Abstract Platinum (Pt) is the most common catalyst in Polymer Electrolyte Membrane Fuel Cells due to its ability effectively promote oxidation of hydrogen and reduction oxygen. However, as a noble metal, use Pt should be minimized. Alloying with low-cost transition metals an effective strategy improve catalytic activity reduce use. In this context, we report on one-step synthesis Platinum/Coppe...

reduced graphene oxide film was synthesized on a glassy carbon electrode by electro reduction of graphene oxide powders in aqueous solution. then platinum nano particles were deposited on reduced graphene oxide film that was deposited on the glassy carbon electrode via electro reduction of platinum salt. the physical morphology of the platinum on reduced graphene oxide film was evaluated by sca...

This paper reviews the chemical and electrochemical depositions of platinum group metals (PGMs) from aqueous solutions. With a brief introduction on the fundamental aspects of chemical/electrochemical depositions, the review describes recent advances in chemical and Abbreviations: CD, cathode current density expressed as amperes per cm2; CE, cathode current efficiency; dc, direct current; DMFC,...

We analyze the controllability and observability (C/O) of the liquid water distribution in the gas diffusion layer (GDL) of a polymer electrolyte membrane fuel cell (PEMFC) using a one-dimensional channel-to-channel unit fuel cell model. This modeling domain is sufficient to illustrate the control objectives and analysis techniques but requires further development for stack level modeling. A co...

Liquid half-cell measurements provide a convenient laboratory method for the determination of relevant parameters electro-catalysts applied in e.g. polymer electrolyte membrane fuel cells. While these may be effective...

In this paper, we experimentally investigated two high temperature polymer electrolyte membrane fuel cell (HT-PEMFC) stacks for their response to the presence of reformate impurities in an anode gas stream. The investigation was aimed at characterizing effects stack level, including humidified conditions and identifying fault features diagnosis purposes. Two HT-PEMFC 37 cells each with active a...

Objectives • Research, develop, assemble, and test a 50 kW net polymer electrolyte membrane (PEM) fuel cell stack system comprised of a PEM fuel cell stack and the supporting gas, thermal, and water management subsystems. The PEM fuel cell stack system will be capable of integration with at least one of the fuel processors currently under development by Hydrogen Burner Technology (HBT) and Arth...