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 کاملSilicon-based Proton Exchange Membrane for Micro Direct Methanol Fuel Cells
This paper presents our research on silicon-based proton exchange membranes for siliconbased micro fuel cell applications. The porous silicon membranes with a thickness of 20-40 m were fabricated. And the porous silicon-based proton exchange membranes were formed by using the combination of the porous silicon membranes and Nafion solution. The proton conductivities of the porous silicon-based P...
متن کاملA Micro Direct Methanol Fuel Cell with Self-pumping of Liquid Fuel
This paper introduces a micro direct methanol fuel cell (μDMFC) with an imbedded self-pumping mechanism to deliver liquid fuel. The fuel is propelled without any power consuming component (e.g., a pump), while removing the CO2 bubbles generated by the fuel-cell electrochemical reaction of the system. Furthermore, the pumping rate is self-regulated by the reaction, i.e., by the load. By eliminat...
متن کاملThe micro-scale analysis of the micro direct methanol fuel cell
In this paper, the behavior of micro-scale effect in a micro direct methanol fuel cell (mDMFC) is investigated through both simulations and experiments. A model is built to describe the methanol distribution in the diffusion layer with different feature sizes. In addition, the dynamic movement of a single CO2 bubble is also simulated to study the two-phase characteristics in the micro channels ...
متن کاملMethanol electro-oxidation on platinum modified tungsten carbides in direct methanol fuel cells: a DFT study.
In exploration of low-cost electrocatalysts for direct methanol fuel cells (DMFCs), Pt modified tungsten carbide (WC) materials are found to be great potential candidates for decreasing Pt usage whilst exhibiting satisfactory reactivity. In this work, the mechanisms, onset potentials and activity for electrooxidation of methanol were studied on a series of Pt-modified WC catalysts where the bar...
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ژورنال
عنوان ژورنال: Renewable and Sustainable Energy Reviews
سال: 2014
ISSN: 1364-0321
DOI: 10.1016/j.rser.2014.03.004