Hitachi Maxell, Limited

Hitachi, Ltd.

Hitachi Maxell Energy, Ltd.

Hiroshi Kashino

Shoji Saibara

Ryo Nagai

Toshihiro Nakai

Yasuo Arishima

Shinsuke Shibata

Gun Seki

Takeshi Miki

Norihisa Yoshimoto

Kohei Ugawa

Shingo Nakamura

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

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

An air-hydrogen battery with high energy density and satisfactory cycle characteristics is provided. The air-hydrogen battery includes: a positive electrode made of an air electrode; a negative electrode provided with a hydrogen-absorbing alloy; and a cation-exchange film or an anion-exchange film formed as an electrolyte between the positive electrode and the negative electrode, wherein a periphery of the hydrogen-absorbing alloy of the negative electrode is covered with an anion-exchange resin, whereby the contact area between the anion-exchange resin that functions as an electrolyte and the hydrogen-absorbing alloy is increased, and the utilization factor and resistance to corrosion of the hydrogen-absorbing alloy are enhanced.

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Takatsuki, Japan

Hiroshi Kashino