Nonaqueous secondary battery
AssigneeSharp Kabushiki Kaisha
InventorsTakehito Mitate, Motoaki Nishijima
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Abstract
A nonaqueous secondary battery is provided which comprises a positive electrode, a negative electrode and a nonaqueous ion conductor, either one of the positive electrode and the negative electrode containing lithium or a lithium absorbable and desorbable substance as an active material thereof, the other electrode containing a lithium transition-metal nitride of an anti-fluorite type structure as an active material thereof.
Claims8
A nonaqueous secondary battery comprising a positive electrode, a negative electrode and a nonaqueous ion conductor, either the positive electrode or the negative electrode containing lithium or a lithium absorbable and desorbable substance as an active material thereof and the other electrode contains as the active material a lithium transition-metal nitride of an anti-fluorite structure represented by Li.sub.x MnN.sub.4 wherein 5.ltoreq.x.ltoreq.7.6 or by Li.sub.x FeN.sub.2 wherein 2.5.ltoreq.x.ltoreq.3.8.
A nonaqueous secondary battery comprising a positive electrode, a negative electrode and a nonaqueous ion conductor, the negative electrode containing a lithium transition-metal nitride of an anti-fluorite structure as the active material and the positive electrode contains as the active material a chalcogen compound or a transition-metal oxide which is initially subjected to a discharge process.
A nonaqueous secondary battery comprising a positive electrode, a negative electrode and a nonaqueous ion conductor, the negative electrode containing as an active material a lithium transition-metal nitride of an anti-fluorite structure, the positive electrode containing as an active material a lithium-containing manganese dioxide having a composition ratio Li/Mn of not greater than 1/2.
Dependencies are inferred from the claim text.