Abstract: A gas detector comprises a gas detection unit and a filter introducing surrounding atmosphere to the gas detection unit. The filter comprises a gas-permeable organic polymer membrane having an acidic group or a basic group.

Abstract: [Problem to be solved] To provide a traceable vinyl acetate, a polymer containing the vinyl acetate, and a vinyl alcohol polymer which is a saponified product of the polymer. [Solution] Vinyl acetate having a ratio of carbon-14 to total carbon of 1.0×10?4 or more, a vinyl acetate polymer containing the vinyl acetate as a monomer unit and a vinyl alcohol polymer obtained by saponifying the vinyl acetate polymer.

Abstract: The present invention provides a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities, and preferably high charge/discharge efficiency and low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen content obtained by elemental analysis of 3.5 mass % or more, a ratio of nitrogen content and hydrogen content (RN/H) of 6 or more and 100 or less, a ratio of oxygen content and nitrogen content (RO/N) of 0.1 or more and 1.0 or less, and a carbon interplanar spacing (d002) observed by X-ray diffraction measurement of 3.70 ? or more.

Abstract: The present invention provides a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities, and preferably high charge/discharge efficiency and low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen content obtained by elemental analysis of 3.5 mass % or more, a ratio of nitrogen content and hydrogen content (RN/H) of 6 or more and 100 or less, a ratio of oxygen content and nitrogen content (RO/N) of 0.1 or more and 1.0 or less, and a carbon interplanar spacing (d002) observed by X-ray diffraction measurement of 3.70 ? or more.

Abstract: A problem to be solved by the present invention is to provide a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities and preferably high charge/discharge efficiency as well as low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen element content of 1.0 mass % or more and an oxygen content of 1.5 mass % or less obtained by elemental analysis, a ratio of nitrogen element content and hydrogen element content (RN/H) of 6 or more and 100 or less, a ratio of oxygen element content and nitrogen element content (RO/N) of 0.1 or more and 1.

Abstract: A carbonaceous material for a non-aqueous electrolyte secondary battery, having an average interplanar spacing d002 of the (002) plane within a range of 0.36 to 0.42 nm calculated by using the Bragg equation according to a wide-angle X-ray diffraction method, a specific surface area within a range of 8 to 30 m2/g obtained by a nitrogen adsorption BET three-point method, a nitrogen element content of 0.5 mass % or less, an oxygen element content of 0.3 mass % or less, and an average particle diameter of 1 to 2.8 ?m according to a laser scattering method.

Abstract: The present invention relates to a carbonaceous material that is suitable for the negative pole active substance of a nonaqueous electrolyte secondary battery, a negative pole for a nonaqueous electrolyte secondary battery comprising the carbonaceous material, a nonaqueous electrolyte secondary battery having the negative pole, and a method for producing the carbonaceous material. This carbonaceous material is for a negative pole active substance of a nonaqueous electrolyte secondary battery. The carbonaceous material is derived from plants, the half-width of the peak at approximately 1360 cm-1 of the Raman spectrum observed by laser Raman spectroscopy is 190 to 240 cm-1, and the specific surface area as found by multipoint BET analysis of nitrogen adsorption is 10 to 100 m2/g.

Abstract: A problem to be solved by the present invention is to provide a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities and preferably high charge/discharge efficiency as well as low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen element content of 1.0 mass % or more and an oxygen content of 1.5 mass % or less obtained by elemental analysis, a ratio of nitrogen element content and hydrogen element content (RN/H) of 6 or more and 100 or less, a ratio of oxygen element content and nitrogen element content (RO/N) of 0.1 or more and 1.

Abstract: The present invention provides a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities, and preferably high charge/discharge efficiency and low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen content obtained by elemental analysis of 3.5 mass % or more, a ratio of nitrogen content and hydrogen content (RN/H) of 6 or more and 100 or less, a ratio of oxygen content and nitrogen content (RO/N) of 0.1 or more and 1.0 or less, and a carbon interplanar spacing (d002) observed by X-ray diffraction measurement of 3.70 ? or more.

Abstract: Provided is a carbonaceous material used in a negative electrode of a non-aqueous electrolyte secondary battery that shows favorable charge/discharge capacities and low resistance and having favorable resistance to oxidative degradation. The carbonaceous material has an average interplanar spacing d002 of the (002) plane of 0.36 to 0.42 nm calculated by using the Bragg equation according to a wide-angle X-ray diffraction method, a specific surface area of 20 to 65 m2/g obtained by a nitrogen adsorption BET three-point method, a nitrogen element content of 0.3 mass % or less, an oxygen element content of 2.5 mass % or less, and an average particle diameter of 1 to 4 ?m according to a laser scattering method.

Abstract: The present invention relates to a carbonaceous material that is suitable for the negative pole active substance of a nonaqueous electrolyte secondary battery, a negative pole for a nonaqueous electrolyte secondary battery comprising the carbonaceous material, a nonaqueous electrolyte secondary battery having the negative pole, and a method for producing the carbonaceous material. This carbonaceous material is for a negative pole active substance of a nonaqueous electrolyte secondary battery. The carbonaceous material is derived from plants, the half-width of the peak at approximately 1360 cm-1 of the Raman spectrum observed by laser Raman spectroscopy is 190 to 240 cm-1, and the specific surface area as found by multipoint BET analysis of nitrogen adsorption is 10 to 100 m2/g.

Abstract: An object of the present invention is to provide a carbonaceous material (carbonaceous material for a non-aqueous electrolyte secondary battery) used for a negative electrode of a non-aqueous electrolyte secondary battery (e.g., a lithium ion secondary battery) exhibiting favorable charge/discharge capacities and low resistance and having favorable resistance to oxidative degradation. The present invention relates to a carbonaceous material for a non-aqueous electrolyte secondary battery, having an average interplanar spacing d002 of the (002) plane within a range of 0.36 to 0.42 nm calculated by using the Bragg equation according to a wide-angle X-ray diffraction method, a specific surface area within a range of 20 to 65 m2/g obtained by a nitrogen adsorption BET three-point method, a nitrogen element content of 0.3 mass % or less, an oxygen element content of 2.5 mass % or less, and an average particle diameter of 1 to 4 ?m according to a laser scattering method.

Abstract: An object of the present invention is to provide a carbonaceous material (carbonaceous material for a non-aqueous electrolyte secondary battery) used for a negative electrode of a non-aqueous electrolyte secondary battery (e.g., a lithium ion secondary battery) exhibiting favorable charge/discharge capacities and low resistance and having favorable resistance to oxidative degradation. The present invention relates to a carbonaceous material for a non-aqueous electrolyte secondary battery, having an average interplanar spacing d002 of the (002) plane within a range of 0.36 to 0.42 nm calculated by using the Bragg equation according to a wide-angle X-ray diffraction method, a specific surface area within a range of 8 to 30 m2/g obtained by a nitrogen adsorption BET three-point method, a nitrogen element content of 0.5 mass % or less, an oxygen element content of 0.3 mass % or less, and an average particle diameter of 1 to 4 ?m according to a laser scattering method.

Abstract: Provide are: a conjugated block copolymer capable of increasing the amount of optical absorption by a photoelectric conversion active layer and controlling the morphology thereof and capable of achieving excellent photoelectric conversion efficiency; and a photoelectric conversion element comprising a composition including an electron accepting material and this kind of conjugated block polymer. A ?-electron conjugated block copolymer comprising: a polymer block (A) which involving a monomer unit having at least one heteroaryl skeleton selected from the group consisting of a fused ?-conjugated skeleton, a fluorene, a carbazole, a dibenzosilole and a dibenzogermole containing at least one thiophene ring in a part of a chemical structure thereof; and a polymer block (B) involving a monomer unit of a thiophene-2,5-diyl group having a substituent at least at a 3-position thereof.

Abstract: Provided are: a conjugated block copolymer capable of increasing the amount of optical absorption by a photoelectric conversion active layer and controlling the morphology thereof and capable of achieving excellent photoelectric conversion efficiency; and a photoelectric conversion element comprising a composition including an electron accepting material using this kind of conjugated block polymer. A ?-electron conjugated block copolymer comprises: a polymer block (A) and a polymer block (B), each of which involves a monomer unit having at least one fused ?-conjugated skeleton including at least one thiophene ring in one part of the chemical structure thereof, the polymer block (A) and the polymer block (B) have different monomer units from each other.

Abstract: Provided is a conjugated block copolymer that is capable of morphology control and that can achieve superior conversion efficiency.