Aion Co., Ltd.

Gunma University

Aionco, Inc.

Hidehiko Tsukada

Hiroshi Miyaji

Tadashi Kawaguchi

Soshi Shiraishi

Kimiyasu Onda

Yukiko Endo

Yuuichi Shimazaki

Takashi Yamanaka

A sponge roller is made of a polyvinyl acetal porous resin material having elasticity in a wet state, includes a roller in an approximate cylinder form and a plurality of protrusions formed integrally on an outer peripheral surface of the roller, and rotates the multiple protrusions to make contact with a surface to be cleaned so as to clean the surface. The polyvinyl acetal porous resin material constituting the sponge roller contains a cationic functional group.

Cleaning sponge and cleaning method

First, the present invention involves adding a curing catalyst to a phenolic resin, polyvinyl alcohol, a pore-forming agent, and a cross-linking agent, and mixing, casting, heating, and drying the same. Next, the plate-shaped porous phenolic resin obtained thereby which has uniform consecutive macropores having an average pore diameter in the range of 3 to 35 &#x3bc;m and formed in a three-dimensional network pattern is immersed with an organic solvent. Thereafter, this block is extracted and pressure is applied thereto. It is possible to obtain plate-shaped activated carbon for use in an electrode of a power-storage device by carbonizing and activating a block which has undergone this procedure by keeping the same at an increased temperature.

Activated carbon for use in electrode of power-storage device, and method for producing same

An activated carbon for an electrode of a power storage device of the present invention has uniform consecutive macropores, and a pore size distribution centered within a range of 1.5 to 25 &#x3bc;m, a specific surface area within a range of 1,500 to 2,300 m/g, a micropore volume within a range of 0.4 to 1.0 mL/g, and an average micropore width within a range of 0.7 to 1.2 nm. Provided is an activated carbon for an electrode of a power storage device suitable for an electric double layer capacitor that has high capacitance during charging and discharging at high current density and excellent endurance against charging at a high voltage of 3 V or more and a lithium-ion capacitor having excellent endurance against charging at a high voltage of 4 V or more.

Activated carbon for electrode of power storage device and method for manufacturing activated carbon for electrode of power storage device

A cleaning sponge rolleris made of a polyvinyl acetal porous material having elasticity in a wet state, and includes a roller bodyin an approximate cylinder form, and a plurality of protrusionsformed integrally on an outer peripheral surfaceof the roller body, and rotates the multiple protrusionsto make contact with a surface to be cleaned so as to clean the surface. Outer surfaces of the protrusionsrespectively have a top outer surface(interior exposed surface) making contact with the surface to be cleaned while cleaning in a state where internal structures of the protrusionsare exposed.

Growing community of inventors

Gunma, Japan

Hidehiko Tsukada