POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING SAME

摘要

The present invention relates to a positive electrode for a lithium secondary battery and a lithium secondary battery including the same. The positive electrode for the lithium secondary battery of the present invention includes: a current collector; a first mixing layer which is laminated on the current collector and is formed by mixing olivine-type lithium iron phosphate cathode active material powders with a binder; and a second mixing layer which is laminated on the first mixing layer and is formed by mixing the olivine-type lithium iron phosphate cathode active material powders with the binder, wherein a specific surface area of the olivine-type lithium iron phosphate cathode active material powders of the second mixing layer is at most 0.8 times the specific surface area of the olivine-type lithium iron phosphate cathode active material powders of the first mixing layer. The positive electrode for the lithium secondary battery in the present invention provides high stability, has high energy density, and can prolong longevity thereof.