Development Trends of Direct Methanol Fuel Cells
نویسندگان
چکیده
منابع مشابه
Liquid methanol concentration sensors for direct methanol fuel cells
Liquid-fed direct methanol fuel cells (DMFCs) are one of the most promising candidates for portable power electronics and automotive pplications due to their potentially high-energy density, simple storage, and distribution of the fuel. The concentration of methanol in the fuel irculation loop of a DMFC system is an important operating parameter, because it determines the electrical performance...
متن کاملOptimal Concentration Control for Direct Methanol Fuel Cells
Two modifications to a reference direct methanol fuel-cell (DMFC) system are considered to improve methanol fuel utilisation. Fuel utilisation can be optimised by minimising the parasitic methanol crossover by manipulating methanol concentration in the fuel cells. Simulations of the two systems indicate that there is considerable potential to increase fuel utilisation for dynamic concentration ...
متن کاملModeling ruthenium dissolution in direct-methanol fuel cells
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...
متن کاملIV.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...
متن کاملNovel Anode Catalyst for Direct Methanol Fuel Cells
PtRu catalyst is a promising anodic catalyst for direct methanol fuel cells (DMFCs) but the slow reaction kinetics reduce the performance of DMFCs. Therefore, this study attempts to improve the performance of PtRu catalysts by adding nickel (Ni) and iron (Fe). Multiwalled carbon nanotubes (MWCNTs) are used to increase the active area of the catalyst and to improve the catalyst performance. Elec...
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ژورنال
عنوان ژورنال: Electrochemistry
سال: 2002
ISSN: 1344-3542,2186-2451
DOI: 10.5796/electrochemistry.70.915