Electrochemical tests on the spinel Li[V2]O4 were carried out in lithium cells. The recharge efficiency was measured for x less-than-or-equal-to 2.1 in 'Li1+xV2O4' where 'Li1+xV2O4' refers to the overall composition of the working electrode and not necessarily to a single-phase product; the efficiency amounts to 80-85% for compositions ranging between 0.5 less-than-or-equal-to x less-than-or-equal-to 1.8. A cycling experiment carried out at the C/2 rate in prototype lithium cells showed that an almost constant capacity of approximately 0.10 A h g-1 could be sustained for nearly 500 cycles, using voltage limits of 1.8 V and 3.0 V. A cell cycled at -10-degrees-C at the C/4 rate delivered a constant capacity of approximately 0.08 A h g-1 over 75 cycles; this corresponds to 73% of the ambient temperature performance.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
|Titolo:||FURTHER ELECTROCHEMICAL STUDIES ON LI/LIV2O4 SECONDARY CELLS|
|Data di pubblicazione:||1991|
|Appartiene alla tipologia:||01a Articolo in rivista|