Modeling ruthenium dissolution in direct-methanol fuel cells
نویسندگان
چکیده
To approach this goal, we develop a detailed 1D model to describe the DMFC on the electrode and cell level, based on the in-house modeling framework DENIS. A two-phase flow model is implemented for the transport in gas diffusion layer (GDL) and catalyst layer (CL) at the anode side, whereas we consider only the gas phase at the cathode side. Electrochemistry is described by multistep mechanisms for the reactions occurring at anode and cathode CL, including adsorbed intermediate species on the platinum and ruthenium surfaces. Furthermore, we employ a detailed membrane model which includes methanol crossover. The cell model can be used to perform steady-state, transient as well as impedance simulations.
منابع مشابه
IV.J.4 Advanced Catalysts for Direct Methanol Fuel Cells
Approach • Develop a methodology that provides high-throughput fabrication and analyses of novel alloy materials of arbitrary composition. • Evaluate multi-component alloys consisting of platinum, ruthenium, nickel and zirconium that are corrosion-resistant in acid for catalytic activity. • Analyze results of polarization studies to develop a rationale for catalyst performance. • Evaluate promi...
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