Search Results - "Virkar, Anil V."

The Tetragonal-Monoclinic Transformation in Zirconia: Lessons Learned and Future Trends by Chevalier, Jérôme, Gremillard, Laurent, Virkar, Anil V., Clarke, David R.

“…Zirconia ceramics have found broad applications in a variety of energy and biomedical applications because of their unusual combination of strength, fracture…”
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Conversion Kinetics and Ionic Conductivity in Na-β”-Alumina + YSZ (Naβ”AY) Sodium Solid Electrolyte via Vapor Phase Conversion Process by Zhu, Liangzhu, Virkar, Anil V.

“…Sodium ion batteries have been receiving increasing attention and may see potential revival in the near future, particularly in large-scale grid energy storage…”
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Defect configuration and phase stability of cubic versus tetragonal yttria-stabilized zirconia by Ding, Hepeng, Virkar, Anil V., Liu, Feng

“…Using first-principles calculations, we have carried out a systematic comparative study of the microscopic atomic defect configurations in cubic and tetragonal…”
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Theoretical analysis of the role of interfaces in transport through oxygen ion and electron conducting membranes by Virkar, Anil V.

“…This manuscript examines transport through oxygen ion and electronic conducting membranes including electrode/membrane interfaces by explicitly incorporating…”
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Mechanism of oxygen electrode delamination in solid oxide electrolyzer cells by Virkar, Anil V.

“…An electrochemical model for degradation of solid oxide electrolyzer cells is presented. The model is based on concepts in local thermodynamic equilibrium in…”
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Electrochemical Ostwald ripening of Pt and Ag catalysts supported on carbon by Parthasarathy, Preethy, Virkar, Anil V.

“…Electrochemical Ostwald ripening in Pt and Ag commercial catalysts supported on high surface area carbon is investigated by an electrochemical method. The…”
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A parametric model for solid oxide fuel cells based on measurements made on cell materials and components by Zhu, Liangzhu, Zhang, Lei, Virkar, Anil V.

“…A parametric equation describing polarization in solid oxide fuel cells (SOFC) in terms of experimentally measurable parameters is presented. The equation…”
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Electronic conductivity measurement of yttria-stabilized zirconia solid electrolytes by a transient technique by Zhang, Lei, Zhu, Liangzhu, Virkar, Anil V.

“…A new oxygen permeation technique is developed to measure the electronic conductivity of yttria-stabilized zirconia (YSZ). The permeation cell is a YSZ disc…”
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A simple analysis of current collection in tubular solid oxide fuel cells by Virkar, Anil V., Lange, Fred F., Homel, Michael A.

“…A transmission line analysis is presented for the axial current collection in tubular solid oxide fuel cells (SOFC). Closed form analytical solutions are…”
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Locally developed electronic conduction in a yttria stabilized zirconia (YSZ) electrolyte for durable solid oxide fuel cells by Son, Min Ji, Kim, Min Woo, Virkar, Anil V., Lim, Hyung-Tae

“…In the present work, anode supported solid oxide fuel cells (SOFCs) based on a YSZ single layer electrolyte with locally developed electronic conduction near…”
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A model for degradation of electrochemical devices based on linear non-equilibrium thermodynamics and its application to lithium ion batteries by Virkar, Anil V.

“…► Analyze multi-species transport in electrochemical systems. ► Demonstrate that in membranes, electronic conductivity cannot be set to zero to ensure local…”
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A model for solid oxide fuel cell (SOFC) stack degradation by Virkar, Anil V.

“…Solid electrolytes are increasingly being used in active electrochemical devices such as fuel cells and batteries. Several fuel cells or batteries are…”
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Conductivity of porous Sm2O3-doped CeO2 as a function of temperature and oxygen partial pressure by Wright, James, Virkar, Anil V.

“…Porous samples of Sm2O3-doped CeO2 (samaria-doped ceria, SDC) of composition Sm0.15Ce0.85O2−δ were made by conventional ceramic processing and sintering in air…”
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Reversible high temperature cells for power generation and hydrogen production using mixed ionic electronic conducting solid electrolytes by Virkar, Anil V., Tao, Greg

“…High temperature solid oxide cells can be used both as fuel cells (SOFC) for power generation and as electrolyzer cells (SOEC) for hydrogen generation. Such…”
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Dependence of polarization in anode-supported solid oxide fuel cells on various cell parameters by Zhao, Feng, Virkar, Anil V.

“…The performance of solid oxide fuel cells (SOFCs) is affected by various polarization losses, namely, ohmic polarization, activation polarization and…”
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Fabrication of high-density and translucent Al-containing garnet, Li7−xLa3Zr2−xTaxO12 (LLZTO) solid-state electrolyte by pressure filtration and sintering by Lei, Chong, Shetty, Dinesh K., Simpson, Michael F., Virkar, Anil V.

“…Garnet type LLZTO ceramic oxide is a promising solid-state electrolyte for use in Li-ion batteries because it has good chemical stability, adequate mechanical…”
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High performance solid oxide fuel cell operating on dry gasified coal by Gür, Turgut M., Homel, Michael, Virkar, Anil V.

“…A fluidized coal bed-solid oxide fuel cell (FB-SOFC) arrangement is employed for efficient conversion of dry gasified coal into electricity at 850 °C. It…”
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Transport through mixed proton, oxygen ion and electron/hole conductors: Analysis of fuel cells and electrolyzer cells using Onsager equations by Virkar, Anil V.

“…Steady state transport through mixed proton, oxygen ion and electron/hole conductors is examined in fuel cell, driven fuel cell, and electrolyzer modes. Oxygen…”
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A study of gadolinia-doped ceria electrolyte by electrochemical impedance spectroscopy by LEI ZHANG, FENG LIU, BRINKMAN, Kyle, REIFSNIDER, Kenneth L, VIRKAR, Anil V

“…Samples of Gd2O3-doped CeO2 (GDC) were fabricated by sintering of powder compacts. Impedance spectra were measured from 400 degree C to 675 degree C in air by…”
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High-Thermal-Conductivity Aluminum Nitride Ceramics: The Effect of Thermodynamic, Kinetic, and Microstructural Factors by Jackson, T. Barrett, Virkar, Anil V., More, Karren L., Dinwiddie Jr, Ralph B., Cutler, Raymond A.

“…Improvement in the thermal conductivity of aluminum nitride (AlN) can be realized by additives that have a high thermodynamic affinity toward alumina (Al2O3),…”
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