A5089497364- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Advanced Battery Technologies Research
- Membrane-based Ion Separation Techniques
- Advancements in Solid Oxide Fuel Cells
- Advanced battery technologies research
- Conducting polymers and applications
- Analytical Chemistry and Sensors
- Corrosion Behavior and Inhibition
- Advanced Battery Materials and Technologies
- Electric and Hybrid Vehicle Technologies
- Advanced Control Systems Optimization
- Electric Vehicles and Infrastructure
- Hydrogen Storage and Materials
- Molecular Junctions and Nanostructures
- Refrigeration and Air Conditioning Technologies
- Perovskite Materials and Applications
- Process Optimization and Integration
- Advanced Combustion Engine Technologies
- Nanopore and Nanochannel Transport Studies
- Industrial Technology and Control Systems
- Semiconductor materials and devices
- Hybrid Renewable Energy Systems
- Membrane Separation Technologies
- Industrial Automation and Control Systems
Ford Motor Company (United States)
2015-2022
Ohio University
2019
University of Michigan
2011-2015
University of California, Irvine
2009
UC Irvine Health
2008
University of Windsor
2007
Putian University
2006
This paper investigates the effects of dead-ended anode (DEA) operation on electrode carbon corrosion Proton Exchange Membrane (PEM) fuel cell. A reduced order isothermal model is developed focusing species concentration along channel and associated membrane phase potential. explains, can be used to quantify, behavior during DEA a PEM The presence oxygen in channel, although normally less than 5% molar fraction, creates H2/O2 front as N2 water accumulate at end hydrogen depleted channel....
This paper presents a 2D, fully coupled and comprehensive transient model that accounts for micro-structural features of various cell layers. The benefits from state the art sub-models reaction kinetics incorporates polymer relaxation dynamics. Furthermore, mixed wettability is utilized to simulate two phase conditions in porous validated with experimental data under conditions. A simulation study presented investigate impact operating temperature relative humidity on response. effects...
A computationally efficient model toward real-time monitoring of automotive polymer electrolyte membrane (PEM) fuel cell stacks is developed. Computational efficiency achieved by spatio-temporal decoupling the problem, developing a new reduced-order for water balance across electrode assembly (MEA), and defining variable cathode catalyst utilization that captures trade-off between proton mass transport limitations without additional computational cost. Together, these considerations result...
This two-part series develops a framework for effective parameterization of polymer electrolyte membrane (PEM) fuel cell models with limited and non-invasive measurements. In the first part, systematic procedure identifiability analysis is presented, where recently developed model analyzed sensitivity its output predictions to variety structural fitting parameters. achieved by conducting local analyses about several points in parameter space obtain sensitivities that are more representative...
Support carbon corrosion has been considered a major degradation mechanism impacting the fuel cell performance. A support accelerated stress test (AST) that consists of potential cycling between 1.0 V and 1.5 at 35 °C 70 °C, respectively performed Ford to evaluate durability five membrane electrode assemblies (MEAs), which were made from suppliers’ catalyst coated membranes (CCMs) containing different supports, loadings compositions, ionomer/carbon (I/C) ratios, ionomer equivalent weights...
A transient 1+1 D model has been developed for carbon corrosion during fuel cell start-up. The considers the species transport in anode channel and catalyst layer, double-layer pseudo capacitances, multiple coverage on Pt which influences reaction kinetics. Model simulations analysis have performed focusing kinetics including rate, contributions from effects of initial state at cathode, temperature, O2 diffusivity. It found that remaining amount rather than H2 front, is key factor cathode...
The hydration/dehydration cycling of the membrane during fuel cell operation and resulting mechanical stress are in part responsible for failures a polymer electrolyte membrane. To thoroughly investigate behaviors under in-situ cyclic conditions, this paper, we have interfaced comprehensive two-dimensional transient transport model with viscoelastic-plastic model. is used to produce spatiotemporal profiles water content temperature an operating cell, which then sent calculate parameters...
In this study, a three-dimensional numerical model, based on the volume-of-fluid (VOF) method, was developed to investigate water transport characteristics in cathode of proton exchange membrane fuel cell (PEMFC) taking into account deformation gas diffusion layer (GDL). Simulations are carried out with different inlet flow rates, amount liquid GDL, positions droplet channel, and contact angles GDL channel surfaces. Two mechanisms leaving observed. One is driven by surface tension when rate...
Three protocols of accelerated startup and shutdown (SU/SD) test were investigated: with air supply soak to both anode cathode (air-SU/SD), hydrogen protected (H 2 -SU/SD), a load -SU/SD load). The performance losses, electrochemical surface area (ECSA) reduction, catalyst layer degradation characterized compared for these SU/SD protocols. Air-SU/SD protocol showed much more severe loss than ones, which confirmed the benefits protection. temperature effect on air-SU/SD was significant in...
The second part of this two-part study develops a systematic framework for parameter identification in polymer electrolyte membrane (PEM) fuel cell models. utilizes the extended local sensitivity results first to find an optimal subset parameters identification. This is achieved through optimization algorithm that maximizes well-known D-optimality criterion. data are then used experimental design (OED) ensure resulting experiments maximally informative purpose To make problem computationally...