Journal of Fuel Cell Science and Technology: Recent submissions
Now showing items 121-140 of 854
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Humidification Effects of Proton Exchange Membrane Fuel Cell With Conventional and Interdigitated Flow Field
(The American Society of Mechanical Engineers (ASME), 2013)A threedimensional and steadystate model was developed to explore the effects of fuel gas humidification on cell performance for conventional and interdigitated flow fields in proton exchange membrane fuel cells (PEMFCs). ... -
Studies on the Reduction Mechanism of Oxygen on Ag/C Catalysts in Alkaline Solutions
(The American Society of Mechanical Engineers (ASME), 2013)Carbonsupported silver (Ag/C) catalysts with different Ag contents are prepared using the Ag (I) coordination polymer, [Ag(C7H6NO2)(C6H12N4)(H2O)]n. The mechanism and activity of the oxygen reduction reaction (ORR) on these ... -
Computational Fluid Dynamics Modeling of a Catalytic Flat Plate Fuel Reformer for On Board Hydrogen Generation
(The American Society of Mechanical Engineers (ASME), 2013)A catalytic flat plate fuel reformer offers better heat integration by combining the exothermic catalytic combustion reaction on one side and the endothermic catalytic reforming reaction on the other side. In this study, ... -
1 Hexanol Based Catalyst Inks for Catalyst Layer Preparation for a DMFC
(The American Society of Mechanical Engineers (ASME), 2013)The catalyst ink preparation for a catalyst layer production by screen printing for a direct methanol fuel cell (DMFC) is evaluated. Among a large variety of solvents 1hexanol was chosen for the preparation due to its ... -
Numerical Investigation of Water and Temperature Distributions for Open Cathode Polymer Electrolyte Fuel Cell Stack With Edge Cooling
(The American Society of Mechanical Engineers (ASME), 2013)Portable and motive applications of opencathode polymer electrolyte fuel cells (PEFCs) require not only good stack performance but also a light and compact design. In this context, we explore how edge cooling with three ... -
Fabrication of Y2O3 Doped Zirconia/Gadolinia Doped Ceria Bilayer Electrolyte Thin Film SOFC Cells of SOFCs by Single Pulsed Laser Deposition Processing
(The American Society of Mechanical Engineers (ASME), 2013)An 8 mol. % Y2O3doped zirconia/10mol. % GdO2doped ceria (YSZ/GDC) bilayer electrolyte and a Gd0.5Sr0.5CoO3 (GSCO) cathode were deposited by a singleprocessing, pulsed laser deposition (PLD) method to fabricate anode ... -
Analysis of Residual and Operational Thermal Stresses in a Planar SOFC
(The American Society of Mechanical Engineers (ASME), 2013)A structural model has been developed for analysis of residual stresses for anodeand electrolytesupported planar solid oxide fuel cells (SOFC). This model was also used for analysis of thermally induced stresses during ... -
Electrochemical and Exergetic Modeling of a Combined Heat and Power System Using Tubular Solid Oxide Fuel Cell and Mini Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2013)In this article, a combined heat and power (CHP) system using a solid oxide fuel cell and mini gas turbine is introduced. Since a fuel cell is the main power generating source in hybrid systems, in this investigation, ... -
Development of a Hybrid System of Molten Carbonate Fuel Cell and Homogeneous Charge Compression Ignition Engine for Distributed Power Generation
(The American Society of Mechanical Engineers (ASME), 2013)A new hybrid system of molten carbonate fuel cell (MCFC) and homogenous charge compression ignition (HCCI) engine is suggested to improve the overall system efficiency and performance. In the proposed system, the catalytic ... -
Effect of Nitric Acid on Modified Mesoporous Carbon as Catalyst Support of Direct Methanol Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2013)Nitric acid modified Mesoporous carbon (CMK3) supported Pt particles have been prepared by chemical reduction with NaBH4 as a reducing agent. Energy dispersive spectrometer shows that the catalysts have some oxygenic ... -
Maximum Power Point Tracking With Reactant Flow Optimization of Proton Exchange Membrane Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, a fuel cell (FC) maximum power point tracking (MPPT) with fuel flow optimization is presented. The aim of this study is to extract the maximum power from a FC at different fuel flow rates and to protect the ... -
Electrocatalytic Oxidation of Methanol on an Pd/Pyy/Niad atoms Electrode
(The American Society of Mechanical Engineers (ASME), 2013)In this paper we study the effect of Niadatoms on the activity of a Pd/Pyy nanocomposite anode, we find that the catalytic activity of an anode towards methanol oxidation increased by threefold in the presence of Niadatoms. -
Comparison of Some Parameter Estimation Techniques Applied to Proton Exchange Membrane Fuel Cell Models
(The American Society of Mechanical Engineers (ASME), 2013)The functioning and the achievable power of a proton exchange membrane fuel cell (PEMFC) are determined by several parameters simultaneously. Part of these cannot be measured directly. They must be estimated with parameter ... -
Performance Optimization and Selection of Operating Parameters for a Solid Oxide Fuel Cell Stack
(The American Society of Mechanical Engineers (ASME), 2013)In this study, a model of current densities for a tencell solid oxide fuel cell (SOFC) stack is learned and developed due to the utilization of an improved backpropagation neural network (BPNN). To build the learning data ... -
Improvement of Microbial Fuel Cell Performance by Using Nafion Polyaniline Composite Membranes as a Separator
(The American Society of Mechanical Engineers (ASME), 2013)The characteristics of four new protonconducting membranes, Nafion112/polyaniline composite membranes of various compositions, are studied for application as membrane separators in microbial fuel cells. The composite ... -
A Model of a High Temperature Direct Methanol Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2013)A steadystate, isothermal, onedimensional model of a direct methanol proton exchange membrane fuel cell (PEMFC), with a polybenzimidazole (PBI) membrane, was developed. The electrode kinetics were represented by the ... -
Design and Experimental Investigation of a Heat Pipe Supported External Cooling System for HT PEFC Stacks
(The American Society of Mechanical Engineers (ASME), 2013)A 10cell hightemperature polymer electrolyte fuel cell (HTPEFC) stack with an active cell area of 200 cm2 has been built up and tested with regard to the temperature distribution from cell to cell and over the active area ... -
Hybrid Fuel Cell Gas Turbine System Design and Optimization
(The American Society of Mechanical Engineers (ASME), 2013)Ultrahigh efficiency, ultralow emission fuel cell gas turbine (FC/GT) hybrid technology represents a significant breakthrough in electric power generation. FC/GT hybrid designs are potentially fuel flexible, dynamically ... -
Preparation of Electrocatalysts for Polymer Electrolyte Fuel Cell Cathodes From Au Pt Core Shell Nanoparticles Synthesized by Simultaneous Aqueous Phase Reduction
(The American Society of Mechanical Engineers (ASME), 2013)Electrocatalysts for polymer electrolyte fuel cell (PEFC) cathodes were prepared using AuPt coreshell nanoparticles. Polyvinylpyrrolidone (PVP)protected coreshell nanoparticles were synthesized by simultaneous aqueousphase ... -
Comparison of Performance Losses Between Ultrasonic and Thermal Bonding of Membrane Electrode Assemblies in Proton Exchange Membrane Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2013)Ultrasonic bonding of lowtemperature PEM membrane electrode assembly (MEA) components together has been shown previously to cut both cycle time and energy input of that manufacturing step by over an order of magnitude as ...