NICKEL-BASED COMPOSITE OXIDE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY INCLUDING SAME

摘要

The present invention relates to a nickel-based composite oxide for a lithium secondary battery, and a lithium secondary battery including the same, and provides a nickel-based composite oxide for a lithium secondary battery, which comprises: a core part; and at least one tunnel connected from the inside of the core part to the outside thereof, wherein the tunnel has a diameter of 100nm or larger, and the composite oxide further comprises coating layers located inside the tunnel and outside the core part.