Proton exchange membrane fuel cells support materials

Carbon supported Pt and Pt-alloy electrocatalysts form the cornerstone of the current state-of-the-art electrocatalysts for medium and low temperature fuel cells such as phosphoric and proton exchange membrane fuel cells (PEMECs). Electrocatalysis on these nanophase clusters are very different from bulk materials due to unique short-range atomic order and the electronic environment of these cluster interfaces. Studies of these fundamental properties, especially in the context of alloy formation and particle size are, therefore, of great interest. This chapter provides an overview of the structure and electronic nature of these supported... [Pg.521]

Chhina, H. et al. 2009a. Characterization of Nb and W doped titania as catalyst supports for proton exchange membrane fuel cells. Journal of New Materials for Electrochemical Systems 12 177-185. [Pg.67]

Catalyst Support Materials for Proton Exchange Membrane Fuel Cells... [Pg.57]

Imran Jafri, R., Rajalakshmi, N., and Ramaprabhu, S. (2010) Nitrogen doped graphene nanoplatelets as catalyst support for oxygen reduction reaction in proton exchange membrane fuel cell. Journal of Materials Chemistry, 20, 7114-7711. [Pg.88]

Carbon in various forms is commonly used in phosphoric acid fuel cells and proton exchange membrane fuel cells (PEMFCs) as a catalyst support, gas-diffusion media (GDM), and bipolar plate material (Dicks 2006). Among these carbon materials, carbon black is used as a catalyst support for PEMFC apphcation because of its unique pn tolies... [Pg.17]

Abstract To date, microcalorimetry of CO adsorption onto supported metal catalysts was mainly used to study the effects induced by the nature and the particle size of supported metallic clusters, the conditions of pretreatment and the support materials on the surface properties of the supported metallic particles. The present chapter focuses on the employ of adsorption microcalorimetry for studying the interaction of carbon monoxide with platinum-based catalyst aimed to be used in proton exchange membrane fuel cells (PEMFCs) applications. [Pg.429]

The required properties of solid polymer electrolyte membranes may be divided into interfacial and bulk properties [9]. As described above, the interfacial characteristics of these membrane materials are important for the optimum formation of the three-phase boundary. Hence, flow properties, gas solubility, wetting of carbon supported catalyst surfaces by the polymer, etc. are of paramount importance. The bulk properties concern proton conductivity, gas separation, and mechanical properties. This whole ensemble of properties has to be considered and balanced in the development of novel proton-exchange membranes for fuel cell application. [Pg.7]