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Your search keyword '"Vaughey, J. T."' showing total 101 results
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101 results on '"Vaughey, J. T."'

4. A (sub)3 Tt (sub)5 phases Sr (sub)3 Sn (sub)5, Ba (sub)3 Pb (sub)5, and La (sub)3 Sn (sub)5. Structure and bonding in a series of isotypic metallic compounds with increased electron count and their comparison with the nominal zintl phase La (sub)3 In (sub)5

Author

Klem, Michael T., Vaughey, J. T., Harp, Jason G., and Corbett, John D.

Subjects
Chemistry, Inorganic -- Research, Coordination compounds -- Physiological aspects, Metal bonding -- Physiological aspects, Rare earth metals -- Physiological aspects, Tin -- Physiological aspects, Lead -- Physiological aspects, Anions -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the compounds containing square pyramidal tin and lead Tt (sub)5 polyanions. Results indicate that these compounds have been obtained via the direct fusion of the alkaline-earth or rare-earth metal-tetrel systems followed by slow cooling.

Published
2001

8. A New Layered Copper Oxide: LaSrCuAlO5

Author

Wiley, J. B., primary, Markham, L. M., additional, Vaughey, J. T., additional, McCarthy, T. J., additional, Sabat, M., additional, Hwu, S.-J., additional, Song, S. N., additional, Ketterson, J. B., additional, and Poeppelmeier, K. R., additional

Published
1988
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46. Studies of LaSn3 as a Negative Electrode for Lithium-Ion Batteries.

Author

Vaughey, J. T., Thackeray, M. M., Shin, D., and Wolverton, C.

Subjects
INTERMETALLIC compounds, TIN, LANTHANUM, LITHIUM-ion batteries, ELECTRODES, DENSITY functionals, ELECTROCHEMISTRY
Abstract

The intermetallic compound LaSn3 has been explored as a possible negative electrode for lithium-ion batteries. A combination of experiment and density functional theory calculations provides evidence that the structure is intolerant to lithium insertion and that the electrochemical reaction occurs via a displacement mechanism. Experiment shows that approximately six Li react initially with LaSn3 calculated energetics suggest that during the reaction La3Sn5 and lithiated tin are formed and that the electrode operates by delithiation and relithiation of the Sn particles within an inert lanthanum-tin matrix. LaSn3 electrodes provide a reversible specific capacity of 200-250 mAh/g, whereas In-substituted electrodes that form a solid solution with LaSn3, such as La5n27ln03, yield a slightly lower capacity. [ABSTRACT FROM AUTHOR]

Published
2009
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48. Thin-Film Cu6Sn5 Electrodes: Synthesis, Properties, and Current Collector Interactions.

Author

Il-Seok Kim, Vaughey, J. T., and Aucielloa, O.

Subjects
THIN films, MAGNETRONS, RADIO frequency, STAINLESS steel, ELECTRODES, ELECTROCHEMISTRY
Abstract

Thin-film Cu6Sn5 anodes were created using a radio frequency magnetron sputtering technique. Several films were studied demonstrating different compositional variables, namely, (i) as-deposited, nanocrystalline Cu6Sn5 on stainless steel, (ii) annealed Cu6Sn5 on stainless steel, and (iii) Cu6Sn5/Pt film electrodes. The annealed Cu6Sn5 films showed enhanced grain growth compared to the as-deposited samples, were found to have higher crystallinity, and exhibited a lower lithium cycling capacity than the nanocrystalline samples. Films incorporating a Pt underlayer between the current collector and the Cu6Sn5 film were evaluated and showed a 30% higher cycling capacity than the annealed samples or typical bulk laminates. Understanding the interaction between the interlayer and the displaced copper is postulated to be an important variable in extending cycle life. [ABSTRACT FROM AUTHOR]

Published
2008
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