...Zheng Miao; Bin Hu; Ya-Ling He; Jinliang Xu; Xianglin Li This study has developed a two-dimensional, two-phase transport model to investigate the transport characteristics in direct methanol fuel cells (DMFCs) using platinum group metal (PGM)-free cathode catalysts. The model considered anisotropic...

...Nathaniel Metzger; Archana Sekar; Jun Li; Xianglin Li The gas flow of carbon dioxide from the catalyst layer (CL) through the microporous layer (MPL) and gas diffusion layer (GDL) has great impacts on the water and fuel management in direct methanol fuel cells (DMFCs). This work has developed...

...Jinghui Jiang; Xianda Sun Constructing the ordered catalyst layer is one of the most effective strategies to maximize the catalyst utilization in direct methanol fuel cells (DMFCs). To gain insight into the mass and charge transports in ordered catalyst layer, herein, a two-dimensional two-phase...

...: Jacob Brouwer. 23 03 2014 27 10 2014 25 11 2014 Feeding vaporized methanol to the direct methanol fuel cell (DMFC) helps reduce the effects of methanol crossover (MCO) and facilitates the use of high-concentration or neat methanol so as to enhance the energy density of the fuel...

... February 6, 2014; published online March 13, 2014. Editor: Nigel M. Sammes. 26 12 2013 06 02 2014 The present work is performed to evaluate the heat transfer performance of a heat exchanger used in a direct methanol fuel cell. Because of material constraints and performance...

... the electrocatalytic current density while the presence of Pb inhibits the methanol oxidation. platinum modified electrode direct methanol fuel cell sodium carbonate solution In recent years, the rapid developments of portable electronic devices demand new power sources with higher energy densities...

...J. Mergel; H. Janßen; M. Müller; J. Wilhelm; D. Stolten Direct methanol fuel cells (DMFCs) are attractive for various applications, above all, however, as replacements for batteries or accumulators. They may be used in different power classes. A market analysis indicated that the use of a DMFC...

...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...

...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...

...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...

...Yean-Der Kuan; Chia-Hao Chang The printed circuit board (PCB)-based direct methanol fuel cell (DMFC) package is a novel manufacturing and assembly process, which is full potential in mass production, and very limited literatures make study on the effects of the related process parameters. The hot...

...Ming-San Lee; Long-Jeng Chen; Min-Fa Hung; Ming-Yuan Lo; Shan-Jay Sue; Chin-Hung Lo; Yung-Pin Wang Novel designs of a cylindrical and a flat portable direct methanol fuel cell (DMFC) have been proposed in this research. Experimental cells have also been fabricated. Their maximum power output...

...Guo-Bin Jung; Ay Su; Cheng-Hsin Tu; Fang-Bor Weng; Shih-Hung Chan The flow-field design of direct methanol fuel cells (DMFCs) is an important subject about DMFC performance. Flow fields play an important role in the ability to transport fuel and drive out the products ( H 2 O , CO 2 ) . In general...

... to be considered in evaluating direct methanol fuel cell (DMFC) performances and repeatability of measurements. This work confirms that to compare experimental performances of fuel cells, the measurements shall be characterized by traceability, repeatability, reproducibility, and uncertainty. 29 11 2005...

... sensors, and security cameras. A micro power source could be the direct methanol fuel cell system (DMFC). An important aspect of this system is the precise control of the concentration of the alcohol-water solution fed to the anode. Different detection principles were taken into consideration...

... Membrane Fuel Cell Direct Methanol Fuel Cell Several scheduled dates for the marketing of major fuel cell products have been postponed despite the significant progress in performance as well as other important aspects of a proton exchange membrane fuel cell (PEMFC) made in the last two decades...