Phenolic Or Thermosetting Resin Patents (Class 429/253)
  • Patent number: 10985354
    Abstract: This separator for electricity storage devices comprises a porous base and a thermoplastic polymer layer that is arranged in at least a part of the outermost surface of at least one surface of the porous base, and wherein: a thermoplastic polymer contained in the thermoplastic polymer layer contains a copolymer that has, as a monomer unit, an ethylenically unsaturated monomer (P) having a polyalkylene glycol group; and the thermoplastic polymer layer contains the thermoplastic polymer in an amount of more than 3% by mass but 100% by mass or less if the thermoplastic polymer layer is taken as 100% by mass.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: April 20, 2021
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Hiroshi Miyazawa, Masanori Nakazawa, Masatoshi Ikemi, Naoki Machida
  • Patent number: 10396327
    Abstract: Glass-fiber mats for lead-acid batteries are described. The glass-fiber mats may include a plurality of glass fibers held together with a binder. The binder may be made from a binder composition that includes (i) an acid resistant polymer, and (ii) a hydrophilic agent. The hydrophilic agent increases the wettability of the glass-fiber mat such that the glass-fiber mat forms a contact angle with water or aqueous sulfuric acid solution of 70° or less. Also described are methods of making the glass-fiber mats that include applying a binder composition to the glass fibers, and including a hydrophilic agent in the glass fiber mat that increases the wettability of the mat. The hydrophilic agent may be added to the binder composition, applied to the glass-fiber mat, or both.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: August 27, 2019
    Assignee: Johns Manville
    Inventors: Albert G Dietz, III, Zhihua Guo, Souvik Nandi, Gautam Sharma
  • Patent number: 9680176
    Abstract: A positive electrode electrolyte (22) and a negative electrode electrolyte (32) that are used in this energy storage battery have a pH within the range from 2 to 8 (inclusive). An ion exchange membrane, which is obtained by graft-polymerizing styrenesulfonate to a resin film base material that uses an ethylene-vinyl alcohol copolymer as a matrix, is used as a diaphragm (12) of this energy storage battery.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: June 13, 2017
    Assignee: NISSIN ELECTRIC CO., LTD.
    Inventors: Yasuyuki Okumura, Hiroshige Deguchi, Lan Huang, Shosuke Yamanouchi
  • Patent number: 9564660
    Abstract: A laminated electric core for a lithium-ion battery includes a first current collecting substrate; a first electrode active material layer coated or adhered on an inner surface of the first current collecting substrate; a second current collecting substrate; a second electrode active material layer coated or adhered on an inner surface of the second current collecting substrate; a separator sandwiched between the first electrode active material layer and the second electrode active material layer, wherein an electrolyte is retained at least in the separator; and an adhesive layer between the first electrode active material layer and the separator.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: February 7, 2017
    Assignee: QingHong Technology Co., Ltd.
    Inventor: Chun-Lung Huang
  • Publication number: 20150132632
    Abstract: The present disclosure provides a method for manufacturing an electrospun microfiber non-woven web with high strength for a lithium secondary battery, a non-woven web manufactured therefrom, and a separator comprising the non-woven web. More specifically, the present disclosure provides a microfiber non-woven web manufactured by bringing a solution of engineering plastic resin with high heat-resistance into electrospinning, the manufacture thereof, and a separator comprising the web. According to the present disclosure, the engineering plastic resin with high heat-resistance is used in the manufacture of the microfiber non-woven web to provide improved physical properties including tensile strength and good heat-resistance and chemical-resistance, as compared with conventional polyethylene-based separators.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 14, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Won-Pill HWANG, Byeong-Gyu CHO, Young-Deok KIM
  • Publication number: 20150037654
    Abstract: The invention relates to a perforated polymer film with porosity P from 30% to 50% and with an arrangement of perforations which is characterized by the perforation shape, the ratio of the semiaxes of the perforations, the orientation of the perforations, and the regular arrangement of the perforations, where the longitudinal tensile stress that the polymer film withstands without breaking is greater than that for identical porosity and any other arrangement of perforations which differs in at least one feature.
    Type: Application
    Filed: February 11, 2013
    Publication date: February 5, 2015
    Applicant: Evonik Litarion GmbH
    Inventors: Matthias Pascaly, Michael Kube, Ulrich Boes
  • Patent number: 8859142
    Abstract: A non-aqueous electrolyte secondary battery comprising electrodes including a positive electrode and a negative electrode, a separator positioned between the electrodes, and a non-aqueous electrolyte, wherein the electrodes have a collector carrying an active substance material, and the collector of at least one of the positive electrode and the negative electrode is a three-dimensional structure formed of a resin fiber covered with a metal film.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: October 14, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takahiro Matsuyama, Satoshi Okano, Naoto Nishimura
  • Patent number: 8846253
    Abstract: The invention relates to microporous membranes having high meltdown temperature, high air permeability, and high puncture strength. The invention also relates to the production of such membranes and the use of such membranes as battery separator film.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: September 30, 2014
    Assignee: Toray Battery Separator Film Co., Ltd.
    Inventors: Takeshi Ishihara, Satoshi Miyaoka, Koichi Kono, Patrick Brant
  • Patent number: 8841032
    Abstract: The invention relates to microporous membranes having high meltdown temperature, low shutdown temperature, and resistance to heat shrinkage at elevated temperature. The membranes can be produced by stretching a sheet comprising polymethylpentene, polyethylene, and diluent, and then removing the diluent. The membranes can be used as battery separator film in, e.g., lithium ion batteries.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: September 23, 2014
    Assignee: Toray Battery Separator Film Co., Ltd.
    Inventors: Takeshi Ishihara, Satoshi Miyaoka
  • Patent number: 8841031
    Abstract: Disclosed is a porous film comprising: (a) a porous substrate having pores; and (b) a coating layer formed on at least one region selected from the group consisting of a surface of the substrate and a part of the pores present in the substrate, wherein the coating layer comprises styrene-butadiene rubber. An electrochemical device using the porous film as a separator is also disclosed. The porous film is coated with a styrene-butadiene polymer, whose rubbery characteristics can be controlled, and thus provides improved scratch resistance and adhesion to other substrates. When the porous film is used as a separator for an electrochemical device, it is possible to improve the safety of the electrochemical device and to prevent degradation in the quality of the electrochemical device.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: September 23, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Seok Koo Kim, Sang Young Lee, Soon Ho Ahn, Jung Don Suk, Hyun Hang Yong
  • Patent number: 8802271
    Abstract: Provided is a separator for non-aqueous batteries not only having shutdown property but also achieving both higher output and short-circuit resistance. The separator comprising a laminate comprising: a low melting-point polymer fiber layer (A) having a melting point of 100 to 200° C., the low melting-point polymer fiber layer (A) comprising nanofibers having a fiber diameter of 1000 nm or smaller and formed from the low melting-point polymer; and a heat-resistant polymer fiber layer (B) positioned on the low melting-point polymer fiber layer (A) and comprising a high melting-point polymer having a melting point over 200° C. or a heat infusible polymer, the heat-resistant polymer fiber layer (B) comprising a mixture of nanofibers having a fiber diameter of 1000 nm or smaller and non-nanofibers having a fiber diameter over 1000 nm and both formed from heat-resistant polymer.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: August 12, 2014
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomohiro Hayakawa, Hideo Hayashi, Hideki Kamada, Takayoshi Hosoya, Hiroyuki Kawai
  • Patent number: 8802270
    Abstract: The invention relates to a biaxially oriented, multilayer microporous foil including one layer made from propylene homopolymer, a propylene block copolymer, a polyethylene and ?-nucleating agent, and at least one further porous layer.
    Type: Grant
    Filed: December 5, 2009
    Date of Patent: August 12, 2014
    Assignee: Treofan Germany GmbH & Co. KG
    Inventors: Bertram Schmitz, Detlef Busch
  • Patent number: 8795900
    Abstract: Single-layer or multilayer, biaxially oriented, microporous foil having a shut-off function, which comprises propylene homopolymer and propylene block copolymer, polyethylene and ?-nucleating agent.
    Type: Grant
    Filed: December 5, 2009
    Date of Patent: August 5, 2014
    Assignee: Treofan Germany GmbH & Co. KG
    Inventors: Bertram Schmitz, Detlef Busch
  • Patent number: 8758926
    Abstract: Provided is a separator for an electrochemical device including a plate-like porous substrate, and a porous thin-film coating layer formed on at least one surface of the plate-like porous substrate and containing crosslinked polyester. The crosslinked polyester coating layer hardly affects the air permeability of the separator. Also, the crosslinked polyester coating layer has good hydrophilicity and wettability to an electrolyte, and thus improves the performance of the battery. Also, the crosslinked polyester coating layer has excellent resistance to heat and deformation, and thus prevents the thermal shrinkage of the separator.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: June 24, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Jeong-Man Son, Yoon-Jung Bae
  • Patent number: 8715862
    Abstract: A lithium secondary battery includes a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material, a separator separating the positive electrode from the negative electrode, and an electrolyte. The negative electrode active material includes a graphite core particle, at least one metal particle located on the graphite core particle, and a polymer film coating the graphite core particle and the at least one metal particle. The polymer includes a polyimide- or polyacrylate-based polymer.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: May 6, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Cheol-Hee Hwang, Bong-Chull Kim, Jong-Chan Kim, Se-Ho Park, Na-Rae Won
  • Publication number: 20140106235
    Abstract: Provided is a separator for nonaqueous electrolyte electricity storage devices that includes an improved porous epoxy resin membrane. In the separator for nonaqueous electrolyte electricity storage devices, a ratio I/Io between a peak intensity Io of an absorption peak present at 1240 cm?1 in an infrared absorption spectrum of the porous epoxy resin membrane and a peak intensity I of an absorption peak present at 1240 cm?1 in an infrared absorption spectrum of the porous epoxy resin membrane having been subjected to an acetic anhydride treatment is 1.0 or more and 2.4 or less. The amount of active hydroxyl groups present in the porous epoxy resin membrane can be evaluated by the value of the ratio I/Io.
    Type: Application
    Filed: June 12, 2012
    Publication date: April 17, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yosuke Yamada, Shunsuke Noumi, Hiroyoshi Take
  • Publication number: 20140065515
    Abstract: An electrochemical device having a liquid electrolyte which includes a protic solvent, an anode electrode disposed in contact with the liquid electrolyte, and a cathode electrode disposed in contact with the liquid electrolyte. A membrane which interrupts the transport of ions between the electrodes at a predetermined temperature is disposed in the liquid electrolyte between the anode electrode and the cathode electrode. In this way, electrochemical devices such as batteries, fuel cells, electrolyzers, and sensors, which may overheat during use and cause a fire or explosion, are precluded from overheating.
    Type: Application
    Filed: November 7, 2013
    Publication date: March 6, 2014
    Applicant: Gas Technology Institute
    Inventor: Qinbai FAN
  • Publication number: 20130337336
    Abstract: The present invention provides a method for producing a separator for nonaqueous electrolyte electricity storage devices. The method allows: avoidance of use of a solvent that places a large load on the environment; relatively easy control of parameters such as the porosity and the pore diameter; and a high electrochemical stability of a resultant separator for nonaqueous electrolyte electricity storage devices. The present invention relates to a method for producing a separator for nonaqueous electrolyte electricity storage devices that has a thickness ranging from 5 to 50 ?m.
    Type: Application
    Filed: June 12, 2012
    Publication date: December 19, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Chiharu Yano, Michie Sakamoto, Hiroyoshi Take, Yosuke Yamada, Shunsuke Noumi
  • Publication number: 20130302696
    Abstract: The present invention is a microporous membrane comprising polymethylpentene (a), polyethylene (b), and polypropylene (c), the microporous membrane having a meltdown temperature of 180° C. or higher, a TD heat shrinkage at 170° C. of 35% or less, and a thickness change ratio per thickness of 10% or less. An object of the present invention is to provide a microporous membrane having a high meltdown temperature, a low shutdown temperature, and resistance to heat shrinkage at high temperatures, which cannot be obtained by the prior art.
    Type: Application
    Filed: January 17, 2012
    Publication date: November 14, 2013
    Applicant: TORAY Battery Separator Film Co., Ltd.
    Inventors: Takeshi Ishihara, Koichi Kono
  • Patent number: 8574769
    Abstract: A separator includes a separator body and a first film. The separator body is formed by mixing and solidifying a first material and a second material and then removing the first material by an alkaline liquid etching process. The separator body has a plurality of irregular holes formed corresponding to the removed first material. The first film is disposed on one side of the separator body.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: November 5, 2013
    Assignees: Prologium Technology Co., Ltd., Prologium Holding Inc.
    Inventor: Szu-Nan Yang
  • Publication number: 20130065133
    Abstract: Disclosed is a highly safe battery separator, in particular a separator for a lithium ion secondary battery, which reduces internal resistance, achieves good ionic conductivity, prevents passing of electrode active materials, and also prevents electrical short circuit by controlling deposition of lithium metal (dendrite). Also disclosed is a means for stably producing the battery separator with high productivity. Specifically disclosed are: a battery separator which is composed of a porous polyolefin sheet that is formed from a group of polyolefin nanofilaments that have an average filament diameter of less than 1 ?m and a filament size distribution of 0.2 or less; and a means for producing the battery separator.
    Type: Application
    Filed: April 22, 2011
    Publication date: March 14, 2013
    Applicants: JX NIPPON OIL & ENERGY CORPORATION, UNIVERSITY OF YAMANASHI
    Inventors: Akihiro Suzuki, Takehiro Toyooka, Akira Matsuo, Takeshi Nishizawa, Atsuo Omaru
  • Patent number: 8357260
    Abstract: A partially crosslinked adhesive-supported porous film for battery separator, which in producing a battery, can effectively produce a battery as an electrode/separator laminate in which an electrode and a separator are temporarily bonded to each other without causing mutual slip movement between the electrode and the separator and which after producing a battery, functions itself as a separator having a small heat shrinkage factor even at high temperatures, and a process of producing a battery using such a partially crosslinked adhesive-supported porous film.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: January 22, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Keisuke Kii, Michio Satsuma, Yoshihiro Uetani, Mutsuko Yamaguchi, Yutaka Kishii, Shuuhei Murata, Tomoaki Ichikawa
  • Publication number: 20130017431
    Abstract: This invention relates to separators for batteries and other electrochemical cells, especially lithium-ion batteries, having a shutdown mechanism. The separator comprises a nonwoven nanoweb comprising a coating composed of a plurality of thermoplastic particles having particle size larger than the mean flow pore size of the nanoweb. The coating flows at a desired temperature, and restricts the ion flow path, resulting in a substantial decrease in ionic conductivity of the separator at the desired shutdown temperature, while leaving the separator intact.
    Type: Application
    Filed: January 19, 2012
    Publication date: January 17, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: SIMON FRISK, NATALIA V. LEVIT, PANKAJ ARORA
  • Patent number: 8309256
    Abstract: Provided is a microporous film formed of a thermoplastic resin composition comprising 100 parts by mass of (a) a polyolefin resin and from 5 to 90 parts by mass of (b) a polyphenylene ether resin; the microporous film having a sea-island structure with the polyolefin resin as a sea portion and with the polyphenylene ether resin as an island portion and having a air permeability of from 10 sec/100 cc to 5000 sec/100 cc. The microporous film does not break easily even at high temperatures and has good heat resistance.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: November 13, 2012
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Kentaro Kikuchi, Shunichiro I
  • Patent number: 8221920
    Abstract: A separator for a valve regulated lead-acid battery which comprises a paper sheet where very fine glass fiber is a main component, which has a piercing strength (puncture strength) of 4.5 N/mm or more and a tensile strength of 7.0 N/10 mm2 or more. The paper sheet is made by blending 80 to 90% by weight of glass fiber having 1.5 ?m or less average fiber size, 5 to 10% by weight of single-material monofilament-form thermally non-adhesive organic fiber (non-heat-bondable organic fiber) and 5 to 10% by weight of single-material monofilament-form thermally adhesive organic fiber (heat-bondable organic fiber) comprising the same kind of material as in the thermally non-adhesive organic fiber in a wet papermaking process whereupon the fiber materials are bonded each other by thermal fusion of the thermally adhesive organic fiber whereby a coat (film) by melting of the organic fiber is not substantially formed on the surface of the glass fiber.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: July 17, 2012
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Masahiro Kawachi, Shoji Sugiyama, Takashi Shidomi
  • Publication number: 20120156570
    Abstract: The present invention relates to a microporous polyethylene film for use as battery separator. The microporous polyethylene film according to the present invention is characterized by having a film thickness of 5-40 ?m, a porosity of 35-55%, a permeability from 2.5×10?5 to 10.0 10?5 Darcy, a puncture strength of at least 0.10 N/?m at 90° C., a puncture angle of at least 30° at 90° C., and a permeability from 2.0 10?5 to 8.0 10?5 Darcy after shrinking freely at 120° C. for 1 hour. The microporous polyethylene film in accordance with the present invention has very superior puncture strength and thermal stability at high temperature and takes place of less decrease of permeability due to low thermal shrinkage at high temperature, as well as superior permeability. Therefore, it can be usefully applied in a high-capacity, high-power battery to improve thermal stability and long-term stability of the battery.
    Type: Application
    Filed: February 23, 2012
    Publication date: June 21, 2012
    Applicant: SK Innovation Co., Ltd.
    Inventors: Inhwa Jung, Jang-Weon Rhee, Gwigwon Kang, Youngkeun Lee, Yongkyoung Kim
  • Publication number: 20120129034
    Abstract: A porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, in which the number of branches per 1000 carbon atoms that constitute the main chain of the polyolefin wax is 15 or less; a porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, and which does not substantially contain a component that melts at a temperature of 60° C. or lower; a laminated porous film which comprises one of the porous films and a heat-resistance porous layer laminated on at least one surface of the porous film; and a separator for batteries, which comprises the porous film or the laminated porous film.
    Type: Application
    Filed: August 2, 2010
    Publication date: May 24, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hirohiko Hasegawa, Yasuo Shinohara, Daizaburo Yashiki
  • Publication number: 20120070748
    Abstract: The invention relates to microporous membranes having high meltdown temperature, high air permeability, and high puncture strength. The invention also relates to the production of such membranes and the use of such membranes as battery separator film.
    Type: Application
    Filed: June 8, 2010
    Publication date: March 22, 2012
    Applicant: TORAY TONEN SPECIALTY SEPARATOR GODO KAISHA
    Inventors: Takeshi Ishihara, Satoshi Miyaoka, Koichi Kono, Patrick Brant
  • Publication number: 20120034518
    Abstract: A microporous membrane comprising polyolefin copolymer, the membrane having a shutdown temperature?130.5° C. and a shutdown activation energy E2?3.5×103 J/mol.
    Type: Application
    Filed: March 5, 2010
    Publication date: February 9, 2012
    Applicant: TORAY TONEN SPECIALTY SEPARATOR GODO KAISHA
    Inventors: Takeshi Ishihara, Satoshi Miyaoka, Koichi Kono, Donna J. Crowther, Patrick Brant
  • Publication number: 20120034519
    Abstract: The invention relates to microporous membranes comprising polymer and having well-balanced permeability, shutdown temperature, and pin puncture strength. The invention also relates to methods for making such membranes, and the use of such membranes as battery separator film in, e.g., lithium ion secondary batteries.
    Type: Application
    Filed: March 5, 2010
    Publication date: February 9, 2012
    Applicant: Toray Tonen Speciality Separator Godo Kaisha
    Inventors: Takeshi Ishihara, Satoshi Miyaoka, Koichi Kono, Donna J. Crowther, Patrick Brant
  • Publication number: 20110244336
    Abstract: Single-layer or multilayer, biaxially oriented, microporous foil having a shut-off function, which comprises propylene homopolymer and propylene block copolymer, polyethylene and ?-nucleating agent.
    Type: Application
    Filed: December 5, 2009
    Publication date: October 6, 2011
    Applicant: TREOFAN GERMANY GMBH & CO. KG
    Inventors: Bertram Schmitz, Detlef Busch
  • Patent number: 7981549
    Abstract: The instant invention is a separator for a battery having a zinc electrode. The battery separator according to the instant invention includes a microporous membrane, and a coating on at least one surface of the microporous membrane. The coating includes a mixture of 25-40 weight % polymer and 60-75 weight % surfactant combination. The polymer is cellulose acetate, and the surfactant combination includes a first surfactant and a second surfactant. The first surfactant, preferably, has an active ingredient selected from the group consisting of organic ethers, and the second surfactant is, preferably, an oxirane polymer with 2-ethylhexyl dihydrogen phosphate.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: July 19, 2011
    Assignee: Celgard Inc.
    Inventors: Jill V. Watson, C. Glen Wensley
  • Publication number: 20110027659
    Abstract: Provided is a microporous film formed of a thermoplastic resin composition comprising 100 parts by mass of (a) a polyolefin resin and from 5 to 90 parts by mass of (b) a polyphenylene ether resin; the microporous film having a sea-island structure with the polyolefin resin as a sea portion and with the polyphenylene ether resin as an island portion and having a air permeability of from 10 sec/100 cc to 5000 sec/100 cc. The microporous film does not break easily even at high temperatures and has good heat resistance.
    Type: Application
    Filed: March 24, 2009
    Publication date: February 3, 2011
    Inventors: Kentaro Kikuchi, Shunichiro I.
  • Patent number: 7799465
    Abstract: There is described a fuel cell or electrolytic cell comprising an ion-conductive polymeric material which includes a first repeat unit of formula (I): —(O-Ph1-CO-Ph1-O-Ph1-CO-Ph1)-, and a second repeat unit of formula (II): —(O-Ph2-O-Ph3-CO-Ph4)-, or of formula (III): (O-Ph2-O-Ph3-SO2-Ph4)-; wherein Ph1, Ph2, Ph3 and Ph4 independently represent phenyl moieties and wherein said second repeat unit is provided with ion-exchange sites. The polymeric material may include a third repeat unit which is amorphous.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: September 21, 2010
    Assignee: Victrex Manufacturing Limited
    Inventors: John Neil Devine, Brian Wilson
  • Patent number: 7678489
    Abstract: The present invention provides a separator for fuel cell, which is a molded article including a resin and a conductive filler, wherein a contact angle of water on a surface of the separator for fuel cell is from 20 to 85°, and a process for producing the separator for fuel cell.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: March 16, 2010
    Assignee: Nichias Corporation
    Inventors: Hideyuki Shishitani, Atsushi Murakami
  • Publication number: 20090098465
    Abstract: A microporous membrane having excellent properties which is produced by extruding a combination of a diluent or solvent and a polyolefin resin composition comprising (a) from about 40 to about 60% of a first polyethylene resin having a weight average molecular weight of from about 2.5×105 to about 4×105 and a molecular weight distribution of from about 5 to about 100, (b) from about 20 to about 40% of a first polypropylene resin having a weight average molecular weight of from about 0.8×106 to about 1.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 16, 2009
    Inventors: Shintaro Kikuchi, Kotaro Takita
  • Patent number: 7402360
    Abstract: The invention provides a non-aqueous electrolyte battery characterized in that: an active material of the positive electrode includes lithium manganese oxide; the shut-down temperature of the separator is 162° C. or lower; and the area contraction ratio of the separator at 120° C. is 15% or less.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: July 22, 2008
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Naoki Imachi, Seiji Yoshimura, Shin Fujitani
  • Patent number: 7399555
    Abstract: A non-aqueous electrolyte secondary battery comprising: an electrode plate assembly; a non-aqueous electrolyte; and an outer jacket accommodating the electrode plate assembly and the non-aqueous electrolyte therein, the electrode plate assembly comprising a positive electrode plate, a negative electrode plate and a separator interposed between the positive electrode plate and the negative electrode plate, the separator comprising a polyolefin resin, wherein (1) the separator comprises at least one layer comprising a polypropylene resin, (2) the layer comprising a polypropylene resin contains an antioxidant with a melting point of 60° C. or higher, and (3) the layer comprising a polypropylene resin and the positive electrode are in contact with one another.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: July 15, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Sano, Masaya Sugafuji, Norihiro Yamamoto, Masaki Kitagawa, Kiyomi Kato, Hiroshi Matsuno, Jun Nunome, Yutaka Kawatate
  • Patent number: 7335441
    Abstract: A method of forming an electrochemical cell is disclosed. The method comprises contacting a negative pole layer and a positive pole layer one with the other or with an optional layer interposed therebetween. The pole layers and the optional layer therebetween are selected so as to self-form an interfacial separator layer between the pole layers upon such contacting.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: February 26, 2008
    Assignee: Power Paper Ltd.
    Inventors: Shalom Luski, Ehud Shchori, Zvi Nitzan
  • Patent number: 7318984
    Abstract: An adhesive composition-supporting separator for a battery includes a porous substrate supporting thereon a thermally cross-linkable adhesive composition comprising a multi-functional isocyanate and a reactive polymer having a functional group capable of reacting with an isocyanato group of the multi-functional isocyanate; an electrode/separator laminate is obtained by contact pressing the adhesive composition-supporting separator for a battery against electrodes; and an electrode/separator bonded material having a cross-linked adhesive composition is obtained by heating the electrode/separator laminate to thereby react the multifunctional isocyanate with the reactive polymer for causing cross-linking.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: January 15, 2008
    Assignee: Nitto Denko Corporation
    Inventors: Michio Satsuma, Keisuke Kii, Yoshihiro Uetani, Yutaka Kishii, Mutsuko Yamaguchi, Shuuhei Murata
  • Patent number: 7301002
    Abstract: Improved sulfonated polyphenylene compositions, improved polymer electrolyte membranes and nanocomposites formed there from for use in fuel cells are described herein. The improved compositions, membranes and nanocomposites formed there from overcome limitations of Nafion® membranes.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: November 27, 2007
    Assignee: Sandia Corporation
    Inventors: Christopher J. Cornelius, Cy H. Fujimoto, Michael A. Hickner
  • Patent number: 7022431
    Abstract: A method of forming an electrochemical cell is disclosed. The method comprises contacting a negative pole layer and a positive pole layer one with the other or with an optional layer interposed therebetween. The pole layers and the optional layer therebetween are selected so as to self-form an interfacial separator layer between the pole layers upon such contacting.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: April 4, 2006
    Assignee: Power Paper Ltd.
    Inventors: Ehud Shchori, Shalom Luski
  • Patent number: 6924065
    Abstract: A porous separator for a winding-type lithium secondary battery having a gel-type polymer electrolyte includes a matrix made of polyvinyl chloride, or a matrix made of mixtures of polyvinylchloride and at least one polymer selected from the group consisting of polyvinylidenefluoride, a vinylidenefluoride/hexafluoropropylene copolymer, polymethacrylate, polyacrylonitrileand polyethyleneoxide.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: August 2, 2005
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Hyeong-gon Noh
  • Patent number: 6905798
    Abstract: The present invention provide a separator for an electrochemical device which comprises a wet nonwoven fabric comprising one or more kinds of fibrillated organic fibers which are at least partially fibrillated into a fiber diameter of 1 ?m or less, and one or more kinds of unfibrillated organic fibers having a fineness of 0.5 dtex or less, which exhibits excellent heat resistance, electrolyte holding properties, internal short-circuit preventing property, and winding property, which results in a lowered internal resistance and prolonged life of an electrochemical device, and a method for producing the same and an electrochemical device.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: June 14, 2005
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Takahiro Tsukuda, Masatoshi Midorikawa, Mitsuo Yoshida, Toshihiro Shigematsu, Kazuchiyo Takaoka, Kenji Hyodo
  • Publication number: 20040258999
    Abstract: There is described a fuel cell or electrolytic cell comprising an ion-conductive polymeric material which includes a first repeat unit of formula (I): —(O-Ph1-CO-Ph1-O-Ph1-CO-Ph1)-, and a second repeat unit of formula (II): —(O-Ph2-O-Ph3-CO-Ph4)-, or of formula (III): (O-Ph2-O-Ph3-SO2-Ph4)-; wherein Ph1, Ph2, Ph3 and Ph4 independently represent phenyl moieties and wherein said second repeat unit is provided with ion-exchange sites. The polymeric material may include a third repeat unit which is amorphous.
    Type: Application
    Filed: April 28, 2004
    Publication date: December 23, 2004
    Inventors: John Neil Devine, Brian Wilson
  • Publication number: 20040229116
    Abstract: An electrochemical cell is presented having an improved separator disposed at the interface of the anode and cathode. In particular, the separator includes one or more windings of perforated fabric. A conformal separator coating is applied to the fabric and those portions of the cathode that are radially aligned with the apertures. The conformal separator may be formed from combinations of certain polymers and inorganic crosslinking agents.
    Type: Application
    Filed: January 2, 2004
    Publication date: November 18, 2004
    Inventors: James Andrew Malinski, Chris Alan Garber, William C. Bushong, Gregory S. Moy
  • Patent number: 6815111
    Abstract: In a separator for a fuel cell and a method of producing a separator for a fuel cell according to the invention, bond-carbon is used in which composition ratios are set to 85 to 97 wt. % (preferably, 91 to 96 wt. %) of graphite powder having an average diameter in a range of 15 to 125 &mgr;m (preferably, 40 to 100 &mgr;m), and 3 to 15 wt. % (preferably, 4 to 9 wt. %) of a thermosetting resin. The compound is previously cold-molded into a shape similar to a final molded shape. The preliminary molded member is then placed in a mold, and a molding pressure in a range of 10 to 100 MPa (preferably, 20 to 50 MPa) is applied, thereby molding the member into a separator of the final shape. Therefore, a separator which is uniform and has a predetermined shape can be surely obtained while reducing the volume resistivity so as to ensure a good conductivity, whereby the performance of a fuel cell can be improved.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: November 9, 2004
    Assignee: Nippon Pillar Packing Co., Ltd.
    Inventor: Tsunemori Yoshida
  • Patent number: 6811928
    Abstract: Conventional batteries are disadvantageous in that a firm outer case must be used to maintain an electrical connection between electrodes, which has been an obstacle to size reduction. Those in which each electrode and a separator are joined with an adhesive resin suffer from conflict between adhesive strength and battery characteristics, particularly ion conductivity and internal resistivity. To solve these problems, it is an object of the invention to reduce resistance between electrodes, i.e., internal resistance of a battery to improve battery characteristics while securing both insulation function against electron conduction and ion conductivity between electrodes and also to maintain adhesive strength enough to firmly join the electrodes thereby to provide a light, compact and thin battery. The internal resistivity can be diminished by joining a positive electrode and a negative electrode with an adhesive resin layer having at least one adhesive resin layer containing a filler.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: November 2, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigeru Aihara, Daigo Takemura, Hisashi Shiota, Jun Aragane, Hiroaki Urushibata, Yasuhiro Yoshida, Kouji Hamano, Michio Murai, Takayuki Inuzuka
  • Patent number: 6794078
    Abstract: A fuel-cell separator comprising a resin and an electric conductor dispersed in the resin is produced by thermally molding a mixture comprising the electric conductor and the resin.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: September 21, 2004
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Noriji Tashiro, Atsushi Fujita, Tomonori Seki, Harufumi Hasuda
  • Patent number: 6777136
    Abstract: In order to improve a storage stability at high temperatures of a lithium polymer battery including: a positive electrode comprising a lithium-containing complex oxide; a negative electrode comprising a material capable of absorbing and desorbing a lithium ion; and a separator comprising a liquid organic electrolyte and a host polymer retaining the liquid organic electrolyte, the separator is rendered homogeneous and excellent in the affinity with the organic electrolyte by using a crosslinked copolymer having a main-chain comprising a vinylidene fluoride unit and a side-chain comprising an alkylene oxide unit and at least one of an acrylate unit and methacrylate unit as the host polymer.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: August 17, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenichi Morigaki, Norishige Nanai, Yasuyuki Shibano