Asahi Kasei Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Nippon Steel Sumitomo Metal Corporation

Nippon Steel Corporation

Sumitomo Metal Industries, Inc.

Central Glass Company, Limited

Nippon Steel & Sumitomo Metal Corporatin

Nobuhiro Okada

Kazuteru Umetsu

Kazuhiko Kusunoki

Nobuyoshi Yashiro

Yuima Kimura

Hiroshi Hayashi

Masahiro Yamazaki

Hiroshi Suzuki

Kazuhito Kamei

Hironori Daikoku

Hidemitsu Sakamoto

Motohisa Kado

Takeshi Kamijo

Yuichiro Hirakawa

Hitoshi Morita

Keita Kusuzaka

Atsushi Tomizawa

Osamu Saito

Yusuke Yamahata

Kensuke Niimura

Naoaki Shimada

Akihiro Yamanaka

Hiroaki Kubota

Koji Moriguchi

Sei Hiraki

Yuichi Tsukaguchi

Shintaro Oga

Taku Suetomi

Hidetoshi Suwa

Kouji Takatani

Kouji Moriguchi

Atsushi Hosokibara

Katsunori Danno

Tadashi Matsushita

Hiroyuki Fujii

Masahito Hanao

Masaaki Kurihara

Tomokazu Ishii

Koichi Hiraoka

Akihiro Yauchi

Yoichiro Kawai

Kazuyoshi Morita

Hideaki Sueta

Kimiya Murakami

Hidefumi Takami

Yutaka Itoh

Tekeshi Kamijo

Yoshihisa Ueda

Tadashi Tanaka

Tatsuhiko Ikeda

Akiko Kaneko

Takashi Yamasaki

Shiro Mori

Masayuki Kawamoto

Kozo Ota

Provided is a positive electrode precursor having a positive electrode active material layer, wherein the mass proportion Aof a carbon material in the positive electrode active material layer accounts for 15-65 mass %, the mass proportion Aof a lithium transition metal oxide in the positive electrode active material layer accounts for 5-35 mass %, the mass proportion Aof an alkali metal compound in the positive electrode active material layer accounts for 10-50 mass %, A/Ais 0.10-2.00, A/Ais 0.50-3.00, and the positive electrode active material layer has a peel strength of 0.02-3.00 N/cm.

Positive electrode coating liquid, positive electrode precursor, and nonaqueous lithium electric storage element

A lithium ion secondary cell comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte that contains lithium ions, the lithium ion secondary cell being such that: the positive electrode has a positive electrode current collector and a positive electrode active material layer; the positive electrode active material layer contains a positive electrode active material and a lithium compound; the positive electrode active material includes a transition metal oxide; the concentration of the lithium compound, which is the portion other than the positive electrode active material in the positive electrode active material layer, is 0.1-10 mass %; the negative electrode has a negative electrode current collector and a negative electrode active material layer; the negative electrode active material layer contains 50-95 mass % of a carbon material and 5-50 mass % of an alloy-based active material.

Lithium ion secondary battery

Provided is a non-aqueous lithium-type electricity storage element which includes a positive electrode current collector having a positive electrode active material layer disposed thereon, wherein, in a solid-stateLi-NMR spectrum of the positive electrode active material layer, a signal area ratio a/b, which is the ratio of a signal area ratio of component A having a signal at least at &#x2212;2 to 2.5 ppm to a signal area of component B having a signal at &#x2212;6 to &#x2212;2.5 ppm is 1.5 to 20.0.

Non-aqueous lithium-type electricity storage element

This electromagnetic stirring device configured to apply an electromagnetic force which generates a swirling flow around a vertical axis to molten metal in a mold by generating a rotating magnetic field in the mold, which is a quadrangular tubular mold for continuous casting, the electromagnetic stirring device provided with an iron core enclosing the mold at a side of the mold and including two teeth arranged side by side in a circumferential direction of the mold so as to face an outer side surface for each of outer side surfaces of the mold, coils wound around the respective teeth of the iron core, and a power supply device which applies an alternating current to each of the coils with a phase shift by 90&#xb0; in arrangement order of the coils so as to generate the rotating magnetic field.

Electromagnetic stirring device

This mold equipment is mold equipment provided with a mold, an electromagnetic brake device, and a control device. An immersion nozzle is provided with a pair of discharge holes of molten metal, the electromagnetic brake device is provided with an iron core including a pair of teeth and coils wound around the respective teeth, the coils on one side are connected in series in a first circuit, the coils on the other side are connected in series in a second circuit, and the control device is able to independently control voltage and current applied to each of the first and second circuits for each circuit, detects a drift of a discharge flow between the pair of discharge holes on the basis of the voltage applied to the coils in the first circuit and the voltage applied to the coils in the second circuit, and controls the current flowing through the first circuit and the current flowing through the second circuit on the basis of a detection result.

Mold equipment and continuous casting method

A nonaqueous lithium-type power storage element comprising a positive electrode, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions. The negative electrode has: a negative electrode collector; and a negative electrode active material layer containing a negative electrode active material, said negative electrode active material layer being provided on one surface or both surfaces of the negative electrode collector. The negative electrode active material contains a carbonaceous material capable of storing or releasing lithium ions. Furthermore, the positive electrode has: a positive electrode collector; and a positive electrode active material layer containing a cathode active material, said positive electrode active material layer being provided on one surface or both surfaces of the positive electrode collector. The positive electrode active material contains activated carbon. Also, the positive electrode active material layer contains one or more compounds selected from formulas (1) to (3) in an amount of 1.60&#xd7;10to 300&#xd7;10mol/g per unit mass of the positive electrode active material layer. LiX&#x2014;ORO&#x2014;XLi (1) LiX&#x2014;ORO&#x2014;XR(2) RX&#x2014;ORO&#x2014;XR(3) (In the formulas, RR, RX, and Xrepresent groups defined in the specification of the application.)

Nonaqueous lithium-type power storage element

This positive electrode precursor includes: a positive electrode active material containing a carbon material and an alkali metal compound, wherein 5&#x2264;A&#x2264;35, when A (g/m) is a weight of the alkali metal compound in the positive electrode active material layer at one surface of the positive electrode precursor, 10&#x2264;B&#x2264;100 as well as 0.20&#x2264;A/B&#x2264;1.00, when B (g/m) is a weight of the positive electrode active material in the positive electrode active material layer, and 1&#x2264;C&#x2264;20, when C (m/cm) is a specific surface area per unit area as measured by the BET method at one surface of the positive electrode precursor.

Positive electrode precursor

A lithium ion secondary battery of the present disclosure is provided with a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte containing lithium ions.

A molding facility in continuous casting enabling the quality of the cast slab to be achieved stably even if improving the productivity, the molding facility provided with a mold for continuous casting use, a first water box and second water box storing cooling water for cooling the mold, an electromagnetic stirring device imparting to molten metal in the mold an electromagnetic force causing a swirling flow to be generated in a horizontal plane, and an electromagnetic brake device imparting to a discharge flow of molten metal to an inside of the mold from a submerged nozzle an electromagnetic force in a direction braking the discharge flow, the first water box, the electromagnetic stirring device, the electromagnetic brake device, and the second water box being placed in that order from above to below at an outside surface of a long side mold plate of the mold so as to fit between a top end and bottom end of the long side mold plate, a core height Hof the electromagnetic stirring device and a core height Hof the electromagnetic brake device satisfying 0.80&#x2264;H/H&#x2264;2.33.

Molding facility

Provided is a nonaqueous lithium power storage element that can suppress excessive decomposition of a lithium compound remaining in a positive electrode, can suppress gas generation at high voltages, and can suppress capacity declines during high-load charge/discharge cycling. The nonaqueous lithium power storage element according to the present embodiment has a positive electrode that contains a lithium compound other than an active material, a negative electrode, a separator, and a lithium ion-containing nonaqueous electrolyte, wherein in the elemental map provided by SEM-EDX of the surface of the positive electrode, the area overlap ratio Uof the fluorine map relative to the oxygen map, as provided by binarization based on the average value of the brightness values, is 40% to 99%.

Nonaqueous lithium power storage element

Method of preparing a nonaqueous lithium power storage element, by providing a nonaqueous lithium power storage element comprising a positive electrode precursor containing a lithium compound other than an active material, a negative electrode, a separator, a nonaqueous electrolytic solution containing lithium ions, and a casing; and applying a voltage of 4.2V or more to the nonaqueous lithium power storage element to decompose the lithium compound in the positive electrode precursor and pre-dope the negative electrode with the lithium ions, while releasing a gas generated from decomposition of the lithium compound either out of an opening of the casing or through a degassing valve or gas permeable film.

Nonaqueous lithium storage element

Provided is a nonaqueous lithium-type power storage element in which a lithium compound is included in positive electrode, wherein energy loss due to voltage decrease under high temperatures and high voltages is reduced, and the high-load charge and discharge cycle characteristics are exceptional.

The disclosure provides a nonaqueous lithium-type power storage element having a positive electrode, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions.

A manufacturing method for a bent member of the present invention includes a holding step of holding one end portion of a long steel material having an opening end in a longitudinal direction by a chuck, a feeding step of feeding the steel material in the longitudinal direction with the one end portion as a head after the holding step, a heating step of performing high-frequency induction heating on a portion of the steel material in the longitudinal direction to form a heated portion, a bending step of moving the chuck in a three-dimensional direction to apply a bending moment to the heated portion, and a cooling step of injecting a cooling medium to the heated portion to cool the heated portion after the bending step. When the heating step is started, the chuck is cooled by the cooling medium in a state where a heating amount applied to the one end portion when the heated portion is formed on the one end portion is greater than that of an upstream side adjacent portion adjacent to the upstream side of the one end portion as seen along a feeding direction of the steel material.

Manufacturing method for bent member and hot-bending apparatus for steel material

This nonaqueous lithium power storage element contains a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte that contains lithium ions. The positive electrode has a positive electrode current collector and a positive electrode active material layer disposed on one surface or both surfaces of the positive electrode current collector, and the positive electrode active material layer contains a positive electrode active material that contains a carbon material. When the pore distribution of the positive electrode active material layer is measured by mercury intrusion, the pore distribution curve for the relationship between the pore diameter and log differential pore volume has at least one peak having a peak value of 1.0-5.0 mL/g for the log differential pore volume in the pore diameter range of 0.1-50 &#x3bc;m, and the total cumulative pore volume Vp in the pore diameter range of 0.1-50 &#x3bc;m is 0.7-3.0 mL/g.

Growing community of inventors

Tokyo, Japan

Nobuhiro Okada