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US 5,851,696 AGranted
Rechargeable lithium battery
AssigneeValence Technology, Inc.
InventorsM. Yazid Saidi, Jeremy Barker
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AssigneeValence Technology, Inc.
InventorsM. Yazid Saidi, Jeremy Barker
Estimating the term…
The present invention provides an electrochemical cell or battery, which has a nonmetal negative electrode (anode). That is, no solid metal active material is used in the cell. Rather than the conventional solid lithium metal anode, the active material of the new anode comprises a compound of vanadium oxide. Accordingly, the lithium cell of the invention comprises a positive electrode and a negative electrode, where the negative electrode comprises a compound of vanadium oxide which in a fully discharged state is represented by the nominal general formula V.sub.6 O.sub.13 or Li.sub.y V.sub.6 O.sub.13, y equal to 0; and, in a fully or partially lithiated, fully or partially charged state, is represented by the nominal general formula Li.sub.y V.sub.6 O.sub.13, where y is greater than 0 and less than or equal to 8. The unique negative electrode of the invention demonstrates exceptional performance without the disadvantages of metallic lithium negative electrodes.
A lithium battery which comprises a positive electrode and a negative electrode, said negative electrode having an active material comprising an oxide of vanadium and said positive electrode having an active material which is a lithium chalcogenide compound different from Li.sub.y V.sub.6 O.sub.13+x, with 0.ltoreq.y<8 and 0<x<2;
A lithium ion battery which comprises:
A rechargeable lithium battery having non-metallic electrode active material, which has a nominal operating potential in the range of about 1 to about 2 volts, and which maintains over 60 percent of its discharge capacity after 80 cycles at a current density of about 0.5 m A/cm.sup.2 ;
Dependencies are inferred from the claim text.