Showa Denko K.k.

Showa Denko Kabushiki Kaisha

Showa Denka K.k.

Showda Denko K.k.

Masahiro Ohmori

Hidenori Nakamura

Masayuki Sanbayashi

Tadashi Hamanaka

Akihiko Kotera

Hitoshi Yokouchi

Chiaki Sotowa

Takashi Ohkubo

Katsutoshi Tamura

Hiroyuki Takahashi

Jun Tanaka

Ryuji Monden

Nobuo Uotani

Chozo Inoue

Tamotsu Yamashita

Takashi Ogihara

Kasumi Nakamura

Noriko Murase

Masayoshi Nobiki

Mayumi Miyazawa

Masatoshi Kunisawa

A secondary-battery current collector comprising an aluminum foil and a film containing an ion-permeable compound and carbon fine particles formed thereon or a secondary-battery current collector comprising an aluminum foil, a film containing an ion-permeable compound and carbon fine particles formed thereon as the lower layer, and a film containing a binder, carbon fine particles and a cathodic electroactive material formed thereon as the upper layer, a production method of the same, and a secondary battery having the current collector are provided.

Secondary-battery current collector, secondary-battery cathode, secondary-battery anode, secondary battery and production method thereof

In this anode for a secondary battery, method for producing same, and secondary battery, an anode active material is laminated on a surface of a metal foil, the anode active material contains at least titanium dioxide, and the titanium dioxide contains a Brookite crystal phase and contains an amorphous phase in a ratio of 1 vol % to 20 vol %.

Anode for secondary battery, method for producing same, and secondary battery

This method for producing an anode active material for a secondary battery is provided with a step for forming titanium dioxide by means of hydrolysis by adding a titanium-containing compound to an acidic aqueous solution, and furthermore, by means of adding a compound containing an alkaline earth metal and a condensed phosphate, the surface of the titanium dioxide is covered by the condensed phosphate containing the alkaline earth metal in a manner so that the amount of elemental phosphorus atoms and the amount of alkaline earth metal are each in the range of 0.1 to 10 mass % with respect to the mass of titanium dioxide, thus synthesizing the anode active material ().

Method for producing anode active material for secondary battery, anode active material for secondary battery, method for producing anode for secondary battery, anode for secondary battery, and secondary battery

An electricity storage device including at least one electrode having one metal tab lead and plural electrode plates. The electrode plate includes a metal foil, an undercoat layer formed on one surface or both surfaces of the metal foil, and an active material layer formed on a surface of the undercoat layer. The undercoat layer includes a carbon material and the undercoat layer has a coating weight per unit area of one surface of 0.01 to 3 g/m. A sum total thickness of the metal foils in the electrode plates is 0.2 to 2 mm. The electrode plates are welded to each other in a portion where the undercoat layer is formed and no active material layer is formed. Further, at least one of the electrode plates is welded to the metal tab lead in a portion where the undercoat layer is formed and no active material layer is formed.

Electric storage device and method for producing the same

A collector for an electric double layer capacitor including a conductive sheet, and a film adhered on surface of the conductive sheet and including carbon fine particle and polysaccharide and/or cross-linked polysaccharide. An electrode for an electric double layer capacitor including a collector having a conductive sheet and a film adhered on surface of the conductive sheet, and a film including activated carbon and adhered on surface of the film of the collector. The film of the collector includes carbon fine particle and polysaccharide and/or cross-linked polysaccharide. An electric double layer capacitor including an electrode, a separator, and an electrolyte. The electrode includes a collector having a conductive sheet and a film adhered on surface of the conductive sheet, and a film including activated carbon and adhered on surface of the film of the collector. The film of the collector includes carbon fine particle and polysaccharide and/or cross-linked polysaccharide.

Electric double layer capacitor

A solution or dispersion of an ion-permeable compound, a carbon fine particle a, and a solvent is coated on a conductive sheet such as an aluminum foil, the coat is dried to form a film a, which allows to obtain a collector for an electric double layer capacitor. A solution or dispersion of a binder, a carbon fine particle b, an activated carbon b, and a solvent is coated on the film a, the coat is dried to form a film b, which results in obtaining an electrode for an electric double layer capacitor. The electrode is piled on a separator, and immersed in an electrolytic solution to obtain an electric double layer capacitor.

A solution or dispersion of an ion-permeable compound, a carbon fine particle a, and a solvent is coated on a conductive sheet such as an aluminum foil, the coat is dried to form a film a. which allows to obtain a collector for an electric double layer capacitor. A solution or dispersion of a binder, a carbon fine particle b, an activated carbon b, and a solvent is coated on the film a, the coat is dried to form a film b, which results in obtaining an electrode for an electric double layer capacitor. The electrode is piled on a separator, and immersed in an electrolytic solution to obtain an electric double layer capacitor.

An aqueous titanium oxide-dispersed sol comprising titanium oxide particles dispersed in water, said sol comprising chloride ions in an amount of 50 to 10,000 ppm by weight as the chlorine element. Titanium tetrachloride is hydrolyzed to form an aqueous titanium oxide-dispersed sol and the chloride ion concentration thereof is controlled. Another aqueous titanium oxide-dispersed sol comprising brookite-type titanium oxide particles dispersed in water, said titanium oxide particles having an average particle size of not more than 0.5 &#x3bc;m and a specific surface area of not less than 20 m/g. Addition of titanium tetrachloride to hot water at 75 to 100&#xb0; C. followed by hydrolysis at 75&#xb0; C. to the boiling point of the mixture.

Particles, aqueous dispersion and film of titanium oxide, and preparation thereof

A perovskite titanium-containing composite oxide particle having a composition represented by general formula (I), where the specific surface area is about 10 to about 200 m/g, the specific surface area diameter Dof primary particles defined by formula (II) is about 10 to about 100 nm, and a D/Dratio of the average particle size Dof secondary particles to Dis about 1 to about 10:M(TiO)&#x2003;&#x2003;(I)wherein M is at least one of Ca, Sr, Ba, Pb, or Mg,=6&#x2003;&#x2003;(II)wherein &#x3c1; is the density of the particles, and S is the specific surface area of the particles is disclosed. The present invention has a small particle size and excellent dispersion properties, so that the particle is suitable for application to functional materials.

Perovskite titanium-type composite oxide particle and production process thereof

An aqueous dispersion of titanium oxide particles comprising chloride ion, and a Br&#xf8;nsted base other than chloride ion, preferably at least one kind of ion selected from nitrate ion and phosphate ion. Preferably the titanium oxide particles are predominantly comprised of brookite titanium oxide particles. The aqueous titanium oxide dispersion is prepared by hydrolyzed titanium tetrachloride in the presence of at least one kind of a Br&#xf8;nsted acid. A thin film formed from this aqueous titanium oxide dispersion exhibits good photo-catalytic activity, transparency and adhesion to a base material.

Titanium oxide dispersion, thin film and process for producing these

A food container on which surface titanium oxide particles are fixed, where titanium oxide particles may contain brookite crystals, the material of which the food container is constructed may be stainless steel, and the titanium oxide particles may be bonded using a sintering aid, a binder or both. When the food container is made of glass, satisfactory mechanical strength of the container can be maintained even when the thickness of a wall of the container is reduced. Since titanium oxide particles can be fixed onto a surface of a food container at a temperature as low as 20 to 450&#xb0; C. by use of a sintering aid, a binder or both thermal deformation of glass forming the food container can be prevented.

Food container using titanium oxide particle and production method thereof

A perovskite titanium-containing composite oxide particle have a composition represented by general formula (I), where the specific surface area is about 10 to about 200 m/g, the specific surface area diameter Dof the primary particles defined by formula (II) is about 10 to about 100 nm, and a D/Dratio of the average particle size Dof secondary particles to Dis about 1 to about 10:M(TiO)&#x2003;&#x2003;(I)

An object of the present invention is to provide a transparent noise-barrier wall which is slow to foul, easy to clean even when fouled, and capable of maintaining these effects over a long period of time. The transparent noise-barrier wall has brookite titanium dioxide substantially existing on the surface. The titanium dioxide particles preferably contain about 20% by mass or more of brookite titanium dioxide.

Transparent noise-barrier wall

A perovskite titanium-containing composite oxide particle having a composition represented by general formula (I), where the specific surface area is about 10 to about 200 m/g, the specific surface area diameter Dof primary particles defined by formula (II) is about 10 to about 100 nm, and a D/Dratio of the average particle size Dof secondary particles to Dis about 1 to about 10:M(TiO)&#x2003;&#x2003;(I)

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Chiba, Japan

Masahiro Ohmori