LITHIUM-ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

摘要

A lithium-ion secondary battery is provided which has a positive electrode formed using a composition formed of an aqueous solvent and which exhibits superior battery performance. The battery comprises a positive electrode and a negative electrode, and the positive electrode has a positive electrode current collector and a positive electrode mixture layer which is formed on the current collector and which includes at least a positive electrode active material and a hinder. A surface of the positive electrode active material is coated by a hydrophobic coating and the binder dissolves or disperses in the aqueous solvent.