Uacj Corporation

Uacj Foil Corporation

Kenichi Kadowaki

Satoshi Suzuki

Masakazu Seki

Tomohiko Furutani

Koichi Ashizawa

Kenji Yamamoto

Osamu Kato

Sohei Saito

Yukiou Honkawa

Mitsuyuki Wasamoto

Satoshi Yamabe

Tsugio Kataoka

A current collector which is suitable for discharging and charging at a large current density is provided. The present invention provides a current collector including a conductive substrate and a conductive resin layer provided on one side or both sides of the conductive substrate. The conductive resin layer contains a soluble nitrocellulose-based resin and a conductive material.

Current collector, electrode structure, nonaqueous electrolyte battery, electrical storage device, and nitrocellulose resin material

Provided is a technique to confirm the performance of the conductive resin layer of a current collector without actually preparing an electrode structure, a non-aqueous electrolyte battery, an electrical double layer capacitor, a lithium ion capacitor, or an electrical storage device, and to confirm the performance of the conductive resin layer easily with high accuracy by a non-destructive test. A current collector includes a conductive substrate and a resin layer possessing conductivity, the resin layer being formed on at least one side of the conductive substrate. The resin layer possessing conductivity contains a resin and a conductive material containing carbon as a main component. When the color tone of the surface of the resin layer possessing conductivity is specified with L*a*b* color system, L* is 60 or lower, a* is &#x2212;1.0 to 1.0, and b* is &#x2212;1.0 to 3.0.

Collector and electrode structure, non-aqueous electrolyte cell, electrical double layer capacitor, lithium ion capacitor, or electrical storage device using same

An object of the present invention is to provide a current collector which can decrease the internal resistance of a non-aqueous electrolyte battery, be used suitably for a non-aqueous electrolyte battery such as a lithium ion secondary battery and the like or for an electrical storage device such as a lithium ion capacitor and the like, and improve high rate characteristics. According to the present invention, a current collector which is structured by forming a resin layer possessing conductivity on at least one side of a conductive substrate is provided. The resin layer contains a chitosan-based resin and a conductive material, and the water contact angle of the surface of the resin layer measured by &#x3b8;/2 method in a thermostatic chamber at 23&#xb0; C. is 5 degrees or more and 60 degrees or less. In addition, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device which use the current collector are provided.

Collector, electrode structure, non-aqueous electrolyte cell, and electrical storage device

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Chuo-ku, Japan

Kenichi Kadowaki