Manufacturing method of lithium complex oxide comprising cobalt or nickel

摘要

The invention provides a manufacturing method of a lithium complex oxide, comprising the steps of 1) atomizing and pyrolyzing an aqueous or alcohol solution of compounds containing metallic salts constituting a lithium cobalt complex oxide or a lithium nickel complex oxide, and 2) annealing said lithium cobalt complex oxide or said lithium nickel complex oxide to increase the average particle diameter thereof to between about 1 and 5 micrometers and adjust the specific surface area thereof to between 2 and 10m<2>/g. The lithium complex oxide provided by this method is homogeneous and enables a long cycle life to withstand repeated charging and discharging and a high level of storage stability when used as an cathode active material of a secondary lithium battery.