Journal of Fuel Cell Science and Technology: Recent submissions
Now showing items 41-60 of 854
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Dopant Clustering and Correlated Oxygen Migration in Conditionally Stabilized Zirconia Electrolytes
(The American Society of Mechanical Engineers (ASME), 2015)Molecular dynamics (MD) simulation of yttria/scandiastabilized zirconia (SSZ) with variably distributed Y/Sc dopant ions shows that energy is minimized when the dopants are uniformly spread apart, provided that the lattice ... -
The Synthesis of High Dispersed Ni/Pt/C Nano Electrocatalysts for Oxygen Reduction Reaction
(The American Society of Mechanical Engineers (ASME), 2015)Highdispersed core–shell Ni/Pt/C nanoelectrocatalysts were prepared by “modified polyol process†method. Effect of the experimental parameters, such as the pretreatment of XC72 supports, the method of adding the XC72 ... -
Ambient Temperature Operation of a Platinum Free Direct Formate Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2015)Several reports have been made recently of the direct formate fuel cell (DFFC) operating at hightemperature and using Pt cathode catalyst. In the present work, we demonstrate a Ptfree DFFC employing ACTA HypermecTM 4020 ... -
Hydrodynamic and Heat Transfer Effects of Varying Sparger Spacing Within a Column Photobioreactor Using Computational Fluid Dynamics
(The American Society of Mechanical Engineers (ASME), 2015)This research investigates the placement of spargers on thermofluid effects within a column photobioreactor (PBR) using computational fluid dynamics (CFD). This study compares two configurations, each with three rows of ... -
Control Impacts of Cold Air Bypass on Pressurized Fuel Cell Turbine Hybrids
(The American Society of Mechanical Engineers (ASME), 2015)A pressure drop analysis for a directfired fuel cell turbine hybrid power system was evaluated using a hardwarebased simulation of an integrated gasifier/fuel cell/turbine hybrid cycle, implemented through the hybrid ... -
Electrochemical Characterization of Synthesized Ni–Co and Ni–Co–Fe Electrodes for Methanol Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2015)Pt based materials having high electrocatalytic properties are normally used for the electrodes of the fuel cell. But the cost of the material limits the commercialization of alcoholic fuel cell. NonPt based metals and ... -
Analysis and Optimization of Transient Response of Polymer Electrolyte Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2015)Polymer electrolyte membrane (PEM) fuel cells are well suited for automotive applications compared to other types of fuel cells owing to their faster transient response and lowtemperature operation. Due to rapid change in ... -
Safety Analysis of a Solid Oxide Fuel Cell/Gas Turbine Hybrid System Fueled With Gasified Biomass
(The American Society of Mechanical Engineers (ASME), 2015)The effect of biomass gas on the safety performance of a solid oxide fuel cell (SOFC)/micro gas turbine (GT) hybrid system was studied with consideration of the fuel cell working temperature, fuel cell temperature gradient ... -
Fabrication and Performance of La0.6Sr0.4Co0.2Fe0.8O3−خ´ Infiltrated Yttria Stabilized Zirconia Cathode on Anode Supported Solid Oxide Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2015)The three layers with porous yttriastabilized zirconia (YSZ) backbone/dense YSZ/porous NiO–YSZ were fabricated by tapecasting process, respectively, then laminated together and cofired at 1300 آ°C for 5 h. The cathode ... -
Evaluation of Cathode Air Flow Transients in a SOFC/GT Hybrid System Using Hardware in the Loop Simulation
(The American Society of Mechanical Engineers (ASME), 2015)Thermal management in the fuel cell component of a direct fired solid oxide fuel cell gas turbine (SOFC/GT) hybrid power system can be improved by effective management and control of the cathode airflow. The disturbances ... -
Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane
(The American Society of Mechanical Engineers (ASME), 2015)Proton exchange membranes (PEMs) in operating fuel cells are subjected to varying thermal and hygral loads while under mechanical constraint imposed within the compressed stack. Swelling during hygrothermal cycles can ... -
Study on a Vapor Feed Air Breathing Direct Methanol Fuel Cell Assisted by a Catalytic Combustor
(The American Society of Mechanical Engineers (ASME), 2015)Feeding vaporized methanol to the direct methanol fuel cell (DMFC) helps reduce the effects of methanol crossover (MCO) and facilitates the use of highconcentration or neat methanol so as to enhance the energy density of ... -
Hybrid Direct Carbon Fuel Cell Performance With Anode Current Collector Material
(The American Society of Mechanical Engineers (ASME), 2015)The influence of the current collector on the performance of a hybrid direct carbon fuel cell (HDCFC), consisting of solid oxide fuel cell (SOFC) with a molten carbonate–carbon slurry in contact with the anode, has been ... -
A Review on Graphical Methods for Modeling a Proton Exchange Membrane Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2015)Fuel cell systems represent a promising alternative energy converter. In the past years, researches have been conducted for their modeling, control, and diagnosis. The model should accurately reproduce the behavior without ... -
The Importance of Ion Selectivity of Perfluorinated Sulfonic Acid Membrane for the Performance of Proton Exchange Membrane Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2015)Nafion 212 membrane was subjected to swelling–dehydration (SD) cycles, as a relevant operation condition for direct methanol fuel cells (DMFCs). The major degradation mechanism due to the treatment was found to be sulfonic ... -
Ex Situ Characterization Method for Flooding in Gas Diffusion Layers and Membrane Electrode Assemblies With a Hydrophilic Gas Diffusion Layer
(The American Society of Mechanical Engineers (ASME), 2015)Proper water management is required for the operation of polymer electrolyte fuel cells (PEFCs), in order to maintain the critical balance between adequate membrane hydration and prevention of water flooding in the catalyst ... -
Characterization of Flow Within a Fuel Cell Manifold Subject to Asymmetric Inlet Conditions
(The American Society of Mechanical Engineers (ASME), 2015)Achievement of flow uniformity among cells of a fuel cell stack continues to be an issue in fuel cell design and can affect performance and longevity. While many studies have sought to examine the effects of manifold and ... -
Interface Reactions Between Sealing Glass and Metal Interconnect Under Static and Dynamic Heat Treatment Conditions
(The American Society of Mechanical Engineers (ASME), 2015)Chemical compatibility of sealing glass with metal interconnects is a critical issue for planar solid oxide fuel cell (SOFC). In this paper, interface reactions between a sealing glass and a ferritic metal interconnect ... -
Performance Modeling of a Direct Methanol Fuel Cell Fueled With Methanol and Ethanol
(The American Society of Mechanical Engineers (ASME), 2014)Direct methanol fuel cells (DMFCs) are becoming a choice of a power source in the field of power electronics, and portable devices because of their high energy density. The benefits of using a fuel cell toward the environment ... -
Parametric Sensitivity Tests—European Polymer Electrolyte Membrane Fuel Cell Stack Test Procedures
(The American Society of Mechanical Engineers (ASME), 2014)As fuel cells are increasingly commercialized for various applications, harmonized and industryrelevant test procedures are necessary to benchmark tests and to ensure comparability of stack performance results from different ...