Uacj Corporation

Uacj Foil Corporation

The Furukawa Electric Co., Ltd.

Tsugio Kataoka

Osamu Kato

Sohei Saito

Yukiou Honkawa

Satoshi Yamabe

Mitsuyuki Wasamoto

Hidekazu Hara

Takahiro Iida

Yasumasa Morishima

Kenichi Kadowaki

Takayori Ito

Tatsuhiro Yaegashi

Mitsuya Inoue

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

Current collector, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device having superior shut down function are provided. According to the present invention, a current collector having a resin layer on at least one side of a conductive substrate is provided. Here, thermoplastic resin particles substantially free of a conductive agent are dispersed in a thermosetting resin base material containing the conductive agent to structure the resin layer; a value of mass ratio given by (thermoplastic resin particles)/(conductive agent) is 0.3 to 1.5; and a value given by (average thickness of conductive agent)/(average thickness of thermoplastic resin particles) is 0.3 to 4.0.

Current collector, electrode structure, nonaqueous electrolyte battery and electrical storage device, and method for producing current collector

Provided are a current collector which has an excellent high-rate property and exerts a sufficient safety function when employed in a secondary battery or a capacitor, as well as an electrode, a secondary battery or a capacitor in which said current collector is employed. According to the invention, a current collector is provided which comprises: metal foil; and a conductive layer with a film thickness of 0.1 &#x3bc;m to 10 &#x3bc;m formed on a surface of said metal foil. Here, said conductive layer includes a conductive material and a binder material. A melting point of said binder material is 80&#xb0; C. to 150&#xb0; C. Further, said binder material shows, in differential scanning calorimetry (DSC) in a range from room temperature to 200&#xb0; C., one or more endothermic peaks in the heating-up process. In a case where said binder material shows two or more endothermic peaks, each difference between said peaks is 15&#xb0; C. or more. Moreover, said binder material shows one or more exothermic peaks in the cooling-down process. In a case where said binder material shows only one exothermic peak, said exothermic peak falls within a range of 50 to 120&#xb0; C., and a width at half maximum of said exothermic peak is 10&#xb0; C. or less. On the other hand, in a case where said binder material shows two or more exothermic peaks, a maximum exothermic peak among said exothermic peaks falls within a range of 50 to 120&#xb0; C., and a width at half maximum of said exothermic peak is 10&#xb0; C. or less.

Current collector, electrode, secondary battery and capacitor

A current collector, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device capable of providing superior shut down function are provided. According to the present invention, a current collector having a resin layer on at least one side of a conductive substrate, wherein: the resin layer has a thermoplastic resin dispersed in a thermosetting resin base material, the thermoplastic resin encapsuling a conductive agent; a value given by (average thickness of the conductive agent)/(average thickness of the thermoplastic resin) is 0.5 to 3; the conductive agent is formulated so that a value of volume % given by (conductive agent)/(conductive agent+thermoplastic resin) is 10 to 50%; and formulation ratio of the thermoplastic resin is 10 to 65%, is provided.

Growing community of inventors

Kusatsu, Japan

Tsugio Kataoka