Hitachi Maxell, Limited

Hitachi, Ltd.

Maxell Holdings, Ltd.

Other

Mitsubishi Electric Corporation

Maxell, Ltd.

Hitachi Powdered Metals Co., Ltd.

Kanto Kagaku Kabushiki Kaisha

Hitachi Maxwell, Ltd.

Microconnect Corp.

Hideaki Katayama

Toshihiro Abe

Nobuaki Matsumoto

Yoshinori Sato

Juichi Arai

Mitsuru Kobayashi

Shigeo Aoyama

Hideki Takahashi

Akio Takahashi

Yuichi Satsu

Hiroaki Miyata

Hiroyuki Yamaguchi

Noboru Baba

Chio Ishihara

Kazuo Asaka

Yuzo Ito

Chikara Tanaka

Yasutaka Kuroki

Koji Yamanaka

Haruo Akahoshi

Fusaji Kita

Shoji Saibara

Masaru Kato

Hiroshi Abe

Kazuhiro Satou

Tetsuo Kunii

Ko Kanaya

Takao Iwayanagi

Makito Yokoe

Mitsuhiro Kishimi

Kazuhiro Iyomasa

Shohei Imai

Hiroaki Maehara

Tomoe Takamura

Eri Kojima

Toshiyuki Edamoto

Keigo Aoi

Masahiko Okada

Hiroyuki Ootsuka

An electrochemical device of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator. The separator includes a first porous layer composed mainly of a thermoplastic resin and a second porous layer composed mainly of insulating particles with a heat-resistant temperature of 150° C. or higher. The first porous layer is disposed to face the negative electrode.

Electrochemical device comprising separator with laminated porous layers

An electrochemical device having excellent safety at high temperature is provided by using a separator for an electrochemical device, which is made of a porous film comprising: a porous base () having a heat-resistant temperature of 150&#xb0; C. or higher and including filler particles (); at least one kind of shutdown resin () selected from the group consisting of resin A that has a melting point in a range of 80&#xb0; C. to 130&#xb0; C. and resin B that absorbs an electrolyte and swells due to heating, and the swelling degree is increased as the temperature rises; and a binder ().

Separator for electrochemical device, and electrochemical device

An electrochemical device of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator. The separator includes a first porous layer composed mainly of a thermoplastic resin and a second porous layer composed mainly of insulating particles with a heat-resistant temperature of 150&#xb0; C. or higher. The first porous layer is disposed to face the negative electrode.

A semiconductor device is provided with one or more gate fingers () that are provided in an active region on a semiconductor substrate (), and a source finger () and a drain finger () that are provided in the active region and arranged alternately to allow each gate finger to be sandwiched between the source and drain fingers. The semiconductor device includes terminal circuit () that has inductive impedance at the frequency of a signal input to an input terminal of the one or more gate fingers, and is directly or indirectly connected to the one or more gate fingers at an area being spaced away from a connecting position of the input terminal () of the one or more gate fingers ().

Semiconductor device

A slurry for forming an insulating layer of the present invention includes heat-resistant insulating fine particles, a thickening agent, and a dispersion medium. The insulating fine particles are dispersed in the dispersion medium. The slurry for forming an insulating layer has a viscosity of 5 to 500 mPa&#xb7;s. The proportion of particles with a particle size of 1 &#x3bc;m or less in the insulating fine particles is 30 vol % or more and the proportion of particles with a particles size of 3 &#x3bc;m or more in the insulating fine particles is 10 vol % or less. An electrochemical device of the present invention includes a separator for an electrochemical device of the present invention that is produced using the slurry for forming an electrochemical device of the present invention.

Slurry for forming insulating layer, separator for electrochemical device, method for producing the same, and electrochemical device

Method for producing electrochemical device

A nonaqueous electrolyte battery of the present invention includes a positive electrode having a positive active material capable of intercalating and deintercalating a lithium ion, a negative electrode having a negative active material capable of intercalating and deintercalating a lithium ion, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The heat generation starting temperature of the positive electrode is 180&#xb0; C. or higher. The separator includes heat-resistant fine particles and a thermoplastic resin. The proportion of particles with a particle size of 0.2 &#x3bc;m or less in the heat-resistant fine particles is 10 vol % or less and the proportion of particles with a particle size of 2 &#x3bc;m or more in the heat-resistant fine particles is 10 vol % or less. The separator effects a shutdown in the range of 100&#xb0; C. to 150&#xb0; C.

Battery separator and nonaqueous electrolyte battery

The separator for a battery according to the present invention is a separator for a battery including an insulator layer containing a fibrous material having a heat resistant temperature of equal to or higher than 150&#xb0; C., insulating inorganic fine particles and a binder, or a separator for a battery including a porous layer formed of a thermal melting resin and an insulator layer containing insulating inorganic fine particles and a binder, wherein water content per unit volume is equal to or smaller than 1 mg/cmwhen the separator is held for 24 hours in an atmosphere with a relative humidity of 60% at 20&#xb0; C. The use of the separator for a battery according to the present invention makes it possible to provide a lithium secondary battery that has favorable reliability and safety and is excellent in storage characteristics and charge-discharge cycle characteristics.

Separator for battery, method for manufacturing the same, and lithium secondary battery

The present invention provides a lithium secondary battery using a separator including a porous film formed by binding inorganic oxide particles together with a binder. The inorganic oxide particles are treated so that an amount of alkali metal elements eluted therefrom when they are immersed in ion exchange water is reduced to 1000 ppm or less. As a result, it is possible to provide a lithium secondary battery with a high degree of reliability, whose characteristics deteriorate less when it is used or stored for an extended period.

Porous film for separator, battery separator, battery electrode, and manufacturing methods therefor, and lithium secondary battery

A separator for an electrochemical device of the present invention includes a porous film including: a filler; an organic binder; and at least one resin selected from resin A that has a melting point of 80 to 140&#xb0; C. and resin B that absorbs a non-aqueous electrolyte and swells upon heating and whose swelling degree increases with increasing temperature, and the filler contains boehmite having a secondary particle structure in which primary particles are connected.

Separator for electrochemical device, electrode for electrochemical device, and electrochemical device

A separator for batteries according to the present invention includes a multilayer porous film having a resin porous film containing a thermoplastic resin as a main component and a heat resistant porous layer containing heat resistant particles as a main component, and the heat resistant porous layer has a thickness of 1 to 15 &#x3bc;m, and the 180&#xb0; peel strength between the resin porous film and the heat resistant porous layer is 0.6 N/cm or more.

Separator for battery and nonaqueous electrolyte battery using same

An electrochemical device having excellent safety at a high temperature is provided by using a separator for an electrochemical device, which is made of a porous film including a first separator layer and a second separator layer. The first separator layer includes, as a main ingredient, at least one kind of resin selected from the group consisting of resin A that has a melting point in a range of 80&#xb0; C. to 130&#xb0; C., and resin B that absorbs a nonaqueous electrolyte and swells due to heating and whose swelling degree is increased as the temperature rises, the second separator layer includes, as a main ingredient, a filler that has a heat-resistant temperature of not lower than 150&#xb0; C., and at least one of the first separator layer and the second separator layer includes flakes.

Separator for electrochemical device and method for producing the same, and electrochemical device and method for producing the same

A protective circuit connected between a terminal of a semiconductor integrated circuit and ground (GND), comprises: a first diode having an anode connected to the terminal of the semiconductor integrated circuit; a second diode having an anode connected to GND and a cathode connected to the cathode of the first diode; a transistor having a collector or drain connected to the terminal of the semiconductor integrated circuit, and an emitter or source connected to GND; and at least one third diode connected in series in a forward direction from the cathode of the first diode toward the base or gate of the transistor.

Protective circuit

An ion-conductive electrolyte which comprises a compound having in the molecule a structure represented by the following chemical formula and an electrolyte salt; and a cell employing the ion-conductive electrolyte. The ion-conductive electrolyte has a low vapor pressure, has a high ion conductivity even at room temperature, and has a high lithium ion transport number. With this ion-conductive electrolyte, a highly safe cell having excellent discharge characteristics can be provided.

Ion-conductive electrolyte and cell employing the same

Organic borates having the formula:The borates are highly soluble in solvent of low dielectric constant. Also disclosed are nonaqueous electrolytes made from these organic borates; lithium secondary batteries with improved high-temperature storage characteristics; and electric appliances that comprises the battery and are free of protection circuits.

Organic borate compounds and the nonaqueous electrolytes and lithium secondary batteries using the compounds

Growing community of inventors

Osaka, Japan

Hideaki Katayama