Positive active material for lithium battery, lithium battery having the same and method for producing the same

摘要

A positive active material for lithium battery, includes a lithium-containing amorphous nickel oxide represented by a chemical composition formula of LixNiO2; wherein x is from greater than 0.25 to 2. Preferably, x is from greater than 1 to 2. More preferably, x is from greater than 1.4 to 2. The positive active material may contains cobalt from 2 to 60 mol % {(Co/(Ni+Co)}.