Uacj Corporation

The Furukawa Electric Co., Ltd.

Uacj Foil Corporation

Tatsuhiro Yaegashi

Takahiro Koyama

Hidekazu Hara

Takahiro Iida

Yasumasa Morishima

Osamu Kato

Sohei Saito

Yukiou Honkawa

Satoshi Yamabe

Tsugio Kataoka

Tatsuya Mimura

Takayori Ito

Mitsuya Inoue

There are provided: a surface-treated aluminum material including an aluminum base material and an alkali alternating current electrolytic oxide coating film formed on at least a part of a surface of the aluminum base material, wherein the alkali alternating current electrolytic oxide coating film includes a porous-type aluminum oxide coating film layer formed on a surface side and a barrier-type aluminum oxide coating film layer formed on a base material side, and plural working grooves perpendicular to the direction of plastic working are formed; a method of producing the surface-treated aluminum material; a bonded body of the surface-treated aluminum material and a member to be bonded, including the surface-treated aluminum material and the member to be bonded, such as resin; and a method of producing the bonded body.

Surface-treated aluminum material and method for manufacturing same; and bonded body of surface-treated aluminum material and bonding member comprising said surface-treated aluminum material, and bonding member such as resin, and method for manufacturing said bonded body

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

Growing community of inventors

Chiyoda-ku, Japan

Tatsuhiro Yaegashi