...Nathan Metzger; Ivan Vlassiouk; Sergei Smirnov; Gabriel Mariscal; Ryan Spragg; Xianglin Li The two main technical limitations of direct methanol fuel cells (DMFCs) are the slow kinetic reactions of the methanol oxidation reaction (MOR) in the anode and the crossing over of unreacted methanol...

...Alireza Bayat; Nicholas Maus; Faramarz Gordaninejad A three-dimensional, full-scale, single-phase finite element model has been developed for a liquid-fed direct methanol fuel cell (DMFC) with serpentine flow patterns. Equations for conservation of mass, momentum, and species are coupled...

... manuscript received August 12, 2013; published online December 27, 2013. Assoc. Editor: Umberto Desideri. 08 02 2013 12 08 2013 High temperature direct methanol fuel cells (DMFCs) using polybenzimidazole (PBI) membranes could improve the energy density of portable power sources...

... methanol fuel cell (DMFC) operating in the temperature range of 125–175 °C. There was good agreement between experimental and model data for the effect of temperature and oxygen/air pressure on cell performance. The fuel cell performance was relatively poor, at only 16 mW cm −2 peak power density using...

... the hybrid system with an FC unit, 14 kg versus 8 kg , respectively, there is significant logistic burden when utilizing a FC system due to its methanol refueling requirement. fuel cells DMFC RMFC sensors, batteries Unattended ground sensors (UGS) systems are tactical intelligence...

...Brenda L. García-Díaz; Jennifer R. Patterson; John W. Weidner Studying the performance of a direct methanol fuel cell (DMFC) is complicated by the complex interactions of kinetic and transport processes. As a result, changes in one aspect of the cell have consequences in other aspects, which...

..., Technology and Application , Vol. 3 , W. Vielstich , A. Lamm , and H. A. Gasteiger , eds., Wiley , Chichester , p. 894 . Aricò , H. A. , Srinivasan , S. , and Antonucci , V. , 2001 , “ DMFCs: From Fundamental Aspects to Technology Development ,” Fuel Cells 0532-7822...

...Shinn-Dar Wu; Chang-Pin Chou; Ay Su; Jenn-Jiang Hwang This paper aims to analyze the membrane electrode assembly (MEA) of the direct methanol fuel cell (DMFC) in order to provide a reference for the design of DMFC. The slow kinetics of methanol oxidation and whether the anode should be hydrophobic...

... , H. , Xin , Q. , Li , W. , Zhou , Z. , Jiang , L. , Yang , S. , and Sun , G. , 2004 , “ An Improved Palladium-Based DMFCs Cathode Catalyst ,” Chem. Comm. , 7 ( 23 ), pp. 2776 – 2777 . 10.1039/b409539a Shao , M. H. , Sasaki , K. , and Adzic , R. R...

... of complex stack designs and to verify the practicability of the new fabrication for fuel cells. The honeycomb shape methanol reservoir and cathode structure design of a direct methanol fuel cell (DMFC) and the complex flow distributor design of a monopolar air-breathing proton exchange membrane fuel cell...

... it is consumed, and the CO 2 gas produced must be continuously removed through the anode GDL to avoid blockage of reaction sites and to reduce polarization in the anode ( 13 ). Direct methanol fuel cells (DMFCs) are candidates for portable power sources due to their low operating temperature...

... dynamical perturbations. In Sec. 5 we apply our results to an experimental DMFC to make all the results of the previous sections quantitative. The conclusion ends this paper. The heart of a fuel cell is the MEA containing the electrolytic layers and the layers where the catalytic reactions...

.... microstructure hydrophobic micro-pillared structure electrode PEMFC DMFC These researches indicate that the increase of the number of possible reaction sites by the use of PFSI, PTFE-C, and Pt ∕ C in the catalyst layer depends very strongly on their relative composition, fabricating...