Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Carbon corrosion"”.
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Iridium oxide supported on graphitized carbon for use as reversal tolerant anodes in pem fuel cells
… of the cell. During cell voltage reversal, carbon oxidation and water electrolysis occur at the anode to maintain the supply of protons and electrons to the cathode. These reactions are nonspontaneous and consume energy from the membrane electrode assembly (MEA), causing irreversible damage …
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Electrocatalytic activities of supported Pt nanoparticles for low-temperature fuel cell applications
… (NPs) supported on high surface area carbon as the catalyst. In addition, the voltage loss due to the anode reaction kinetics in alkaline FCs (AFCs) remains unknown to the FC society, unlike for the proton exchange membrane fuel cell (PEMFC) case, where the loss due to the anode …
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Model electrode structures for studies of electrocatalyst degradation
… of nanoparticles of Pt or Pt-based alloys on carbon supports. Understanding the role of the nanoparticle size and structure on the catalytic activity and degradation is needed to optimize the fuel cell performance and reduce the noble metal loading. Electrocatalyst degradation is believed to …
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Low PGM PtCo alloy catalysts for low loading Polymer Electrolyte Membrane Fuel Cells
… characteristics (such as platinum loading, carbon to metal ratio and particle size), as well as fuel cell operating conditions. To establish an ideal low PGM MEA design, this thesis investigated two commercial PtCo catalysts (PtCoU30 and PtCoT50). Physical and electrochemical …
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Synthesis and characterization of Pt/TiO2/C composite catalysts for fuel cells prepared using a glucose modifier
… Catalysts supported on high surface area carbon black are widely used in low-temperature fuel cells. In PEMFCs, these catalyst materials can be exposed to high potential and low pH values, resulting in irreversible loss of activity that will limit the useful lifetime of the cell, …
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Study of catalysts with high stability for proton exchange membrane fuel cells
… particles were loaded on two different kinds of carbon supports, nano graphene sheets and functionalized carbon black/graphene hybrid were developed by the liquid phase reaction. The crystal structure of two kinds of catalysts was characterized by X-ray diffractometer (XRD). The morphology and …
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Next-generation ionomers for proton exchange membrane fuel cells From catalyst¿ionomer interactions to membrane¿electrode assembly performance and durability
L'abstract è presente nell'allegato / the abstract is in the attachment