Kuraray Co., Ltd.

Shinshu University

Kurarayco., Ltd.

Taketoshi Okuno

Hideharu Iwasaki

Takafumi Izawa

Jun-Sang Cho

Nozomu Sugoh

Shohei Kobayashi

Motomi Matsushima

Tomohiro Kawakami

Naohiro Sonobe

Yasuhiro Tada

Hiroyuki Kawai

Tomohiro Hayakawa

Takuo Tsuruta

Hideo Hayashi

Takashi Hori

Shinya Inada

Toshihiro Hirai

Hideki Kamada

Kenichi Koyakumaru

Toshinori Kato

Jin Tokuyasu

Makoto Imaji

Kenta Aoki

Junji Fujioka

Junichi Arima

Tomiaki Otake

Shinya Tago

Akinori Yamabata

Kyomi Tajima

Hidetoshi Kudo

Akira Koshima

Keiichi Nishimura

Sayaka Ide

A hardly graphitizable carbonaceous material can be used in a negative electrode material for nonaqueous electrolyte secondary batteries (for example, a lithium ion battery) having not only high charge capacity but also high charge-discharge efficiency and being fully charged to be used and a method for producing the same. Such hardly graphitizable carbonaceous material may have an oxygen element content of 0.25% by mass or less.

Hardly graphitizable carbonaceous material for nonaqueous electrolyte secondary batteries fully charged to be used, method for producing same, negative electrode material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery fully charged to be used

The present invention relates to a carbonaceous material having a pore volume determined by performing Grand Canonical Monte Carlo simulation on an adsorption-desorption isotherm of carbon dioxide of 0.05 cm/g or more and 0.20 cm/g or less, and a ratio of desorption amount to adsorption amount (desorption amount/adsorption amount) at a relative pressure of 0.01 in the adsorption-desorption isotherm of 1.05 or more.

Carbonaceous material, method for producing same, and electrochemical device

The present invention relates to a carbonaceous material which is derived from a plant, having a specific surface area of 1800 to 3000 m/g as measured by a BET method, a hydrogen element content of 0.42% by mass or less and an oxygen element content of 1.5% by mass or less.

Carbonaceous material and method for producing same

A carbonaceous material for a non-aqueous electrolyte secondary battery, having an average interplanar spacing dof 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 m/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 &#x3bc;m according to a laser scattering method.

Carbonaceous material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte

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.

Carbonaceous material for negative pole active substance of nonaqueous electrolyte secondary battery, negative pole for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, and method for producing carbonaceous material

The present invention relates to a carbonaceous material having a specific surface area of 1,800 m/g to 3,000 m/g according to a BET method, an R-value of 1.2 or more and a G-band half-value width of 70 cmor more according to a Raman spectrum.

Carbonaceous material, carbonaceous material-containing electrode material for electric double layer capacitor, electrode for electric double layer capacitor, and electric double layer capacitor

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 dof 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 m/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 &#x3bc;m according to a laser scattering method.

Carbonaceous material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method for producing carbonaceous material for non-aqueous electrolyte secondary battery

The present invention relates to a carbonaceous material derived from a plant starting material, which is useful for electronic materials for conductive materials, capacitor electrodes, storage battery electrodes, nonaqueous electrolyte secondary battery electrodes and the like. The present invention relates to a carbonaceous material for electronic materials, which is obtained by burning a carbon precursor derived from palm husk, and which is configured such that: the potassium content in the carbonaceous material is 100 ppm or less; the calcium content in the carbonaceous material is 100 ppm or less; and the elemental oxygen content in the carbonaceous material is 0.25% by weight or less.

Carbonaceous material for electronic materials

Provided is a less hygroscopic carbonaceous material that is obtained from a plant-derived carbonaceous raw material and that, when used as a negative electrode material for a nonaqueous electrolyte secondary battery, allows the battery to exhibit good battery characteristics. Provided is a carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries. This carbonaceous material is a particulate carbonaceous material containing carbonaceous particles. The carbonaceous material has a BET specific surface area of 1 m/g or more and less than 20 m/g. Each of the carbonaceous particles of the carbonaceous material has a core and a skin covering the core. The core contains a calcined product of a plant-derived carbonaceous raw material. The skin is made of a material that has higher electron emission ability upon irradiation with an electron beam than a material of the core.

Carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries

Laminates including a nanofiber layer and a base layer, the nanofiber layer comprising polyamide filaments formed from a polyamide (a) and having an average fiber diameter of 10 to 1000 nm, and the base layer comprising fibers at least including polyamide fibers formed from a polyamide (a), where the polyamide (a) comprises a dicarboxylic acid unit and a diamine unit and where (i) the dicarboxylic acid unit comprising a terephthalic acid unit in the proportion of not lower than 60% by mole, and (ii) the diamine unit comprising at least one diamine unit selected from the group consisting of 1,9-nonanediamine unit and 2-methyl-1,8-octanediamine unit in the proportion of not lower than 60% by mole in total are provided, as well as separators for capacitors including the laminates.

Laminate, separator for capacitor, and capacitor

A dielectric material for a polymeric actuator having a moveable part of the polymeric actuator driven by an electric field, the dielectric material containing a block copolymer (A) having a microphase-separated structure including a polymer block (B1) and a polymer block (B2), both of which are immiscible with each other. A main compositional unit in both of the polymer block (B1) and the polymer block (B2) is a (meth)acrylic ester unit, the polymer block (B1) having an alpha-dispersion temperature of 70&#xb0; C. or more, and the polymer block (B2) having an alpha-dispersion temperature of 25&#xb0; C. or less. The polymeric actuator provides the dielectric material between electrodes.

Dielectric material for polymeric actuator, and polymeric actuator using the same

A method for producing ethers comprises the following steps: initiating telomerization process of a conjugated diene compound with an hydroxyl compound represented by the following formula (I):ROH&#x2003;&#x2003;(I)in the presence of a palladium compound, a tertiary isocyanide represented by the following formula (II):RNC&#x2003;&#x2003;(II),and a base; and adding halfway through the telomerization process a tertiary phosphine represented by the following formula (III):PRRR&#x2003;&#x2003;(III)(the respective symbols are defined in the description).

Method for producing ethers

According to the present invention, provided is an industrially advantageous process for producing an epoxidized polymer, with safety and efficiency, wherein the epoxidation of a polymer having an olefinic carbon-carbon double bond is effected under the presence of substantially no alkali metal ion by adding an aqueous solution containing (i) ammonium tungstate and/or tungstophosphoric acid and (ii) phosphoric acid, in which the amount of (ii) phosphoric acid is not less than 0.25 moles relative to 1 gram atom of tungsten atom contained in the (i) ammonium tungstate and/or tungstophosphoric acid, and an aqueous hydrogen peroxide, separately to a solution of said polymer and a quaternary ammonium salt in an organic solvent immiscible with water.

Growing community of inventors

Kurashiki, Japan

Taketoshi Okuno