Plate-like particle for positive electrode active material of lithium secondary battery, positive electrode active material film of lithium secondary battery, production method thereof, production method of positive electrode active material of lithium secondary battery, and lithium secondary battery

摘要

Provided is a lithium secondary battery having improved capacity, durability, and rate characteristics. A plate-like particle or film for a positive electrode active material of a lithium secondary battery containing cobalt and lithium and having a layered rock salt structure, wherein the (003) plane is oriented so as to intersect the plate surface.