Dexerials Corporation

Yokohama National University

Hitachi, Ltd.

Dai-ichi Kogyo Seiyaku Co., Ltd.

Nissan Motor Company Limited

Hitachi Media Electronics Co., Ltd.

Daiso Co., Ltd.

Other

Kuraray Co., Ltd.

Mitsui Petrochemical Industries, Ltd.

Nisshinbo Holdings Inc.

National University Corporation Yokohama National University

Kuraray Co., Ltd., Kurashiki Plant

Masayoshi Watanabe

Kouki Hatsuda

Makiya Ito

Hirofumi Kondo

Kyungsung Yun

Nobuo Tano

Michiyuki Kono

Masahito Nishiura

Kaoru Dokko

Katsuhiko Kimura

Hiroshi Ogasawara

Shozo Saegusa

Hirofumi Nakamoto

Katsuhito Miura

Toshio Sugiyama

Toshihiro Takekawa

Mitsuo Satake

Tomokazu Yamane

Shiguo Zhang

Takashi Ishikawa

Hiroaki Furuichi

Keiichi Yokoyama

Masao Iwaya

Satoshi Arai

Manabu Ochi

Masaya Horino

Akio Hiwara

Hideo Sotokawa

Hiroyuki Ohgi

Kazuhiko Ito

Yoshio Oozeki

Yu Onozaki

Shigeru Shoji

Yasuo Matoba

Junichi Senga

Takahiro Endo

Toshinori Kato

Tetsuo Ito

Masahiro Toriida

Masanori Yanagida

Hiroki Higobashi

Takahiro Sakashita

Tetsuo Itou

Risa Nozawa

Satoko Mita

Takako Sasano

Shinzo Kohjiya

Naoki Tachikawa

Mizuho Tsuchiya

Kazuhide Ueno

Azusa Yamazaki

Kazuki Yoshida

Ryuji Harimoto

Toshihiko Mandai

Ce Zhang

Jun-Woo Park

Zhe Li

Yuko Ikeda

A lubricating agent including an ionic liquid formed from a Bronsted acid (HX) and a Bronsted base (B), wherein the Bronsted base has a linear hydrocarbon group having 10 or more carbon atoms and the difference between the pKa value of the Bronsted acid in water and the pKa value of the Bronsted base in water is 12 or more.

Ionic liquid, lubricating agent, and magnetic recording medium

A production method for a cathode material of a lithium sulfur battery includes, in sequence: a step of preparing a first dispersed solution in which a carbon particle is dispersed in a lithium sulfate solution; a step of adding a solvent in the first dispersed solution, the solvent being a solvent in which lithium sulfate is insoluble; a step of separating a precursor particle from the first dispersed solution in which the solvent is added; and a step of changing the precursor particle into a cathode active material particle by heating the precursor particle under an inert atmosphere.

Production method for cathode material of lithium sulfur battery, cathode material of lithium sulfur battery, and lithium sulfur battery

A carbon material according to an embodiment contains: 2% by mass or more and 15% by mass or less of nitrogen and 0.3% by mass or more and 2.5% by mass or less of sulfur, and 40% by mass or more of the nitrogen is a graphitic nitrogen.

Carbon material, fuel cell, and method for producing carbon material

A lubricant including: an ionic liquid, which includes a conjugate acid (B) and a conjugate base (X), and is protic, wherein the ionic liquid is represented by the following general formula (1), and wherein the conjugate base is a conjugate base of sulfonic acid, a conjugate base of sulfonimide, or a conjugate base of trisulfonylmethide: where Rand Reach represent a hydrogen atom or Rand Rform a benzene ring together with carbon atoms to which Rand Rare bonded, Rrepresents a to straight-chain hydrocarbon group having 10 or more carbon atoms, and Rrepresents a hydrogen atom or a hydrocarbon group in the general formula (1).

Ionic liquid, lubricant, and magnetic recording medium

A lubricant including an ionic liquid, which includes a conjugate acid (B) and a conjugate base (X), and is protic, wherein the conjugate acid includes a straight-chain hydrocarbon group having 10 or more carbon atoms, and wherein the conjugate base is represented by the following general formula (1): where n is an integer of from 0 to 6 in the general formula (1).

A lubricant including an ionic liquid, which includes a conjugate acid (B) and a conjugate base (X), and is protic, wherein the ionic liquid is represented by the following general formula (1): where Rand Reach represent a hydrogen atom or Rand Rform a benzene ring together with carbon atoms to which Rand Rare bonded, and Rrepresents a straight-chain hydrocarbon group having 10 or more carbon atoms in the general formula (1).

An alkali metal-sulfur-based secondary battery, in which coulombic efficiency is improved by suppressing a side reaction during charge, and a reduction in discharge capacity by repetition of charge and discharge is suppressed and which has a long battery life and an improved input/output density, includes a positive electrode or a negative electrode containing a sulfur-based electrode active material; an electrolyte solution containing an ether compound such as THF and glyme and a solvent such as a fluorine-based solvent, wherein at least a part of the ether compound and the alkali metal salt forms a complex; and a counter electrode.

Alkali metal-sulfur-based secondary battery

An electrochemical cell includes an electrolyte membrane containing an ionic conductor. The ionic conductor includes:

Electrochemical cell and fuel cell using an ionic conductor

A polymer electrolyte which comprises an ionic liquid (A) and a block copolymer (B) as essential ingredients, which block copolymer (B) comprises one or more of polymer block(s) (P) being compatible with (A) and one or more of polymer block(s) (Q) being incompatible with (A). (A) and (P) mutually dissolve each other to form one phase (X), and (Q) forms a phase (Y) being incompatible with phase (X), and phase (X) and phase (Y) are mutually micro phase separated. The polymer electrolyte of the present invention shows practical ion conductivity, is excellent in retention of ionic liquid, and moreover, is also excellent in heat resistance and mechanical strength. Furthermore, the electrochemical device and actuator element of the invention are swiftly displaced in accordance with application of a voltage, and can be actuated stably for a long period due to the liquid-retaining property and mechanical strength of the polymer electrolyte used, and, therefore, can suitably be used in the fields of medical instruments, micro-machines, industrial robot, personal robot, etc.

Polymer electrolyte, electrochemical device, and actuator element

Electrochemical cell using an ionic conductor

To improve the reliability to an environmental temperature change of an optical pickup, an optical pickuphas a semiconductor laserfor generating a laser beam. An objective lens drive leads the laser beam to a predetermined position of a disk. The semiconductor laser and objective lens drive are mounted on a pickup hosing. The objective lens drive has a movable portionand the movable portion has an objective lensfor condensing the laser beam on the recording face of the disk. A fixed portionholds the movable portion through a support member. The fixed portion has a magnetic yoke. An extended portion formed by extending a part of the yoke to the fixed portion side and the upsideof a cutout formed at the intermediate portion of the fixed portion in the tracking direction are adhered and fixed.

Optical pickup

In order to improve reliability of an optical disk drive apparatus at low cost, a flexible substrate for making connection between an optical pick-up device incorporated in the optical disk drive apparatus and a drive side is divided into a first flexible substrate fixed to the optical pick-up body (for example, upper surface), and a second flexible substrate connected to the first flexible substrate and extending to the drive, wiring conductors formed on a connection end portion of the first flexible substrate and wiring conductors formed on a connection end portion of the second flexible substrate are superposed at a region adjacent an end of the case of the optical pick-up device body, and connected to each other by joining material, and a connection section between the wiring conductors is held down by a cover for protecting the optical pick-up device body.

Optical disk drive apparatus having a flexible substrate and wiring conductors

Provided are a polymeric electrolyte or a nonaqueous electrolyte that can improve a transport rate of charge carrier ions by adding a compound having boron atoms in the structure, preferably one or more selected from the group consisting of compounds represented by the following general formulas (1) to (4), and an electric device such as a cell or the like using the same.

Polyelectrolyte, non-aqueous electrolyte, and electrical device containing the same

Polymeric compounds are provided the use of which expedites dissociation of an electrolytic salt. The polymeric compounds have a trivalent boron atom which is a Lewis acid. Transport rates of charge carrier ions can be controlled by trapping counter ions of charge carrier ions in the polymeric chain.

Ion-conductive polymeric compound, polymeric electrolyte and electric device

Growing community of inventors

Yokohama, Japan

Masayoshi Watanabe