Comparison with other secondary cells and influence of micro- and macro-structural alterations on the cathode performance
Li/Li/sub 1-x/V/sub 3/O/sub 8/ cells have been compared with analogous cells based on TiS/sub 2/, V/sub 6/O/sub 13/, and ..beta..-Na/sub 0.17/V/sub 2/O/sub 5/ cathodes. The results have demonstrated that this bronze can be ranked among the most promising cathode materials for high rate rechargeable Li cells. This has encouraged attempts aimed at improving the electrochemical performance of the bronze through substitution of V with such transition metals as Cr and Mo, and substitution of Li with Na. None of these substituted materials performed better than the parent compound. On the other hand, controlled H/sub 2/O intercalation within the layers resulted in an increased interlayer distance and in higher capacities. A remarkable improvement in cell performance at high rate (10 mA/cm/sup 2/) was obtained with a new technique at cathode preparation.
- Research Organization:
- Dipartimento di Chimica, Facolta di Ingegneria, Universita di Roma, Rome
- OSTI ID:
- 6539022
- Journal Information:
- J. Electrochem. Soc.; (United States), Vol. 133:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CATHODES
MICROSTRUCTURE
PERFORMANCE TESTING
METAL-METAL OXIDE BATTERIES
CAPACITY
CHROMIUM
COMPARATIVE EVALUATIONS
LAYERS
LITHIUM
MOLYBDENUM
SODIUM
TITANIUM SULFIDES
VANADIUM OXIDES
WATER
ALKALI METALS
CHALCOGENIDES
CRYSTAL STRUCTURE
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
HYDROGEN COMPOUNDS
METALS
OXIDES
OXYGEN COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TESTING
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM COMPOUNDS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries
250902 - Energy Storage- Batteries- Performance & Testing