Hitachi Maxell, Limited

Hitachi, Ltd.

Hitachi Maxell Energy, Ltd.

Shoji Saibara

Shigeo Aoyama

Toshio Oshima

Yukinori Yamada

Takanori Kamoto

Tomio Nabeshima

Kazushi Miyata

Hiroshi Kashino

Yuichi Sakurai

Toshihiro Nakai

Takeshi Miki

Kenji Kohno

Hiroyuki Mitsuhashi

Masayuki Yamada

Ryo Nagai

Hideaki Katayama

Toshihiro Abe

Makito Yokoe

Norihisa Yoshimoto

Kouji Takazawa

Kohei Ugawa

Tomohiro Harada

Yasuo Arishima

Shinsuke Shibata

Gun Seki

Tetsuya Taki

Keigo Aoi

Masahiko Okada

Shingo Nakamura

Miwa Miyamoto

Eri Yokoyama

Toshihiro Koyama

Sachie Kawadu

In a membrane electrode assembly of the present invention, at least one of a catalyst layer of an oxygen electrode and a catalyst layer of a fuel electrode includes a supported catalyst supporting a metal catalyst containing a platinum group element, a proton conductive polymer electrolyte, and at least one selected from (a) a complex-forming agent having a ligand that forms coordinate bonds with ions of the platinum group element and forms a complex, the ligand containing oxygen as a coordinating atom, (b) a complex of the platinum group element, a ligand of the complex containing oxygen as a coordinating atom, and (c) carbon that has a BET specific surface area of 100 m/g or greater, satisfies at least one of (i) an R value of Raman spectrum of 0.5 or less and (ii) a lattice spacing dbetween (002) planes of 0.35 nm or less, and does not support the metal catalyst. With the use of the membrane electrode assembly of the present invention, it is possible to provide a polymer electrolyte fuel cell that has high durability and a long service life.

Membrane electrode assembly and polymer electrolyte fuel cell

A hydrogen producing apparatus according to the present invention includes a hydrogen-generating-material containing vesselfor containing a hydrogen generating material, a water containing vesselfor containing water, a water supply portion for supplying water from the water containing vesselto the hydrogen-generating-material containing vessel, a hydrogen outflow portion for leading out hydrogen from the hydrogen-generating-material containing vessel, a gas-liquid separating partfor separating water from a mixture of hydrogen and water discharged from the hydrogen-generating-material containing vessel, and a water collecting portion for collecting water separated by the gas-liquid separating partinto the water containing vessel

Hydrogen producing apparatus and fuel cell system using the same

A liquid fuel cell comprising a plurality of unit fuel cells each having a positive electrode () for reducing oxygen, a negative electrode () for oxidizing liquid fuel, and an electrolyte layer () interposed between the positive electrode () and the negative electrode (), and a section () for storing liquid fuel (), wherein power can be generated stably while reducing the size by arranging the plurality of unit fuel cells on the substantially same plane. Each electrolyte layer of the unit fuel cell preferably constitutes a continuous integrated electrolyte layer.

Liquid fuel cell with a planer electrolyte layer

A hydrogen generating material reacts with water to produce hydrogen and includes at least one metal material selected from the group consisting of aluminum, magnesium, and their alloys. The metal material includes particles with a particle size of 60 &#x3bc;m or less in a proportion of 80 wt % or more. The hydrogen generating material can produce hydrogen easily and efficiently at low temperatures. A hydrogen generator can be made portable by using the hydrogen generating material. Moreover, the use of the hydrogen generating material as a hydrogen fuel source can reduce the size of a fuel cell and improve the electrical efficiency.

Hydrogen generating material, hydrogen generator and fuel cell

A hydrogen generating material of the present invention includes at least one metal material selected from aluminum and aluminum alloy. The metal material has a surface film that includes a metal phase containing aluminum in the metallic state and an inactive phase containing an oxide or hydroxide of aluminum. A method for producing the hydrogen generating material of the present invention includes pulverizing aluminum or aluminum alloy in a liquid containing water and an organic solvent. A method for producing hydrogen of the present invention includes producing hydrogen by a reaction between the hydrogen generating material of the present invention and water.

Hydrogen generating material and method for producing the same, and method for producing hydrogen

An ion-conductive electrolyte which comprises a compound having in the molecule a structure represented by the following chemical formula and an electrolyte salt; and a cell employing the ion-conductive electrolyte. The ion-conductive electrolyte has a low vapor pressure, has a high ion conductivity even at room temperature, and has a high lithium ion transport number. With this ion-conductive electrolyte, a highly safe cell having excellent discharge characteristics can be provided.

Ion-conductive electrolyte and cell employing the same

An exemplary information processing apparatus of the present invention includes: a body portion having a control device; and a display portion having a display panel connected to the body portion via a hinge so as to be swingably opened or closed. A power generation portion of a fuel cell, having positive electrodes, negative electrodes, and electrolyte layers placed between the positive electrodes and the negative electrodes is provided in a housing of the display portion. The positive electrodes of the power generation portion are disposed on a back side or a display panel side of the display portion. Air holes for supplying air to the positive electrodes are provided on at least one selected from a back side of the housing and a display panel side of the housing. A fuel cartridge for supplying liquid fuel to the power generation portion is incorporated in the body portion. Thus, the information processing apparatus can be decreased in thickness and miniaturized.

Information processing apparatus

A material capable of occluding/discharging a lithium ion or a lithium-ion-conducting material is made to adhere to a surface of a particle of a lithium transition metal composite nitride having a particle diameter of 0.01 to 30 &#x3bc;m by a vapor phase method represented by a thin-film forming method selected from chemical vapor deposition, vapor deposition, ion plating and sputtering, thereby providing a composite electrode material with improved stability in the air as an electrode material capable of constituting an electrochemical element having a large capacity and improved cycle characteristics.

Composite electrode material and method for producing the same, and electrochemical element using the same

An inked ribbon containing a tape-like carrier deposited with a fluorescent composition that contains a fluorescent substance containing at least one of Nd and Yb as an optical active element and, other than this optical active element, at least one oxide of one of Mo and W and an alkaline earth metal, which fluorescent substance is dispersed and retained in an organic binder, wherein the organic binder is a mixture of wax and resin, and wherein the fluorescent substance has an average particle size of not more than 1 micron.

Fluorescent substance, fluorescent composition, fluorescent mark carrier and optical reader therefor

Neodymium, ytterbium and/or erbium containing organic fluorescent compositions

Fluorescent ink compositions

Particulate fluorescent substance

Method of reusing a coated substrate having a surface coating fixed to the substrate from which deposits are readily removed

The present invention relates to a pigmented ink, in particular, an ink suitable for an ink-jet printing method comprising jet of ink droplets from a print head. More particularly, it relates to a pigmented ink excellent in the dispersibility and dispersion stability of pigment particles, storage stability, etc. There is provided a pigmented ink which comprises (1) an organic pigment having a surface made hydrophobic by adsorption thereon or binding thereto of an organic substance, (2) an amphiphilic compound composed of a poly(ethylene oxide) as a hydrophilic portion and an alkyl group and/or an aromatic group as a hydrophobic portion, and (3) water, and is excellent in the dispersion stability of pigment particles and storage stability by virtue of the above composition.

Pigmented ink and process for production thereof

Growing community of inventors

Toride, Japan

Shoji Saibara