| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite electricity storage device which secures a sufficient service life from a viewpoint of availability as a secondary battery, and has a large energy capacity and is resistant to over-discharge and thus highly reliable from a viewpoint of availability as a lithium ion capacitor.SOLUTION: The composite electricity storage device 10 has: a lithium ion secondary battery section 11; a lithium ion capacitor section 12; and an electricity storage vessel that houses a composite laminated body wherein the secondary battery section 11 and the capacitor section 12 are laminated. The lithium ion secondary battery section 11 has a structure wherein first positive electrodes 21, first separators 41, and first negative electrodes 31 are laminated. The lithium ion capacitor section 12 has a structure wherein second positive electrodes 26, second separators 42 different from the first separators 41, and second negative electrodes 36 composed of electrode plates 38 different from electrode plates 33 of the first negative electrodes 31. The lithium ion capacitor section 12 is disposed as the outermost layer of the composite laminated body. |
