Toyota Jidosha Kabushiki Kaisha

Hitachi Zosen Corporation

The University of Tokyo

Tsuchiya Co., Ltd.

Kabushiki Kaisha Toyota Jidoshokki

Tokyo Institute of Technology

Hokkaido University

Hiroshima University

Ihara Chemical Industry Co., Ltd.

Nagoya Institute of Technology

Nippon Kodoshi Corporation

Hitachi Maxell Energy, Ltd.

Haruyuki Nakanishi

Hidekazu Arikawa

Shigeaki Murata

Shinichi Matsumoto

Masahiro Imanishi

Yoshihisa Tamura

Norihiko Nakamura

Chikashi Inazumi

Susumu Hikazudani

Yusuke Kuzushima

Hidehito Kubo

Keiji Toh

Hiroaki Hayashi

Akiko Kumano

Sadao Araki

Haruo Sawa

Shohei Matsumoto

Hirofumi Fujiwara

Masahito Hoshino

Kiyomi Kozuka

Kazuya Uchisasai

Mikio Kishimoto

Kyoichi Tange

Jun Kubota

Kazunari Domen

Koji Wada

Masahiro Yuki

Hirokazu Ishimaru

Tatsuya Takeguchi

Yuichiro Hama

Yukihisa Katayama

Takuma Mori

Yuki Sairyo

Yuko Sawaki

Takayuki Ichikawa

Tsutomu Minegishi

Yoshitsugu Kojima

Tomokazu Iyoda

Hironobu Kumagai

Koshi Sekizawa

Tatsuya Fujii

Hideki Masuda

Hiroki Takahashi

Yoshiaki Nishibayashi

Tomoya Yamashita

Yukimitsu Suzuki

Hiroki Miyaoka

Masafumi Kobayashi

Saburo Hosokawa

Momoyo Sawai

Kenji Yoshikawa

Sadayuki Asaoka

Naoto Yoda

Keiichi Nakata

Chika Miwada

Ayaka Nakamura

Provided is a negative electrode active material for a battery, the negative electrode active material comprising an iron compound, the iron compound containing a salt of a polyoxygen anion with iron, wherein the polyoxygen anion has a first atom and an oxygen atom, the first atom is at least one type of atom selected from atoms belonging to Group 4, Group 5, Group 6, Group 13, and Group 14 in the periodic table of elements, and a molar ratio of the oxygen atom to the first atom in the polyoxygen anion is more than 1.

Negative electrode active material and battery

A film that contains NiOH as a main component.

Film, film forming method, and surface-coated material

A hydride secondary battery includes: a pressure vessel; a positive electrode disposed in the pressure vessel; a negative electrode disposed in the pressure vessel; and hydrogen gas with which the pressure vessel is filled. The negative electrode contains a hydrogen-absorbing alloy. In a pressure-composition-temperature diagram, a desorption curve at 25&#xb0; C. of the hydrogen-absorbing alloy has a plateau pressure of 0.15 MPa or more and 10 MPa or less. The hydrogen gas has a pressure equal to or higher than the plateau pressure at 25&#xb0; C. of the hydrogen-absorbing alloy.

High pressure type hydride secondary battery

The present invention is to provide a redox type fuel cell that is able to quickly regenerate a mediator. The present invention is such a redox type fuel cell that a mediator is circulated in a cathode electrode, wherein a regenerator for oxidizing the mediator includes: a first chamber configured to store a mediator-containing solution; a second chamber configured to store an oxygen reduction reaction medium solution; a power source; a first electrode disposed in the first chamber and connected to a positive electrode of the power source: a second electrode disposed in the second chamber and connected to a negative electrode of the power source; an ion exchange path configured to connect the first chamber and the second chamber; and a gas supplier configured to supply an oxygen-containing gas into the second chamber.

Redox type fuel cell

Provided are a photocatalyst having higher activity for hydrogen production through water splitting and a photoelectrode comprising the photocatalyst. The photocatalyst for water splitting of the present invention comprises a Ga selenide, an Ag&#x2014;Ga selenide, or both thereof.

Photocatalyst for water splitting comprising gallium selenide and photoelectrode for water splitting comprising the same

The present invention is to provide a hydrogen oxidation catalyst that does not contain platinum. Disclosed is a hydrogen oxidation catalyst that is a dinuclear transition metal complex having a chemical structure represented by the following general formula (1) or (2): wherein, in the general formulae (1) and (2), Mand Mare each independently Fe or Ru; Arand Arare each independently a cyclopentadienyl group or a pentamethylcyclopentadienyl group; Arand Arare each independently a divalent aromatic hydrocarbon group having 6 to 12 carbon atoms; and Aris a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms, and in the general formula (2), Rand Rare each independently a hydrogen atom or a monovalent aliphatic hydrocarbon group having 1 to 3 carbon atoms.

Hydrogen oxidation catalyst

A hydrogen generator that can be operated in a broad temperature range is disclosed, which comprises a first ammonia conversion part having a hydrogen-generating material which reacts with ammonia in a first temperature range so as to generate hydrogen; a second ammonia conversion part having an ammonia-decomposing catalyst which decomposes ammonia into hydrogen and nitrogen in a second temperature range; an ammonia supply part which supplies ammonia; and an ammonia supply passage which supplies ammonia from said ammonia supply part to the first and second ammonia conversion parts. The first temperature range includes temperatures lower than the second temperature range, and hydrogen is generated from ammonia by selectively using the first and second ammonia conversion parts. An ammonia-burning internal combustion engine and a fuel cell having the hydrogen generator are also disclosed.

Hydrogen generator, ammonia-burning internal combustion engine, and fuel cell

An ammonia-engine system is capable of supplying an ammonia cracking catalyst with a temperature necessary to promote a reaction even during low load operation in which a temperature of an exhaust gas from an ammonia engine is lower than an operating temperature of the ammonia cracking catalyst. In an ammonia-engine system provided with an ammonia engine () using ammonia as fuel and an ammonia cracking device () including an ammonia cracking catalyst that cracks ammonia and cracking ammonia to produce hydrogen, an ammonia oxidizing device () is provided between the ammonia engine () and the ammonia cracking device ().

Ammonia-engine system

A solid electrolyte including a layered metal oxide represented by the formula (1),(LaA)(SrB)(CoC)O&#x2003;&#x2003;(1)[wherein A represents a rare earth element other than La; B represents Mg, Ca, or Ba; C represents Ti, V, Cr, or Mn; 0&#x2266;x&#x3c;1, 0&#x2266;y&#x3c;1, 0&#x2266;z&#x3c;1; and &#x3b4; represents an oxygen deficiency amount].

Solid electrolyte including layered metal oxide, fuel cell including thereof, production method for solid electrolyte, and production method for electrode catalyst

A fuel cell system whose fuel loss caused by the crossover of the fuel is small and which can be operated economically. The fuel cell system includes a fuel cell, a primary feeding systemfor feeding a primary fuel which is a liquid fuel to the fuel cell, a secondary feeding systemfor feeding a secondary fuel which is a liquid fuel whose saturation vapor pressure is lower than that of the primary fuel to the fuel cell, a ECUfor controlling each part so that the primary fuel in the fuel cell is replaced with the secondary fuel when terminating the operation of the fuel cell

Fuel cell system

An alkaline fuel cell electrode catalyst includes a first catalyst particle that contains at least one of iron (Fe), cobalt (Co) and nickel (Ni), a second catalyst particle that contains at least one of platinum (Pt) and ruthenium (Ru), and a carrier for supporting the first catalyst particle and the second catalyst particle.

Alkaline fuel cell electrode catalyst, alkaline fuel cell, manufacture method for alkaline fuel cell electrode catalyst, and manufacture method for alkaline fuel cell

A hydrogen generating apparatus for effectively generating hydrogen from ammonia and relates to the hydrogen generating apparatus for generating hydrogen from ammonia. The apparatus comprises an ammonia oxidation part having ammonia oxidation catalysts which oxidizes ammonia, and an ammonia decomposition part having an ammonia decomposition catalyst which decomposes ammonia to generate nitrogen and hydrogen. The decomposition part is located downstream of the oxidation part in a direction of feed gas flow. The oxidation catalyst contains both a noble metal catalyst and a base metal catalyst, and a loading concentration of the noble metal catalyst in an upstream portion of the oxidation part is higher than a loading concentration of the noble metal catalyst in a downstream portion of the oxidation part, and/or the decomposition catalyst contains both a noble metal catalyst and a base metal catalyst, and a loading concentration of the noble metal catalyst in a downstream portion of the decomposition part is higher than a loading concentration of the noble metal catalyst in an upstream portion of the decomposition part.

Hydrogen generating apparatus and hydrogen generating method

It is a main object of the present invention to provide a fuel cell catalyst in which a support for supporting a metal catalyst has electrical conductivity in itself and which can prevent agglomeration of the metal catalyst during long term use of the fuel cell. In the present invention, the object is achieved by providing a fuel cell catalyst for use in a cathode-side catalyst electrode layer of a solid polymer electrolyte fuel cell, comprising a metal catalyst and a perovskite-type complex oxide (ABO3).

Fuel cell catalyst, membrane electrode assembly and solid polymer electrolyte fuel cell

A fuel cell assembly that includes at least one cell cartridge with two or more cell modules, a pair of electrodes and current collectors, each cell cartridge further having a fixing portion and module connecting portions; and an outer case for storing one or more cell cartridges, the outer case having a plurality of planar cartridge connecting portions.

Fuel cell

An alkaline fuel cell having an electrolyte, and anode and cathode electrodes disposed on two sides of the electrolyte is provided. A fuel cell system has this fuel cell, a discharge passageway that is connected to a discharge opening of the fuel cell and that discharges from the fuel cell an exhaust fuel containing unreacted fuel, and a circulation passageway that is connected to an introduction opening for introducing the fuel into the fuel cell and that circulates and supplies the exhaust fuel to the fuel cell. The fuel cell system further includes fuel/water separation means linked to the discharge passageway and the circulation passageway and disposed between the discharge and circulation passageways. The means separates and removes water from the exhaust fuel flowing in from the discharge passageway, and then causes a concentrated fuel from which water has been separated and removed to flow into the circulation passageway.

Fuel cell system and operation method therefor

Growing community of inventors

Susono, Japan

Haruyuki Nakanishi