Asahi Kasei E-materials Corporation

Asahi Kasei Chemicals Corporation

Ekc Technology Inc.

Asahi Kasei Kabushiki Kaisha

Hisashi Takeda

Daisuke Inagaki

Akira Kuroda

Wai Mun Lee

Hiroshi Miyazawa

Atsushi Otake

Tomoaki Takahashi

Shintaro Inaba

Takanori Matsumoto

Kazuya Iidani

Cass X Shang

Yoshihiko Izumi

The redox flow secondary battery includes an electrolytic cell including a positive electrode cell, a negative electrode cell, and a separation membrane that separates the positive electrode cell and the negative electrode cell. Moreover, the above described redox flow secondary battery is configured as follows. That is, the separation membrane has a microporous membrane and an ion-exchange resin layer contacting the microporous membrane, and the air resistance of the separation membrane per thickness of 200 &#x3bc;m is 10000 sec/100 cc or more. Furthermore, the microporous membrane includes a polyolefin resin or a vinylidene fluoride resin and an inorganic filler. Further, the smoothness of at least a surface of the microporous membrane contacting the ion-exchange resin layer is 16000 seconds or less.

Separation membrane for redox flow secondary battery and redox flow secondary battery comprising the same

A microporous membrane winding includes a microporous membrane wound around a core. The core has an outer diameter of 5 inches or greater, and has an outer surface with a surface roughness of 3.0 &#x3bc;m or less. A microporous membrane that is excellent in thickness uniformity and is favorably used as a separator for a lithium-ion secondary battery can be obtained from the microporous membrane winding.

Microporous membrane winding and method for manufacturing the same

A polyolefin microporous film comprising polyethylene and polypropylene having a viscosity average molecular weight of 100,000 or higher, the polypropylene being contained in an amount of 4 wt % or more and the terminal vinyl group concentration per 10,000 carbon atoms in the polyolefin constituting the microporous film being 2 or more as measured by infrared spectroscopy. The microporous film has both of a good film breaking resistance and a low thermal shrinkage, is excellent in fuse property, and has a uniform film thickness. Particularly, the microporous film can retain safety in the oven safety test at 150&#xb0; C. for a battery which is required for use as a lithium ion battery separator.

Polyolefin microporous film

A composition that includes 2-(2-aminoethylamino)-ethanol, at least one of a chelating agent and a corrosion inhibitor, and water. The composition is capable of removing organic, organometallic and metal oxide residues from semiconductor substrates. The invention also relates to a method of removing etching residue from a semiconductor substrate.

Semiconductor process residue removal composition and process

Growing community of inventors

Tokyo, Japan

Hisashi Takeda