Nippon Steel & Sumikin Chemical Co., Ltd.

Nippon Steel Chemical & Material Co., Ltd.

Nippon Steel Sumitomo Metal Corporation

Nippon Steel Corporation

Hiroyuki Hayashida

Takashi Iijima

Kazuaki Yoshimura

Masataka Hiyoshi

Kazuto Shiraishi

Tohru Asari

Shinya Furukawa

Hiroshige Tanaka

Kenichiro Tadokoro

Katsumasa Matsumoto

Masashi Niina

Kazuyoshi Masaki

Kazuhiko Mizuuchi

Takaya Ishiyama

Tomoko Komura

Takumi Kouno

Wakana Tada

Noriyuki Negi

Atsushi Kawada

Masakazu Katayama

Masakazu Higuchi

Takuo Nagahama

Kouta Masutani

Yasushi Koishikawa

Takumi Nishimoto

Mitsuru Sakai

Takayuki Shimizu

A carbon material for use as a catalyst carrier for a polymer electrolyte fuel cell which is a porous carbon material and satisfies at the same time (1) the content of a crystallized material is 1.6 or less, (2) the BET specific surface area obtained by a BET analysis of a nitrogen gas adsorption isotherm is from 400 to 1500 m/g, (3) the cumulative pore volume Vwith respect to a pore diameter of from 2 to 10 nm obtained by an analysis of a nitrogen gas adsorption isotherm using the Dollimore-Heal method is from 0.4 to 1.5 mL/g, and (4) the nitrogen gas adsorption amount Vbetween a relative pressure of 0.95 and 0.99 in a nitrogen gas adsorption isotherm is from 300 to 1200 cc (STP)/g, and the method of producing the same.

Carbon material for use as catalyst carrier of polymer electrolyte fuel cell and method of producing the same

Provided are a carbon material for a catalyst carrier of a polymer electrolyte fuel cell, the carbon material being a porous carbon material and simultaneously satisfying (1) an intensity ratio (I/I) of an intensity at 750° C. (I) and a peak intensity in a vicinity of 690° C. (I) is 0.10 or less; (2) a BET specific surface area is from 400 to 1,500 m/g; (3) an integrated pore volume Vof a pore diameter of from 2 to 10 nm is from 0.4 to 1.5 mL/g; and (4) a nitrogen gas adsorption amount Vat a relative pressure of from 0.95 to 0.99 in the nitrogen gas adsorption isotherm is from 300 to 1,200 cc(STP)/g, as well as a method of producing the same.

Carbon material for catalyst carrier of polymer electrolyte fuel cell and method of producing the same

The present invention is a carbon material for a catalyst carrier of a polymer electrolyte fuel cell, which has a three-dimensional dendritic structure, and simultaneously satisfies the following (A), (B), and (C). (A) By a laser Raman spectroscopic analysis with a wavelength of 532 nm, a standard deviation &#x3b4;(R) of an intensity ratio (R value) of an intensity of a D-band (near 1360 cm) to an intensity of a G-band (near 1580 cm) measured with a beam diameter of 1 &#x3bc;m at 50 measurement points is from 0.01 to 0.07. (B) A BET specific surface area Sis from 400 to 1520 m/g. (C) A nitrogen gas adsorption amount Vduring a relative pressure (p/p) from 0.4 to 0.8 is from 100 to 300 cc(STP)/g. A method of producing such a carbon material for a catalyst carrier is also included.

Carbon material for catalyst carrier of polymer electrolyte fuel cell, and method of producing the same

A carbon material for catalyst carrier use excellent in both durability and power generation performance under operating conditions at the time of low humidity, in particular both durability of a carbon material for catalyst carrier use with respect to repeated load fluctuations due to startup and shutdown and power generation performance under operating conditions at the time of low humidity, and a catalyst for solid-polymer fuel cell use prepared using the same etc. are provided. To solve this technical problem, according to one aspect of the present invention, there is provided a carbon material for catalyst carrier use satisfying the following (A) to (D):

Catalyst-carrier carbon material, solid-polymer fuel cell catalyst, solid-polymer fuel cell, and method for manufacturing catalyst-carrier carbon material

A support carbon material able to support a catalyst metal in a highly dispersed state and resistant to the flooding phenomenon and with little voltage drop even at the time of large current power generation under high humidity conditions and a catalyst using the same, specifically, a support carbon material for solid polymer type fuel cell use comprised of a porous carbon material which has a pore volume and a pore area found by the BJH analysis method from a nitrogen adsorption isotherm in an adsorption process of a radius 2 nm to 50 nm pore volume Vof 1 ml/g to 5 ml/g and a radius 2 nm to 50 nm pore area Sof 300 m/g to 1500 m/g and a ratio (V/V) of radius 5 nm to 25 nm pore volume V(ml/g) to said pore volume V(ml/g) of 0.4 to 0.7 and a ratio (V/V) of radius 2 nm to 5 nm pore volume V(ml/g) to the same of 0.2 to 0.5 and a catalyst using the same.

Support carbon material and catalyst for solid polymer type fuel cell use

Provided are: a supporting carbon material for a solid polymer fuel cell, said supporting carbon material making it possible to produce a high-performance solid polymer fuel cell in which there is little decrease in power generation performance as a result of repeated battery load fluctuation that inevitably occurs during operation of the solid polymer fuel cell; and a catalyst metal particle-supporting carbon material. The present invention relates to: a supporting carbon material for a solid polymer fuel cell, said supporting carbon material being a porous carbon material in which the specific surface area of mesopores having a pore diameter of 2-50 nm according to nitrogen adsorption measurement is 600-1,600 m/g, the relative intensity ratio (IG'/IG) of the peak intensity (IG&#x2032;) of the G-band 2,650-2,700 cmrange to the peak intensity (IG) of the G-band 1,550-1,650 cmrange in the Raman spectrum is 0.8-2.2, and the peak position of the G&#x2032;-band is 2,660-2,670 cm; and a catalyst metal particle-supporting carbon material.

Supporting carbon material for solid polymer fuel cell and catalyst metal particle-supporting carbon material

Provided are an organic semiconductor material having a high charge mobility, oxidation stability, and solvent solubility, an organic semiconductor device using the same, and a novel aromatic heterocyclic compound to be used for the same and a production method therefor. The aromatic heterocyclic compound is represented by the following general formula (1), has two heteroatoms, and has a structure in which six rings are fused. In the formula, X represents an oxygen atom or N&#x2014;R, and R represents hydrogen or a monovalent substituent. The organic semiconductor material contains the aromatic heterocyclic compound, and is used for an organic semiconductor film or an organic device, such as an organic thin-film transistor or an organic photovoltaic device.

Aromatic heterocyclic compound, manufacturing method thereof, organic semiconductor material, and organic semiconductor device

Provided are a supporting carbon material for a solid polymer fuel cell and a metal-catalyst-particle-supporting carbon material that, when used as a carrier for a solid polymer fuel cell catalyst, have excellent power generation performance in high-humidity conditions, which are conditions in which solid polymer fuel cells are operated. A supporting carbon material for a solid polymer fuel cell and a metal-catalyst-particle-supporting carbon material characterized in being a porous carbon material, the hydrogen content being 0.004-0.010% by mass, the nitrogen adsorption BET specific surface area being 600 m/g-1500 m/g, and the relative intensity ratio (I/I) between the peak intensity (I) in the range of 1200-1400 cmknown as the D-band and the peak intensity (I) in the range of 1500-1700 cmknown as the G-band, obtained from the Raman spectrum, being 1.0-2.0.

Carbon support material for solid polymer type fuel cell use and metal catalyst particle- supporting carbon material and methods of production of same

Provided are: a curable composition containing a compound having a polymerizable group, which allows the production of an organic electroluminescent element in which a plurality of organic layers are formed between both electrodes to be performed through a wet process; and an organic electroluminescent element improved in light emission performance, including a layer containing a cured product of the curable composition. Specifically, provided are: a curable composition containing an indolocarbazole compound having one polymerizable group such as a vinyl group or an epoxy group and having an indolocarbazole skeleton, and a compound having two polymerizable groups; and an organic electroluminescent element including a layer obtained by applying and curing the curable composition as a hole transport layer of the organic electroluminescent element.

Curable composition, cured product, and organic electroluminescence element using same

Provided are a curable composition for an organic electroluminescent element, which has high light emission efficiency and is applicable to a wet process, a cured product thereof, and an organic electroluminescent element containing the cured product in an organic layer. More specifically, provided are a curable composition containing a compound represented by an indolocarbazole skeleton compound, a cured product obtained by curing the curable composition, and an organic electroluminescent element containing the cured product in an organic layer.

Curable composition, cured product, and organic electroluminescent element using same

Provided are a nitrogen-containing aromatic compound useful for an organic electroluminescent device, and an organic electroluminescent device (organic EL device) that improves luminous efficiency of the device and sufficiently ensures driving stability of the device. The nitrogen-containing aromatic heterocyclic compound is represented by the following formula (1). The organic EL device includes an organic layer that contains the nitrogen-containing aromatic heterocyclic compound between an anode and a cathode laminated on a substrate. In the formula (1), a ring A represents an aromatic ring represented by the formula (1a) and fused with two adjacent rings, a ring B represents a heterocycle represented by the formula (1b) and fused with two adjacent rings, Y's each represent C&#x2014;R or N, X's each represent N&#x2014;Z, O, S, or Se, R represents hydrogen, an alkyl group, an aromatic group, or the like, and Z represents an alkyl group, an aromatic group, or the like. 

Nitrogen-containing aromatic compounds and organic electroluminescent device

Provided are a semiconductor material for an organic transistor having a high charge mobility, solvent solubility, oxidation stability, and satisfactory film formability, and an organic thin-film transistor using the semiconductor material. The organic semiconductor material for an organic transistor is a seven-ring-fused heterocyclic compound having benzene rings at both ends, and having, therebetween, rings of a structure in which benzene rings A and pyrrole rings B are fused in the order of A-B-A-B-A. The fused heterocyclic compound may be substituted with an alkyl group, an alkenyl group, an alkynyl group, or an aromatic group. In addition, the organic thin-film transistor includes a semiconductor layer using the compound.

Organic semiconductor material for organic transistor, and organic transistor element

Provided are a polymer for an organic electroluminescent element, which has high light emission efficiency and is applicable to a wet process, a cured product thereof, and an organic electroluminescent element using the cured product. The polymer for an organic electroluminescent element is represented by the following general formula (1) and includes an indolocarbazole skeleton and a polymerizable group as pendants in a repeating unit constituting a main chain, in which the polymer has a weight-average molecular weight of 1,000 to 1,000,000. An organic electroluminescent element that uses the cured product of the polymer for an organic electroluminescent element in an organic layer is also disclosed.  R's each represent a hydrogen atom or a monovalent organic group, Y represents a divalent linking group, Z represents a substituted or unsubstituted indolocarbazolyl group having a bonding hand at an N-position, W represents a polymerizable group, m and n represent abundance molar ratios, and m represents 1 to 95 mol % and n represents 5 to 99 mol %, and 1 represents an average number of repetitions and represents 2 to 10,000.

Polymer for organic electroluminescent elements, and organic electroluminescent element using cured product of same

Disclosed is a polymer light-emitting material for an organic electroluminescent device that displays excellent light-emitting performance and is applicable to a wet process. The polymer light-emitting material for an organic electroluminescent device is obtained by subjecting a thermoplastic resin having an Mw of 2,000-1,000,000 and containing a functional group in a unit constituting the backbone and a metal-containing phosphorescent dopant compound containing a reactive group capable of reacting with the said functional group to a polymer reaction so as to link a phosphorescent dopant moiety derived from the metal-containing phosphorescent dopant compound to the unit constituting the backbone of the thermoplastic resin. The content of the metal derived from the metal containing phosphorescent dopant compound in the said polymer light-emitting material is 0.001-20 wt %.

Polymer light-emitting material, method for producing the same, and organic electroluminescent device

Provided are a polymer for an organic electroluminescent element, which improves light emission efficiency of the element and is applicable to a wet process, and an organic electroluminescent element, which is obtained using the polymer. The polymer for an organic electroluminescent element includes a repeating unit represented by the following general formula (1) in a repeating unit constituting a main chain. Further, the organic electroluminescent element includes organic layers between an anode and a cathode laminated on a substrate, in which at least one of the organic layers includes the polymer for an organic electroluminescent element, including an indolocarbazole skeleton in the repeating unit constituting a main chain. In the general formula (1), Z represents an N-indolocarbazolyl group, W represents a charge transporting group, m and n represent molar ratios, m represents 0 to 95 mol %, and n represents 5 to 100 mol.

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Kitakyushu, Japan

Hiroyuki Hayashida