Kabushiki Kaisha Toshiba

Miho Maruyama

Kenji Todori

Reiko Yoshimura

Tsukasa Tada

Yasuyuki Hotta

Masakazu Yamagiwa

Ko Yamada

Kou Yamada

Yoshihiko Nakano

Jun Tamura

Seiichi Suenaga

Fumihiko Aiga

Yoshihiro Akasaka

Wu Mei

Takashi Kishi

Yasuhiro Goto

Takayuki Fukasawa

Wen Zhang

Masako Nakahashi

Kiyoshi Osabe

Shoji Niwa

Rika Takigawa

A nonaqueous electrolyte solution secondary battery of the embodiment includes an exterior material, a nonaqueous electrolyte solution, a positive electrode, a negative electrode and a separator sandwiched between the positive electrode and the negative electrode. The nonaqueous electrolyte solution is charged in the exterior material. The nonaqueous electrolyte solution contains at least one of sulfone-based compounds represented by formula 1, a partially fluorinated ether represented by a molecular formula of formula 2, and at least one of lithium salts. The positive electrode is housed in the exterior material. The positive electrode contains a composite oxide represented by LMnNiMOas a positive electrode active material (wherein 0&#x2264;x&#x2264;1, 0&#x2264;(y+z)&#x2264;0.15, and M represents one, or two or more selected from Mg, Al, Ti, Fe, Co, Ni, Cu, Zn, Ga, Nb, Sn, Zr and Ta). The negative electrode is housed in the exterior material.

Nonaqueous electrolyte secondary battery and battery pack

A method using a chemical synthesis method to produce a metallic nanoparticle inorganic composite having fine metallic nanoparticles that are uniformly dispersed at a high density in a solidified matrix, a metallic nanoparticle inorganic composite, and a plasmon waveguide using this composite are provided. Thus, a method including: preparing a precursor solution, applying the precursor solution onto a substrate, and then hydrolyzing the precursor solution to form an oxide film having fine pores, bringing the oxide film into contact with an acidic aqueous solution of tin chloride to chemically adsorb Snions in the fine pores, removing an excess of the Snions, bringing the oxide film into contact with an aqueous metal chelate solution to precipitate metallic nanoparticles in the fine pores, and removing an excess of ions of the metal is provided.

Method of producing a metallic nanoparticle inorganic composite, metallic nanoparticle inorganic composite, and plasmon waveguide

A process for producing a metallic-nanoparticle inorganic compositeincludes an oxide film formation step in which an oxide filmhaving micropores is formed on a substrate by a sol-gel method in which a metal alkoxide is partly hydrolyzed by the action of an acid catalyst, a tin deposition step in which the oxide filmis brought into contact with an acidic aqueous solution of tin chloride, an excess Snion removal step in which Snions are removed from the micropores, a metallic-nanoparticle deposition step in which the oxide filmis brought into contact with an aqueous solution of a metal chelate to deposit metallic nanoparticlesin the micropores, and an excess metal ion removal step in which metal ions are removed from the micropores; and a metallic-nanoparticle inorganic compositeis produced by this process.

Process for producing metallic-nanoparticle inorganic composite and metallic-nanoparticle inorganic composite

A cathode includes a diffusion layer, and a porous catalyst layer provided on the diffusion layer. The porous catalyst layer has a thickness not greater than 60 &#x3bc;m, a porosity of 30 to 70% and a pore diameter distribution including a peak in a range of 20 to 200 nm of a pore diameter. A volume of pores having a diameter of 20 to 200 nm is not less than 50% of a pore volume of the porous catalyst layer. The porous catalyst layer contains a supported catalyst comprising 10 to 30% by weight of a fibrous supported catalyst and 70 to 90% by weight of a granular supported catalyst. The fibrous supported catalyst includes a carbon nanofiber having a herringbone structure or a platelet structure. The granular supported catalyst includes a carbon black having 200 to 600 mL/100 g of a dibutyl phthalate (DBP) absorption value.

Liquid fuel cell, membrane electrode assembly and cathode

It is made possible to provide an optical waveguide system that has a coupling mechanism capable of selecting a wavelength and has the highest possible conversion efficiency, and that is capable of providing directivity in the light propagation direction. An optical waveguide system includes: a three-dimensional photonic crystalline structure including crystal pillars and having a hollow structure inside thereof; an optical waveguide in which a plurality of metal nanoparticles are dispersed in a dielectric material, the optical waveguide having an end portion inserted between the crystal pillars of the three-dimensional photonic crystalline structure, and containing semiconductor quantum dots that are located adjacent to the metal nanoparticles and emit near-field light when receiving excitation light, the metal nanoparticles exciting surface plasmon when receiving the near-field light; and an excitation light source that emits the excitation light for exciting the semiconductor quantum dots.

Optical waveguide system

A near-field interaction control element includes a near-field optical waveguide containing particles formed of a metal, a metal anion or a metal cation with a diameter of 0.5 nm or more and 3 nm or less and a dielectric constant of &#x2212;2.5 or more and &#x2212;1.5 or less, an electron injector/discharger injecting or discharging an electron into or from the particles contained in the near-field optical waveguide to vary a dielectric constant of the near-field optical waveguide, a near-field light introducing part introducing near-field light into the near-field optical waveguide, and a near-field light emitting part emitting the near-field light having guided through the near-field optical waveguide.

Near-field interaction control element

An optical waveguide includes a propagating light waveguide, a coupler including a photonic crystal, and a surface plasmon waveguide, the propagating light waveguide, the coupler, and the surface plasmon waveguide being disposed in one plane along a waveguiding direction.

Optical waveguide

The present invention is to provide a metal oxide sintered structure having a homogeneous catalyst supporting ability, and a production method therefor. Hardly reducing oxide powders and reducing oxide powders are mixed, and then kneaded with a binder. By extrusion molding, a structure comprising channels (fluid communicating holes) is formed. Then, after heating reaction and solid solution, it is reduced under an atmosphere containing a hydrogen. Thereby, a metal oxide sintered structure having the fluid communicating holes, with the metal particles precipitated on the surface is produced. The structure is suitable for use as a catalyst for a fuel cell, or the like.

Metal oxide sintered structure and production method therefor

The brazing filler of the present invention is excellent in wetting properties towards the open end of a ceramic cylinder and a metal sealing cap can be sealed well on the open end. The present brazing filler comprises Ag, Cu and active metal, in which the Cu-active metal compound is contained in an amount of not more than 40% by volume.

Growing community of inventors

Yokohama, Japan

Miho Maruyama