Patent ID: 9202637
Filing Date: 2015-12-01
Classification: H01G,Y02E

Abstract:
1. A lithium ion capacitor, comprising: a lithium ion capacitor element formed by overlaying a positive electrode sheet and a negative electrode sheet on top of one another with a separator interposed therebetween; an electrolyte solution; a lithium ion supply source; and an outer container that comprises the lithium ion capacitor element and the electrolyte solution, wherein a porous layer is formed on an outer surface of the lithium ion capacitor element has a thickness of less than 1,000 μm, wherein the lithium ion capacitor satisfies expressions (1) and (2): wherein C is a capacitance [kF] of the lithium ion capacitor, R is a direct current resistance value [mΩ] of the lithium ion capacitor, and T is a thickness [μm] of the porous layer, and wherein the lithium ion supply source is disposed in the lithium ion capacitor element such that the lithium ion supply source does not contact the positive electrode sheet and the negative electrode sheet.