Lithium secondary battery
First Claim
1. A lithium secondary battery comprising a positive electrode composed of a positive electrode active material comprising an oxide compound comprising at least Li and Ni, and a negative electrode comprising an Li--Ag--Te alloy.
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Abstract
A lithium secondary battery comprising a positive electrode composed of a positive electrode active material comprising an oxide compound comprising at least Li and Ni, and a negative electrode comprising an Li--Ag--Te alloy, a positive electrode active material for a lithium secondary battery, which is composed of an oxide compound represented by the formula: LiNiw Alx Py Oz wherein 0.80<w<1.10, 0<x<0.015, 0<y<0.03 and 1.8≦z≦2.2, and a lithium secondary battery comprising said positive electrode active material. The lithium secondary battery of the present invention shows large charge-discharge capacity, high energy density, less degradation by the repetitive charge-discharge and is superior in cycle property. The positive electrode active material of the present invention, which is composed of an oxide compound represented by the formula: LiNiw Alx Py Oz is economical and superior in the supply of starting materials, and the lithium secondary battery comprising said positive electrode active material is advantageous in that it has high capacity, is superior in cycle property and can be prepared stably at low costs.
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Citations
5 Claims
- 1. A lithium secondary battery comprising a positive electrode composed of a positive electrode active material comprising an oxide compound comprising at least Li and Ni, and a negative electrode comprising an Li--Ag--Te alloy.
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