▎ 摘　　要

NOVELTY - A lithium ion secondary battery comprises a positive electrode layer (14) containing a positive electrode collector layer (15), a negative electrode layer containing a negative electrode collector layer (11, 11a, 11b), and a graphene layer (12) on the negative electrode collector layer and the positive electrode collector layer. A solid electrolyte layer (13) is between the positive electrode layer and negative electrode layer. The electrolyte layer contains high molecular compound holding electrolyte solution. USE - A lithium ion secondary battery used for vehicles, integrated circuit card, and a radio frequency tag. ADVANTAGE - The lithium ion secondary battery has improved durability with respect to charging and discharging. DESCRIPTION OF DRAWING(S) - The drawing is a sectional view of the lithium ion secondary battery. Negative electrode collector layer (11, 11a, 11b) Graphene layer (12) Solid electrolyte layer (13) Positive electrode layer (14) Positive electrode collector layer (15)