LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF

The present invention provides a lithium secondary battery including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, and a gel polymer electrolyte formed by polymerizing an oligomer, wherein one or more electrodes selected from the positive electrode and the negative electrode includes an electrode current collector, an electrode active material layer formed on the electrode current collector, and a coating layer formed on the electrode active material layer and including a first binder, and the first binder is bonded to the gel polymer electrolyte, or a lithium secondary battery including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, and a gel polymer electrolyte formed by polymerizing an oligomer, wherein an electrode active material layer of one or more electrodes selected from the positive electrode and the negative electrode includes a second binder bonded to the gel polymer electrolyte through an epoxy ring-opening reaction.