

This work is focused on the electro-crystallization of Pt nanostructured particles on activated multiwall carbon nanotubes (MWCNTs) containing substrate to produce polymer electrolyte fuel cells gas diffusion electrodes. An activation procedure to enhance the reactivity of multiwall carbon nanotubes surface toward electro-deposition has been studied and optimized. Electrochemical single-and multi-pulsed galvanostatic deposition has been applied defining the best operational parameters leading to a highly nanostructured electrode morphology. Electrochemical measurements (in half-cell configuration) and polarization curves in 5 cm2 single-cell station have been carried out together with morphological analysis by means of scanning electron microscopy. Very promising results in term of maximum specific power density values similar or better than those of standard E-TEK electrode, prepared by conventional powder-type chemical technique, have been obtained for deposition of platinum particles on MWCNTs substrate electrodes, despite the extremely low amount of catalyst (up to 3 times lower than that of commercial electrodes).

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84924794960&partnerID=40&md5=f4c7ab0fb7c760d1c5ecad55c091ff6e
Citation KeyCemmi2009327