Nec Corporation

Nippon Electric Co., Ltd.

Other

Nec Toshiba Space Systems, Ltd.

Fuchita Nanotechnology Ltd.

Yoshimi Kubo

Takashi Manako

Tsutomu Yoshitake

Yuichi Shimakawa

Hidekazu Kimura

Hitoshi Igarashi

Hiroshi Kajitani

Hideto Imai

Shin Nakamura

Tetsuo Suzuki

Sadanori Kuroshima

Shigeaki Shimizu

Eiji Akiyama

Yoshinori Watanabe

Sumio Iijima

Yasuyuki Nakamura

Yasutaka Kono

Masako Yudasaka

Tetsuo Tsuchiya

Toshiya Kumagai

Takeshi Azami

Susumu Mizuta

Takeshi Obata

Satoshi Nagao

Daisuke Kasuya

Ryota Yuge

Toru Mori

Akira Okamoto

Suguru Watanabe

Yoshio Arai

Mayumi Kosaka

Eiji Fuchita

Takashi Kizaki

Satoshi Tomoeda

Ichiro Mase

An apparatus for manufacturing carbon nanohorns includes a production chamber configured to irradiate a solid carbon material with a laser beam to produce a product containing carbon nanohorns; and a separation mechanism configured to separate the product produced in the production chamber into a lightweight component and a heavyweight component. The heavyweight component includes carbon nanohorn aggregate with high purity, and high-purity carbon nanotubes can be obtained by collecting the heavyweight component.

Apparatus and method for manufacturing carbon nanohorns

An adhesive layeris disposed between a carbon particleand a catalyst substanceof a catalyst-supporting particle for a fuel cell containing the carbon particleand the catalyst substance. Thereby, the catalyst-supporting particle for fuel cell can be obtained in which a contact resistance between the catalyst substance and the carbon particle supporting the same is lower, and the aggregation of the catalyst substance is suppressed. A catalyst electrode for a fuel cell and the fuel cell using the above particle have a higher output power and an excellent durability.

Catalyst-supporting particle, composite electrolyte, catalyst electrode for fuel cell, and fuel cell using the same, and methods for fabricating these

A fuel cell is provided which can supply the stable power and has higher reliability and a longer period of life without the influence of the circumstances and the operation conditions. An absorbent disposed near an oxidant electrode of a fuel cell including a fuel electrode and the oxidant electrode approaches to the vicinity of or is in contact with the oxidant electrode surface or departs from the oxidant electrode. Thereby, the absorbent removes moisture on the oxidant electrode so that the fuel cell which can supply the stable power with the higher reliability and the longer period of life can be provided.

Fuel cell and method of operating same

In an Mn-containing perovskite oxide which is a conventional phase-change substance (AB)MnO, when the mixing amount x is increased, the transition temperature (Tc) is shifted to higher temperature side, but the slope of a change in the emittance become gentle and &#x394;&#x3b5; (&#x3b5; at higher temperature&#x2212;&#x3b5; at lower temperature) also become small. In the present invention, the compositional formula of the phase-change substance is the Mn-containing perovskite oxide represented by (AB)MnOwith 0&#x3c;y in which the Mn ratio is changed from stoichiometric composition, thereby shifting the transition temperature (Tc) to a higher temperature with the emittance characteristic thereof comparable to that of the phase-change substance having the composition which is not changed from stoichiometric composition.

Phase-change substance, thermal control device and methods of use thereof

An adhesion layer containing a second solid polymer electrolyte is disposed between a solid polymer electrolyte membrane and a fuel electrode and/or an oxidant electrode containing a first solid polymer electrolyte and a catalyst substance. The solid polymer electrolyte membrane and the adhesion layer are made of the same solid polymer electrolyte. In this manner, the adhesion at the interface between the electrode surface and the solid polymer electrolyte membrane is enhanced to implement the elevation of the cell characteristics and the elevation of the reliability of the cell.

Fuel cell, fuel cell electrode and method for fabricating the same

The operability of a fuel cell which uses a fuel cartridge housing a liquid fuel is improved. A fuel cartridgehouses a liquid fuel. The fuel cartridgeincludes a gas-liquid separation filmwhich divides a fuel housing sectioninto a liquid housing chamberand a gas housing chamber. A fuel gas, which is the vaporized liquid fuel, is housed in the gas housing chamber. A gas exhaust pipeis connected to the gas housing chamber, and the fuel gas housed in the gas housing chamberis discharged to outside the fuel cartridgevia a gas discharge port

Fuel cartridge, fuel cell and portable electrical appliance including fuel cell

A fuel cell () which has an electrode-electrolyte joined article () composed of a fuel electrode (), an oxidizing agent electrode () and, sandwiched thereby, a solid polymer electrolyte (), characterized in that a separation film () comprising a material exhibiting an oxygen/nitrogen separation factor of more than 1 is provided on the surface of an oxidizing agent electrode side current collector () constituting the oxidizing agent electrode (). The fuel cell is a liquid fuel supply type of fuel cell which has a simple structure and also is capable of supplying satisfactory oxygen to an oxidizing agent electrode.

Liquid fuel supply type fuel cell

A fuel cartridge in a fuel cell is constructed so as to be removably mounted to a fuel cell body. The fuel cartridge is constructed so that a high-concentration fuel tank and a mixing tank are detachably connected at a fitting section. A low-concentration fuel, a recovered fuel recovered from a fuel container, and a high-concentration fuel in the high-concentration fuel tank are mixed in the mixing tank to be a fuel at a predetermined concentration of fuel component, and then the fuel is supplied to the fuel container.

Fuel cartridge for fuel cell and fuel cell with the fuel cartridge

A fuel cell () is mounted with a fuel cartridge () in a detachable manner. The fuel cartridge () is provided with a connecting part () and the fuel cell () is provided with a fitting part () into which the connecting part () is fitted. The fuel cell () identifies the fitted fuel cartridge ().

Fuel cell, fuel cartridge and fuel cell system

A fuel cell has a fuel electrode and an oxidizing agent electrode, a fuel supply path that supplies a liquid fuel to the fuel electrode, an oxidizing agent supply path that supplies an oxidizing agent to the oxidizing agent electrode, and an opening/closing member that, by changing its shape, opens and closes the oxidizing agent supply path. The change in the shape of the opening/closing member regulates the opening and closing of the oxidizing agent supply path.

Fuel cell

A plume () is generated by irradiating a side face of a graphite rod () with a laser beam () to vaporize carbon. The vaporized carbon is introduced to a carbon nanohorn recovery chamber () through a recovery pipe (), and the vaporized carbon is recovered as a carbon nanohorn assembly (). A cooling tank () including liquid nitrogen () is arranged in the recovery pipe (). While the cooling tank () controls the plume () at a low temperature, the cooling tank () cools the carbon vapor when the carbon vapor passes through the recovery pipe (). The cooled carbon vapor is recovered as the carbon nanohorn assembly () which is controlled in the desired shape and dimensions.

Carbon nanohorn producing device and carbon nanohorn producing method

An electrode sheet () is put in one side of a solid electrolyte membrane () at its cut portion. A base member () for an oxidant electrode side current collector electrode sheet () is placed at a location facing a base member () for the electrode sheet () formed on one face of the solid electrolyte membrane (). In addition, the base member () for a fuel electrode side current collector electrode sheet () is placed at a location facing the base member () formed on the other face of the electrolyte film ().

Fuel cell and method for manufacturing the same

A heat controller for an object, having a composite material formed of a base material radiating a large amount of heat at a high-temperature phase and a phase-change substance having insulation properties at a high-temperature phase, having metallic properties at a low-temperature phase, radiating a small amount of heat at a low-temperature phase, and having a high reflectivity in the thermal infrared region at a low-temperature phase.

Heat control method and heat controller

A plurality of fuel electrodes are disposed on one surface of a solid polyelectrolyte membrane, while a plurality of oxidizer electrodes are disposed on the other surface of the same to create a plurality of unit cells which share the solid polyelectrolyte membrane. These unit cells are electrically connected through connection electrode extending through the solid polyelectrolyte membrane. A groove is formed in a region of the solid polyelectrolyte membrane between adjacent unit cells. This groove limits the migration of hydrogen ions to adjacent unit cells to prevent a reduction in voltage. The resulting solid polymer fuel cell, which is in a simple structure and reduced in size, can provide high power.

Compounds are expressed by general formula of A BC where 0&lE;x&lE;2 and 0&lE;y<1, and have CdI2 analogous layer structures; A-site is occupied by at least one element selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Ir, Pt, Au, Sc, rare earth elements containing Y, B, Al, Ga, In, Tl, Sn, Pb and Bi; B-site is occupied by at least one element selected from the group consisting of Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W, Ir, and Sn; C-site is occupied by at least one element selected from the group consisting of S, Se and Te; the compounds exhibit large figure of merit so as to be preferable for thermoelectric generator/refrigerator.

Growing community of inventors

Tokyo, Japan

Yoshimi Kubo