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Modeling Elementary Heterogeneous Chemistry and Electrochemistry in Solid-Oxide Fuel Cells Huayang Zhu,* Robert J. Kee,* Vinod M. Janardhanan, Olaf Deutschmann,* and David G. Goodwin Engineering Division, Colorado School of Mines Golden, Colorado 80401, USA Institute for Chemical Technology, University of Karlsruhe, Karlsruhe, Germany Engineering and(More)
This paper reports experimental and modeling investigations of thermal methane reforming chemistry within porous Ni–YSZ anode materials. Because the reforming chemistry is difficult to observe directly in an operating fuel cell, a specially designed experiment is developed. In the experiment a 0.75 mm-thick anode is sandwiched between two small co-flowing(More)
A computational model is developed to represent the coupled behavior of elementary chemistry, electrochemistry, and transport in the vicinity of solid-oxide fuel cell three-phase boundaries. The model is applied to assist the development and evaluation of H2 charge-transfer reaction mechanisms for Ni–yttria-stabilized zirconia YSZ anodes. Elementary(More)
This paper discusses model-predictive controllers (MPC) that can incorporate physical knowledge of fuel-cell behavior into real-time multiple-input–multiple-output (MIMO) process-control strategies. The controller development begins with a high-fidelity, transient, physical model that represents the physical and chemical processes responsible for fuel-cell(More)
A new capability is developed that enables the modeling of certain logistics-fuel reformers. The system described in this paper considers a shell-and-tube configuration for which the catalytic reforming chemistry is confined within the tubes. The models are designed to accommodate detailed gas-phase and catalytic reaction kinetics, possibly including(More)
A model-based interpretation of measured equilibrium conductivity and conductivity relaxation is developed to establish thermodynamic, transport, and kinetics parameters for multiple charged defect conducting (MCDC) ceramic materials. The present study focuses on 10% yttrium-doped barium zirconate (BZY10). In principle, using the Nernst-Einstein(More)
A laser-assisted atom-probe-tomographic (LAAPT) method has been developed and applied to measure and characterize the three-dimensional atomic and electronic nanostructure at an yttrium-doped barium zirconate (BaZr0.9Y0.1O3-δ, BZY10) grain boundary. Proton-conducting perovskites, such as BZY10, are attracting intense interest for a variety of energy(More)
Title of Thesis: INTEGRATION OF STEAM REFORMING AND CATALYTIC COMBUSTION IN A SINGLE PLATE REACTOR Fletcher Alexi Robbins, Master of Science, 2004 Thesis Directed by: Associate Professor Dr. Gregory Jackson Department of Mechanical Engineering A novel co-flow heat exchanger intended for volumetrically efficient hydrogen production and utilizing catalytic(More)
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