Preparation and Characterization of Some Lithium Insertion Anodes for Secondary Lithium Batteries
| Autor: | K. M. Abraham, E. B. Willstaedt, D. M. Pasquariello |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Inorganic chemistry chemistry.chemical_element Condensed Matter Physics Alkali metal Electrochemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid Electrochemical cell Anode Crystallinity Crystallography chemistry Electrode Materials Chemistry Lithium |
| Zdroj: | Journal of The Electrochemical Society. 137:743-749 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.2086548 |
| Popis: | The ambient temperature preparation and characterization of Li{sub {ital x}}Fe{sub 2}O{sub 3}, Li{sub {ital x}}WO{sub 2}, and {beta}-LiAl with potential applications as alternative anodes for secondary Li batteries are described. Both {alpha} and {gamma} forms of Fe{sub 2}O{sub 3} were found to insert a maximum of six Li/Fe{sub 2}O{sub 3} both electrochemically and chemically. The potential plateaus associated with the electrochemical reduction of the two forms of Fe{sub 2}O{sub 3} varied slightly. Both {alpha}-Li{sub 6}Fe{sub 2}O{sub 3} and {gamma}-Li{sub 6}Fe{sub 2}O{sub 3} were amorphous and showed a practically useful rechargeable capacity of about 1 equiv of Li at the moderate rate of 0.5 mA/cm{sup 2}. Li{sub {ital x}}WO{sub 2} also loses substantial crystallinity upon Li insertion. However, most of the crystallinity was regained upon removal of the Li. It was found to be capable of cycling nearly 1 equiv of Li at low rates. Several Li-Al alloys having the {beta}-LiAl structure were prepared at ambient temperature from Al powder and Li-naphthalide. The rechargeability of the chemically prepared {beta}-LiAl was poor. |
| Databáze: | OpenAIRE |
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