Ube Industries, Inc.

Ube Corporation

Hirofumi Takemoto

Hiroshi Fujino

Nobuyuki Kuroda

Mitsuo Yamanaka

Koji Abe

Junichi Kugimoto

Takaaki Kuwata

Kohei Ninomiya

Yoshizumi Tanaka

Yasumasa Iwamoto

Osamu Yamazaki

Kazuhiro Miyoshi

Tokuo Matsuzaki

Masayuki Nishio

Takato Nakamura

Ken Nakamura

Masaki Yoshio

Tsunao Matsuura

Chisen Hashimoto

Hideo Shimomura

Koji Kaiso

Kazuo Hashimoto

Hideya Yoshitake

Atsuo Hitaka

Keiichirou Koyashiki

Kenji Fukuda

Atsuyoshi Nakagawa

Yoshiki Kurihara

The present invention provides a lithium titanate powder for an electrode of an energy storage device, the lithium titanate powder comprising LiTiOas a main component, having a specific surface area of 4 m/g or more, and containing at least one localized element selected from the group consisting of boron (B), Ln (where Ln is at least one metal element selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Hb, Er, Tm, Yb, Lu, Y, and Sc), and M1 (where M1 is at least one metal element selected from W and Mo), wherein boron (B), Ln, and M1 as the localized element are localized on or near surfaces of lithium titanate particles forming the lithium titanate powder.

Lithium titanate powder and active material ingredient for electrode of power storage device, and electrode sheet and power storage device using same

Provided is a lithium titanate powder for an electrode of an energy storage device, wherein the lithium titanate powder includes LiTiOas a main component and has a specific surface area of 5 to 50 m/g, a total-fine pore volume of the lithium titanate powder is 0.03 to 0.5 ml/g and the lithium titanate powder includes a phosphorus atom in an amount of 0.03 to 1% by mass, an active material containing the lithium titanate powder, an electrode sheet containing the active material, and an energy storage device using the electrode sheet.

Lithium titanate powder including phosphorous, active material, electrode sheet, and energy storage device using the same

Provided is a lithium titanate powder for an electrode of an energy storage device, an active material containing the same, and an energy storage device using the active material. The lithium titanate powder comprises LiTiOas a main component, and wherein, when a volume surface diameter calculated from specific surface area determined by the BET method is Dand a crystallite diameter calculated from half-peak width of (111) plane of LiTiOby the Scherrer equation is D, Dis 0.1 to 0.6 &#x3bc;m; Dis larger than 80 nm; D/D(&#x3bc;m/&#x3bc;m), ratio of Dto D, is 3 or less; M (wherein M is at least one type of metal element selected from a group consisting of Mg, Zn, Al, Ga, and In) is contained; and when atomic concentrations of the M and titanium at 5 nm inner positions from a surface of a lithium titanate particle are D(atm %) and Dti (atm %) respectively, and when atomic concentration of the M at 100 nm inner position from the lithium titanate particle surface is D(atm %), following formulas (I) and (II) are satisfied.1/2&#x2267;5&#x2003;&#x2003;(I)0.02&#x2266;1/&#x2266;0.4&#x2003;&#x2003;(II)

Lithium titanate powder for electrode of energy storage device, active material, and energy storage device using the same

Provided is a lithium titanate powder for an electrode of an energy storage device, the lithium titanate powder comprising LiTiOas a main component, wherein, when the volume surface diameter calculated from the specific surface area determined by the BET method is represented as Dand the crystallite diameter calculated from the half-peak width of the peak of the (111) plane of LiTiOby the Scherrer equation is represented as D, Dis 0.1 to 0.6 &#x3bc;m, Dis greater than 80 nm, and (D/D(&#x3bc;m/&#x3bc;m)) the ratio of Dto Dis 3 or less. Also provided are an active material including the lithium titanate powder and an energy storage device using the active material.

Lithium titanate powder, active material, and energy storage device using the same

There is disclosed a conductive resin composition, comprising: (a) a resin component, and (b) a fine carbon fiber dispersed in the resin component, wherein a graphite-net plane consisting solely of carbon atoms forms a temple-bell-shaped structural unit comprising closed head-top part and body-part with open lower-end, 2 to 30 of the temple-bell-shaped structural units are stacked sharing a common central axis to form an aggregate, and the aggregates are connected in head-to-tail style with a distance to form the fiber. The resin composition has high conductivity while maintaining the original physical properties of the resin.

Conductive resin composition

The present invention provides an electrode material for a secondary battery wherein the inside and the surface of a lithium-titanium complex oxide is composited with a fine carbon fiber as a network.

Lithium&#x2014;titanium complex oxide electrode material conjugated with fine carbon fiber

Disclosed is a lithium secondary battery which is excellent in battery characteristics such as long-term cycle characteristics, capacity and shelf life characteristics. Also disclosed is a nonaqueous electrolyte solution which can be used for such a lithium secondary battery. Specifically disclosed is a nonaqueous electrolyte solution for lithium secondary batteries obtained by dissolving an electrolyte salt in a nonaqueous solvent which is characterized by containing 0.01-10% by weight of a carboxylate compound represented by the general formula (I) below and 0.01-10% by weight or 0.01-10% by volume of a vinylene carbonate and/or 1,3-propane sultone. Also disclosed is a lithium secondary battery using such a nonaqueous electrolyte solution. (In the formula, Rrepresents a hydrogen atom or COORgroup, Rand Rrespectively represent an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group or a phenyl group, and X represents an alkynylene group or an alkenylene group.) 

Nonaqueous electrolyte solution and lithium secondary battery using same

The present invention provides a lithium secondary battery having excellent battery cycle property, electrical capacity, storage characteristic and other battery characteristics for a long period of time, and a nonaqueous electrolytic solution which is usable for the lithium secondary battery. A nonaqueous electrolytic solution in which an electrolyte salt is dissolved in a nonaqueous solvent, comprising (i) a dicarbonyl compound represented by the general formula (I), or (ii) a dicarbonyl compound represented by the general formula (II) and vinylene carbonate and the like in the nonaqueous electrolytic solution. (wherein Rrepresents a hydrogen atom, an alkyl group, an alkenyl group, a phenyl group or the like; and X represents a hydrogen atom, an Rgroup or an ORgroup. Rrepresents an alkyl group, an alkenyl group, a phenyl group or the like.) (wherein Rand X are the same as above; Y and Z represents a hydrogen atom, an Rgroup, an ORgroup, a CORgroup or a CHCORgroup; and n is 1 to 6.).

In reduction of an epoxy group-containing organic compound, for example, a C -C saturated or unsaturated epoxy cycloaliphatic compound, in the presence of a nickel catalyst, by bringing the compound into contact with hydrogen, the target compound can be produced at a high yield by adding a basic substance (for example, an alkali metal hydroxide, an alkali metal carbonate, an alkali metal alkoxide, and an amine compound having 1 to 3 C -C alkyl groups), to the reduction reaction system, to thereby restrict production of by-products due to a side deoxidation reaction.

Method of reducing epoxidized organic compound with hydrogen

Described is a process for producing 1,2-epoxy-5,9-cyclododecadiene, which comprises bringing 1,5,9-cyclododecatriene into contact with hydrogen peroxide in the presence of a carboxylic acid having an acid dissociation constant K at 25&deg; C. of 5.0&times;10,&lE;K&lE;1.0&times;10,. The present invention makes it possible to provide an industrially desirable process which permits the production of 1,2-epoxy-5,9-cyclododecadiene with good selectivity and facilitates control of reaction including shortening of the reaction time.

Process for producing epoxycyclododecadiene

1,2-epoxy-5,9-cyclododecadiene is produced with a high selectivity thereto by epoxidizing 1,5,9-cyclododecatriene in a continuous multi-stage oxidation apparatus having a plurality of reactors connected to each other in series in such a manner that (1) in a first reactor, 1,5,9-cyclododecatriene, hydrogen peroxide, catalyst components and optionally a mineral acid are subjected to an epoxidation reaction; (2) the resultant reaction mixture delivered from the first reactor is passed through one or more succeeding reactors to further epoxidize the non-reacted 1,5,9-cyclododecatriene with the non-reacted hydrogen peroxide; and (3) the final reaction mixture produced in a rearend reactor is delivered from the oxidation apparatus, and optionally subjected to an isolation-refining procedure wherein the target 1,2-epoxy-5,9-cyclododecadiene is refined and collected and the non-reacted 1,5,9-cyclododecatriene is recovered and recycled to the epoxidation procedure.

Growing community of inventors

Ube, Japan

Hirofumi Takemoto