Mizusawa Industrial Chemicals, Ltd.

Kabushiki Kaisha Toshiba

Sony Corporation

Tosoh Corporation

Toshiba Infrastructure Systems & Solutions Corporation

Sapporo Breweries Limited

Toshiba Infrastructure Systems & Solutions Corporatio

Mizusawa International Chemicals, Ltd.

Mizusawa Industrial Chemicals A.s.

Canon Kabushiki Kaisha

Hitachi, Ltd.

Renesas Electronics Corporation

Hitachi Plant Technologies, Ltd.

Masanori Tanaka

Masahide Ogawa

Noriyuki Takahashi

Hidesato Saruwatari

Dai Yamamoto

Kazuya Kuriyama

Kinichi Ono

Norio Takami

Yasuhiro Harada

Keigo Hoshina

Izumi Serizawa

Yuuji Washio

Shinya Sato

Yuji Kawaguchi

Motoki Adachi

Yuki Watanabe

Takanori Shibata

Seiji Kojima

Yoshinao Tatebayashi

Hiromi Kobayashi

Yasuyuki Morishita

Kunio Goto

Asuna Hagiwara

Hideki Satake

Shuhei Kawasaki

Hideo Nishida

Teiji Sato

Shinichi Agata

Hideo Kihara

Koichi Usui

Tetsuro Kano

Hikaru Yoshikawa

Seikichi Takahashi

Hirotaka Hayashida

Yuji Iwahashi

Manabu Yagi

Yoshio Imai

Kiyoshi Urayama

Toshihiro Watanabe

Osamu Okumura

Tetsuya Kuwano

Tadaharu Kishibe

Takashi Mukai

Kiyoshi Takai

Masa-aki Kakimoto

Toshio Itou

Toshitada Nakazawa

Masaru Yoneyama

Yasuo Mizoguchi

Hironori Takatsuka

Koyoshi Takai

Toshimichi Fukuhara

Masanori Wakabayashi

Tatsuji Morimoto

Akira Kamon

Yoshihito Uzawa

Kouichi Yamada

Kouichi Usui

Kiochi Usui

According to one embodiment, a battery is provided. The battery includes a positive electrode, and a negative electrode including a negative electrode active material-containing layer including a niobium-titanium composite oxide and a conductive agent that includes a carbon material. The negative electrode active material-containing layer includes a principal surface facing the positive electrode. Assuming that the thickness of the negative electrode active material-containing layer is A, a ratio (C2/C1) of carbon content ratio C2 at a depth of 0.5 A from the principal surface to carbon content ratio C1 at a depth of 1 μm from the principal surface satisfies 2≤C2/C1≤30.

Battery and battery pack

According to one embodiment, provided is an electrode group including a stack that includes a positive electrode and a negative electrode. A first width of the positive electrode active material-containing layer of the positive electrode in a first direction is smaller than a second width of the negative electrode active material-containing layer of the negative electrode in the first direction. The electrode group has a wound structure where the stack is wound along the first direction. A length L corresponding to a difference between the second and first widths, a mass per unit area Mof the negative electrode active material-containing layer, and a ratio p/n of a capacity p of the positive electrode to a capacity n of the negative electrode satisfy a relationship of 40 mg/m≤(L×M)/(p/n)≤60 mg/m.

Battery group, battery, and battery pack

An electrode according to an embodiment contains an electrode mixture layer containing an active material and a conductive assistant. In a logarithmic differential pore volume distribution by a mercury intrusion method, the electrode mixture layer satisfies: a ratio P/Pwithin a range of 2 or more and less than 8, and a ratio S/Swithin a range of 3 or more and less than 10. Pis a value of a maximum logarithmic differential pore volume in a pore diameter range of 0.1 μm or more and 1 μm or less. Pis a value of a logarithmic differential pore volume of a pore diameter of 0.03 μm. Sis an integrated value in a pore diameter range of 0.1 μm or more and 1 μm or less. Sis an integrated value in a pore diameter range of more than 0 μm and less than 0.1 μm.

Electrode and nonaqueous electrolyte battery

According to one embodiment, an electrode group is provided. The electrode group includes a positive electrode active material-containing layer and a negative electrode active material-containing layer. The negative electrode active material-containing layer contains at least one titanium-containing composite oxide selected from the group consisting of a monoclinic niobium titanium composite oxide and an orthorhombic titanium-containing composite oxide. The electrode group satisfies the following formula:6500&#x2264;&#x2264;18500,

Electrode group, battery, and battery pack

According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode. The positive electrode includes a positive electrode active material-containing layer. The positive electrode active material-containing layer includes at least one lithium-nickel composite oxide and a conductive agent. The positive electrode active material-containing layer has, in a particle size distribution obtained by a laser diffraction scattering method, an average particle diameter dwithin a range of 1 &#x3bc;m to 5.5 &#x3bc;m, a maximum particle diameter within a range of 10 &#x3bc;m to 100 &#x3bc;m, a particle diameter dwithin a range of 0.5 &#x3bc;m to 3 &#x3bc;m, and X, represented by X=(d&#x2212;d)/d, within a range of 0.5 to less than 1.

Nonaqueous electrolyte battery

A nonaqueous electrolyte battery includes a container member, a positive electrode stored in the container member, a negative electrode stored in the container member, and a nonaqueous electrolyte stored in the container member. A gas composition in the container member satisfies, when a charge ratio of the nonaqueous electrolyte battery is set to 30% and the nonaqueous electrolyte battery is left stand at 35&#xb0; C. for 24 hrs,0.02 (cc/g)&#x2264;&#x2264;0.1 (cc/g)&#x2003;&#x2003;(1)0.05&#x2264;&#x2264;0.1&#x2003;&#x2003;(2)1&#x2264;&#x2264;9&#x2003;&#x2003;(3).

Nonaqueous electrolyte battery, and battery pack

The electrode according to an embodiment includes an electrode layer and an organic fiber-containing layer. The organic fiber-containing layer is provided on the electrode layer. The organic fiber-containing layer includes an organic fiber. The organic fiber-containing layer has a ratio tW/tD within a range of 1.1 to 2.55, where tW is a thickness [&#x3bc;m] in a wet state and tD is a thickness [&#x3bc;m] in a dry state. A ratio dW/dD is within a range of 0.95 to 1.05, where dW is an average fiber diameter [nm] of the organic fiber included in the organic fiber-containing layer in the wet state, and dD is an average fiber diameter [nm] of the organic fiber included in the organic fiber-containing layer in the dry state.

Electrode, electrode group and nonaqueous electrolyte battery

According to one embodiment, a nonaqueous electrolyte battery includes a case member, a negative electrode terminal, an electrode group, a negative electrode lead, a rupture member, and a gas releasing portion. The electrode group is provided in the case member, and includes positive and negative electrodes. The negative electrode lead electrically connects the negative electrode terminal to the negative electrode. The gas releasing portion is provided in the case member, is able to transfer a heat from the negative electrode lead and includes a zeolite-based porous material.

Nonaqueous electrolyte battery pack with gas-releasing portion for transferring heat

A non-aqueous electrolyte secondary battery of an embodiment includes an exterior member, a negative electrode containing a titanium-containing oxide housed in the exterior member, a positive electrode housed in the exterior member, a separator housed in the exterior member and arranged between the positive electrode and the negative electrode, and a non-aqueous electrolyte solution housed in the exterior member. At least one type or more chain carbonates are contained in a solvent of the non-aqueous electrolyte solution. A self-diffusion coefficient of the chain carbonate in &#x2212;20&#xb0; C. is front 1.4&#xd7;10to 2.0&#xd7;10m/sec.

Non-aqueous electrolyte secondary battery and battery pack

In one embodiment, a nonaqueous electrolyte secondary battery includes an electrode group, a battery container, an insulation member, and a nonaqueous electrolyte solution. The electrode group includes a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode. The insulation member, which insulates the positive electrode and the negative electrode from the battery container and absorbs vibration, includes a resin and an inorganic material and has a bending elastic modulus between 600 MPa and 1,500 MPa, a specific heat between 0.25 cal/&#xb0; C.&#xb7;g and 0.40 cal/&#xb0; C.&#xb7;g, and a thermal conductivity between 0.3 W/m&#xb7;K and 0.6 W/m&#xb7;K.

Nonaqueous electrolyte secondary battery

The present invention provides the amorphous silica particles having a double structure of a core of the dense amorphous silica and a shell of the bulky amorphous silica, having a volume-based median diameter of from 1 to 5 &mgr;m and containing not more than 10% by volume of fine particles having a particle diameter of not larger than 0.5 &mgr;m. The amorphous silica particles of the double structure have constant particle diameters not only in the powdery state but also in a state where they are blended in a coating material or in a resin, without developing fine particles, exhibit excellent delustering action and antiblocking action, exhibit decreased abrading property, and exhibit excellent resistance against scars or abrasion.

Amorphous silica particles having a double structure, process for producing the same and use

The present invention provides the amorphous silica particles having a double structure of a core of the dense amorphous silica and a shell of the bulky amorphous silica, having a volume-based median diameter of from 1 to 5 .mu.m and containing not more than 10% by volume of fine particles having a particle diameter of not larger than 0.5 .mu.m. The amorphous silica particles of the double structure have constant particle diameters not only in the powdery state but also in a state where they are blended in a coating material or in a resin, without developing fine particles, exhibit excellent delustering action and antiblocking action, exhibit decreased abrading property, and exhibit excellent resistance against scars or abrasion.

Amorphous silica particles having a double structure, process for

A stabilizing agent for beer comprising a particular amorphous silica exhibiting a large negative zeta-potential in the pH region of the beer. The amorphous silica is of the xerogel type and has a specific surface area of from 100 to 600 m.sup.2 /g, a porous volume of 1 to 2 cc/g, and OH groups in a number of not larger than 7/nm.sup.2 on the silica surface, and an aqueous suspension thereof exhibits a pH of from 4 to 6.2 and a zeta-potential of negative polarity, the absolute value thereof being not smaller than 20 mV. When used as a stabilizing agent for beer, the amorphous particulate silica effectively removes the haze since the aqueous suspension thereof exhibits a weakly acidic pH which is close to that of the beer and a large negative zeta-potential, and helps improve froth-holding property and fragrance-retaining property of the beer.

Stabilizing agent for beer

A reel brake device for a tape reel of a magnetic tape cassette has a pair of braking strips for a supply reel and a take-up reel. The braking strips are formed with at least one hinged section to allow resilient deformation in order to absorb kinematic energy exerted on the braking strips from the tape reel as the reel is subjected to rotational torque or lateral force. By providing the capability of resilient deformation for the braking strips, braking engagement can be maintained even when vibration exerting rotational force is applied to the tape reels.

Brake device for tape reel in magnetic tape cassette

Growing community of inventors

Tokyo, Japan

Masanori Tanaka