Method of producing a lithium ion secondary battery and a lithium ion secondary battery produced thereby

摘要

A paste-like active material mixture prepared by mixing an active material powder and a particulate material comprising a polymer soluble in a nonaqueous electrolytic solution is applied, e.g., to collectors (1c, 2c) to a uniform thickness, and then dried to form positive and negative electrodes (1, 2) containing an active material powder and a particulate polymer. The two electrodes (1, 2) are assembled into an electrode laminate (4) into which the foregoing electrolytic solution is then injected.