Cataler Corporation

Stella Chemifa Corporation

Advanced Capacitor Technologies, Inc.

Tetsuya Kume

Yasuyuki Higaonna

Kazuaki Yanagi

Yuko Matsumura

Makoto Takeuchi

Tetsuo Nishida

Sojiro Kon

Yasunari Iwata

Yoshinobu Sakakibara

Achieved is an electricity storage device having a low internal resistance and a high energy density. In a pore distribution, which is obtained for a carbon material using a BJH method and is plotted on a graph with a pore diameter D on the abscissa and a derivative &#x394;V/&#x394;D of a pore volume per unit mass or unit volume with respect to the pore diameter D on the ordinate, a ratio M1/M2 of the maximum value M1 of the derivative &#x394;V/&#x394;D in an interval of the pore diameter D from 10 to 100 nm with respect to the maximum value M2 of the derivative &#x394;V/&#x394;D in an interval of the pore diameter D from 2 to 10 nm is 1.5 or more.

Carbon material and electricity storage device

A carbonaceous material used as a polarizable active material in an electric double layer capacitor is characterized in that, when measured by an electron spin resonance method without adding any additives, the obtained peak line width is 2 mT or less, and the peak intensity, which is converted into a number of unpaired electrons per 1 g, is 1&#xd7;10or more. A method for producing the carbonaceous material includes removing residual functional groups from the carbonaceous material so that reactions between the residual functional groups and the electrolytic liquid are suppressed when forming a capacitor.

Carbonaceous material for electric double layer capacitor, electric double layer capacitor and process for producing carbonaceous material

Disclosed is an electrical storage device having excellent safety and high battery capacity. Specifically disclosed is an electrical storage device comprising at least a positive electrode having a positive electrode active material layer and a positive electrode collector, a negative electrode having a negative electrode active material layer and a negative electrode collector, a separator and an organic electrolyte solution. This electrical storage device is characterized in that the negative electrode active material layer is composed of a metal complex oxide which absorbs and desorbs lithium ions, the positive electrode active material layer contains a carbonaceous material having a layered crystal structure, and the interlayer distance dof the layered crystal structure in the carbonaceous material is within the range of 0.36-0.38 nm.

Electric storage element

A method for preparing a carbon material for an electrode is provided that comprises a step for activating a mixture of a carbonous main material and a conductive additive.

Method for preparing carbon material for electrode of electrochemical devices

Disclosed is an apparatus for processing an exhaust gas containing an alkaline substance, the exhaust gas being emitted when activating a carbon material with an alkaline substance. The apparatus includes a humidified-gas preparing device for preparing a humidified gas, which exhibits a dew point of 25&#xb0; C. or more; a gas mixing device for mixing the humidified gas with the exhaust gas at a temperature equal to or greater than the dewpoint of the humidified gas, thereby generating a hydroxide of metallic alkali; and a trapping device for trapping the generated hydroxide out of the mixture gas of the humidified gas and the exhaust gas.

Method of processing alkali-activation exhaust gas

Disclosed is a method for processing an exhaust gas containing an alkaline substance, the exhaust gas being emitted when activating a carbon material with an alkaline substance. The method includes the steps of preparing a humidified gas, which exhibits a dew point of 25&#xb0; C. or more, by mixing an inert gas with water vapor, generating a hydroxide of metallic alkali by mixing the humidified gas with the exhaust gas; and trapping the generated hydroxide out of the mixture gas of the humidified gas and the exhaust gas.

Growing community of inventors

Kakegawa, Japan

Tetsuya Kume