Journal of Fuel Cell Science and Technology: Recent submissions
Now showing items 801-820 of 854
-
Flow Structures in a U-Shaped Fuel Cell Flow Channel: Quantitative Visualization Using Particle Image Velocimetry
(The American Society of Mechanical Engineers (ASME), 2005)Flow through an experimental model of a U-shaped fuel cell channel is used to investigate the fluid dynamic phenomena that occur within serpentine reactant transport channels of fuel cells. ... -
A Multiphysics Modeling Study of (Pr0.7Sr0.3)MnO3±δ∕8mol% Yttria-Stabilized Zirconia Composite Cathodes for Solid Oxide Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2005)Solid oxide fuel cells (SOFCs) are expected to be a future power source. Simulation analyses of SOFCs can help to understand well the interactive functions among the multiphysics phenomena in ... -
Oxygen Transport in YSZ∕LSM Composite Materials
(The American Society of Mechanical Engineers (ASME), 2005)To date, a number of ceramic oxides with the perovskite structure have been proposed as membrane materials for the selective separation of oxygen and the partial oxidation of hydrocarbons due ... -
Stability and Reactivity of LSGM Electrolytes With Nickel-Based Ceramic Cathodes
(The American Society of Mechanical Engineers (ASME), 2005)The surface of La0.9Sr0.1Ga0.8Mg0.2O3−δ (LSGM 9182) has been examined through the use of secondary-ion mass spectrometry before and after surface modification by mechanical polishing. It was found ... -
Modeling the Performance of a Tubular Solid Oxide Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2005)In this paper, we develop two computational models for the electrical performance of the tubular solid oxide fuel cell designed by Siemens Westinghouse Corporation. The first model makes simplifying ... -
Optimal SOFC Size Design for Minimal Cost of Electricity Achievement
(The American Society of Mechanical Engineers (ASME), 2005)SOFC numerical simulations and experiments are a low cost method in achieving adequate performance to penetrate the market. Most of the efforts are at the present focused on components, single ... -
Water Balance in PEM and Direct Methanol Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2005)Water management is a critical design issue for polymer electrolyte membrane (PEM) fuel cells, because the PEM must be maintained at the proper water content to remain ionically conducting ... -
The Development of a Heterogeneous Composite Bipolar Plate of a Proton Exchange Membrane Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2005)A new high performance, low cost heterogeneous composite bipolar plate has been developed. Unlike the well publicized carbon composite bipolar plate, in which graphite powder and plastics are ... -
Simulation-Aided PEM Fuel Cell Design and Performance Evaluation
(The American Society of Mechanical Engineers (ASME), 2005)A multi-resolution fuel cell simulation strategy has been employed to simulate and evaluate the design and performance of hydrogen PEM fuel cells with different flow channels. A full 3D model ... -
Comparison of Methodologies for Determination of Fracture Strength of 8mol% Yttria-Stabilized Zirconia Electrolyte Materials
(The American Society of Mechanical Engineers (ASME), 2005)The widely used yttria-stabilized zirconia (YSZ) electrolyte is subjected to thermal and external stresses under operation, so that the enhancement of the mechanical properties is an important ... -
A New PtRu Anode Formed by Thermal Decomposition for the Direct Method Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2005)New PtRu catalyst anodes for methanol oxidation were prepared by a thermal decomposition method on titanium mesh supports. The supports employed were: Single layer (titanium mesh), double layer ... -
Dynamic Modeling on the Hybrid Molten Carbonate Fuel Cell-Gas Turbine Bottoming Cycle
(The American Society of Mechanical Engineers (ASME), 2005)The intention of this paper is to present the dynamic models for the molten carbonate fuel cell (MCFC)-gas turbine hybrid cycle. This paper analyzes the performance of various components in ... -
Application of an Anode Model to Investigate Physical Parameters in an Internal Reforming Solid-Oxide Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2005)A one-dimensional model of chemical and mass transport phenomena in the porous anode of a solid-oxide fuel cell, in which there is internal reforming of methane, is presented. Macroscopically ... -
Discharge of a Segmented Polymer Electrolyte Membrane Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2005)We present a transient model for an electrically segmented polymer electrolyte membrane (PEM) fuel cell which is run until extinction from a finite oxygen supply. The experimental cell is divided ... -
Efficient Parallel Simulation of Direct Methanol Fuel Cell Models
(The American Society of Mechanical Engineers (ASME), 2005)Fuel cells, as highly efficient and environment-friendly power sources, have attracted ever-increasing research and development in the past few decades. Mathematical modeling and simulation are ... -
Optimization of the Operating Parameters of a Proton Exchange Membrane Fuel Cell for Maximum Power Density
(The American Society of Mechanical Engineers (ASME), 2005)The performance of fuel cells can be significantly improved by using optimum operating conditions that maximize the power density subject to constraints. Despite its significance, relatively scant ... -
Fabrication Using High-Energy Ball-Milling Technique and Characterization of Pt-Co Electrocatalysts for Oxygen Reduction in Polymer Electrolyte Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2005)This work discusses the fabrication and characterization of Pt-Co electrocatalysts for polymer electrolyte membrane fuel cells (PEMFC) and electrocatalysis of the oxygen reduction reaction. Two ... -
Study of Efficiency Improvements in a Fuel-Cell-Powered Vehicle Using Water Electrolysis by Recovering Regeneration Energy and Avoiding Partial Load Operation
(The American Society of Mechanical Engineers (ASME), 2005)Improvements in efficiency of a fuel-cell-powered vehicle have been studied using water electrolysis as the energy storage mechanism. Three methods are proposed for this purpose: 1. The reformer ... -
Experiences With the First Japanese-Made Solid-Oxide Fuel-Cell System
(The American Society of Mechanical Engineers (ASME), 2005)A solid-oxide fuel-cell (SOFC) system based on planar type cells and a cylindrical stack design was examined for small-scale stationary applications. To reduce the operating temperature of ... -
Novel Testing Method for Fuel Cell Hardware Design and Assembly
(The American Society of Mechanical Engineers (ASME), 2005)A simple, low-cost testing method is proposed for fuel cell hardware development. A perforated aluminum foil with an array of small holes covered with carbon paper or cloth replaces the membrane ...