Lithium-ion rechargeable battery

Abstract

The present invention comprises a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte, wherein the positive electrode comprises a positive electrode current collector; and a plurality of positive electrode active material particles, a first binder polymer, and first copper oxide particles (Cu) formed on at least one surface of the positive electrode current collector. x O y The present invention provides a lithium secondary battery in which x and y are natural numbers.