Patent attributes
A lithium secondary battery provided by the present invention includes an electrode body (80) having a structure in which a positive electrode (10) and a negative electrode (20) are laminated, with a separator (30) interposed therebetween, and a porous insulating layer (40) obtained by filling and molding insulating particles is formed on the surface of at least one of the positive electrode (10) and the negative electrode (20) on the side facing the separator (30), wherein insulating particles having a tap density of 0.4 g/cm3 to 0.9 g/cm3 are used as the insulating particles that compose the porous insulating layer (40), and moreover a pressure (90) that is applied in the direction of the lamination to the electrode body (80) is set to a range of 4 kgf/cm2 to 50 kgf/cm2.
