... overall are uncovered. To investigate the multiphase flows and the interactions between the layers on the anode side of a direct methanol fuel cell (DMFC), a single cell was studied using a two-dimensional model. This multiphase model focuses on the flow mechanism of a single CO 2 gas bubble. The model...

...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...

.... The transportation industry has been identified as one of the major sources of air pollution; hence a potential market for vehicle applications has developed a strong interest in the use of a polymer electrolyte membrane fuel cell (PEMFC). Notable among the fuel cells is direct methanol fuel cell (DMFC), which has...

... to the corrected Fig. 5 direct methanol fuel cells mathematical analysis 25 03 2011 07 04 2011 15 12 2011 15 12 2011 2012 American Society of Mechanical Engineers ...

... ] and Wang et al. [( 21 ), 22 ] reported PBI/H 3 PO 4 (5PRU) based MEAs for high temperature direct methanol fuel cells. They used high catalyst loadings of 4 mg Pt  · cm −2 on both anode (Pt:Ru 1:1 a/o) and cathode (Pt-black). Wang et al. [( 22 )] obtained a current density of 100 mA cm −2 at 0.42 V...

...Mojtaba Parvizi Omran; Mousa Farhadi; Kurosh Sedighi A 3D, single phase steady-state model has been developed for liquid feed direct methanol fuel cell. The model is implemented into the commercial computational fluid dynamics (CFD) software package FLUENT ® v6.2, with its user-defined functions...

... , 1 , pp. 133 – 161 . 10.1002/1615-6854(200107)1:2<133::AID-FUCE133>3.0.CO;2-5 Schultz , T. , Zhou , S. , and Sundmacher , K. , 2001 , “ Current Status of and Recent Developments in the Direct Methanol Fuel Cell ,” Chem. Eng. Technol. 0930-7516 , 24 ( 12 ), pp. 1223...

...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...

...V. B. Oliveira; C. M. Rangel; A. M. F. R. Pinto The direct methanol fuel cell (DMFC) is a promising power source for micro- and various portable electronic devices (mobile phones, PDAs, laptops, and multimedia equipment) with the advantages of easy fuel storage, no need for humidification...

... during ORR than the Pt/C, assessing that these catalysts may function as a methanol-tolerant cathode catalysts in a direct methanol fuel cell. Lamm , A. , and Muller , J. , 2003 , Handbook of Fuel Cells—Fundamentals, Technology and Applications , Vol. 4 , W. Vielstich , A. Lamm...

... 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...

... technology breakthrough improving energy density with a factor of 3–10 compared with current lithium-ion batteries. In particular, the direct methanol fuel cell (DMFC) is an interesting opportunity because of the high energy capacity of methanol and the handling of the fuel making “charging” easy, safe...

... to investigate the water transport characteristics in a passive direct methanol fuel cell (DMFC), taking into account the coexistence of the hydrophilic and hydrophobic pores in the DM, we presented the mechanisms of capillary flow in the mixed-wet DM and provided a comprehensive evaluation of the CPSRs used...

...Sujith Mohan; S. O. Bade Shrestha Direct methanol fuel cells are one of the alternate power sources for the field of power electronics because of their high energy density. The benefits of a fuel cell toward the environment can be greatly improved if the fuel used for its application comes from...

... cells electroless deposition nanoparticles oxidation platinum ruthenium platinum ruthenium deposition fuel cell methanol Direct methanol fuel cells (DMFCs) can have high energy density if concentrated methanol can be used as the fuel. They are potentially useful as a compact power...

...Pengtao Sun; Chaoyang Wang; Jinchao Xu In this paper, a three-dimensional, two-phase transport model of liquid-feed direct methanol fuel cell (DMFC), which is based on the multiphase mixture formulation and encompasses all components in a DMFC using a single computational domain, is specifically...

...Jason C. Ganley; Nana K. Karikari; Dharmaraj Raghavan This paper reports the results of fuel cell performance tests detailing the effects of Ni/Al layered double hydroxide (Ni-LDH) on the performance of alkaline direct methanol fuel cells (DMFCs). It is desirable to enhance the maximum rate...

... 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...

... of an experimental direct methanol fuel cell. Hence a lot of further development and ideas are required to increase the efficiency considerably ( 7 8 11 ). One prerequisite for that is a good diagnostics, in particular a reasonable insight into the distribution of electric currents in the fuel cell. But here...

...Yong-Sheen Hwang; Suk-Won Cha; Hoon Choi; Dae-Young Lee; Seo Young Kim We investigated the optimum flow channel design for direct methanol fuel cells (DMFCs). Especially, we explored the effect of the pressure drop across the inlet and outlet on the performance of the DMFCs with various flow...