Recent Studies on Methanol Crossover in Liquid-Feed 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 کاملAerosol Feed Direct Methanol Fuel Cell
U.S. PATENT DOCUMENTS 4,729,931 A * 311988 Grimble ...................... 429117 5,047,299 A * 911991 Schockling .................. 429120 5,164,060 A * 1111992 Eisman et al. ................ 429112 5,169,730 A * 1211992 Reichner et al. .............. 429120 5,527,631 A * 611996 Singh et al. .................. 429120 5,561,000 A 1011996 Dirven et al. 5,582,632 A 1211996 Nohr et al. 5,593,721 A ...
متن کاملUsing Electrospinning-Based Carbon Nanofiber Webs for Methanol Crossover Control in Passive Direct Methanol Fuel Cells
Methanol crossover (MCO) significantly affects the performance of a direct methanol fuel cell (DMFC). In order to reduce its effect, this study presents in-house carbon nanofiber webs (CNWs) used as a porous methanol barrier for MCO control in a passive DMFC. The CNW is made from polyacrylonitrile (PAN) by using electrospinning and heat treatment. The impacts of PAN concentration and carbonizin...
متن کاملAssessment of Electrochemical Methods for Methanol Crossover Measurement through PEM of Direct Methanol Fuel Cell
It is important to have accurate, reliable, and convenient techniques for determining the methanol crossover rate through the polymer electrolyte membranes of fuel cells. In this work, various electrochemical techniques, namely; cyclic voltammetry, chronoamperometry and potentiometry, have been used to measure the methanol crossover rates using Nafion 117 membrane. The purpose of using differen...
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: ECS Proceedings Volumes
سال: 1998
ISSN: 0161-6374,2576-1579
DOI: 10.1149/199827.0380pv