Organic Material Patents (Class 429/249)
  • Patent number: 10243187
    Abstract: A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: March 26, 2019
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Roy Martinus Adrianus l'Abee, Richard Peters, Erich Otto Teutsch, Huiqing Wu, Yanju Wang, Qunjian Huang, Wujun Rong, Jacob Scott LaBelle
  • Patent number: 10205148
    Abstract: A rechargeable lithium battery includes an electrode assembly including a positive electrode including a positive current collector, a first separator on the positive electrode, a negative electrode including a negative current collector on the first separator, and a second separator on the negative electrode. The positive current collector and the negative current collector each have respective uncoated regions at two sides thereof. The first separator includes a first substrate including a polyolefin-based resin particle, and a coating layer on a side of the first substrate the coating layer being an inorganic layer or an organic layer. The second separator includes a second substrate including a polyolefin-based resin particle, and an outermost region and/or a central region of the electrode assembly includes one of the uncoated regions of the positive current collector, the first separator, one of the uncoated regions of the negative current collector and the second separator.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: February 12, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Cheon-Soo Kim, Kyeong-Min Jeong
  • Patent number: 10158110
    Abstract: In an aspect, the invention provides separator systems for electrochemical systems providing electronic, mechanical and chemical properties useful for a range of electrochemical storage and conversion applications. Separator systems of some embodiments, for example, provide structural, physical and electrostatic attributes useful for managing and controlling dendrite formation in lithium and zinc based batteries. In an embodiment, for example, separator systems of the invention have a multilayer, porous geometry supporting excellent ion transport properties while at the same time providing a barrier effective to prevent dendrite initiated mechanical failure, shorting and/or thermal runaway.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: December 18, 2018
    Assignee: California Institute of Technology
    Inventor: Farshid Roumi
  • Patent number: 10059085
    Abstract: A roll is made of a porous film in a belt-like shape, the porous film having a width of not smaller than 20 mm. In a case where a roughness along a width direction of an outermost surface of the roll is measured at 1 mm intervals across an entire width of the outermost surface, a difference between a maximum roughness value and a minimum roughness value in a distance of 20 mm in the width direction of the outermost surface is less than 25 ?m.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: August 28, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takahiro Okugawa, Yutaka Suzuki, Tomoaki Ozeki, Chikara Murakami
  • Patent number: 10056595
    Abstract: A battery separator includes a porous membrane A including a polyolefin resin, and a porous membrane B laminated thereon including a fluororesin and inorganic particles or cross-linked polymer particles, wherein the particles are contained in an amount of 80 wt % to 97 wt % of the porous membrane B and have an average diameter being not less than 1.5 times and less than 50 times the average pore size of the porous membrane A, and a specific expression 1 and a specific expression 2 are satisfied.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: August 21, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Naoki Mizuno, Michihiko Irie, Ken Shimizu
  • Patent number: 10050313
    Abstract: A lithium ion battery includes a positive and a negative electrode, and a nanoporous or microporous polymer separator soaked in electrolyte solution and disposed between the electrodes. At least two different chelating agents are included and selected to complex with: i) two or more different transition metal ions; ii) a transition metal ion in two or more different oxidation states; or iii) both i) and ii). The at least two different selected chelating agents are to complex with transition metal ions in a manner sufficient to not affect movement of lithium ions across the separator during operation of the battery. The chelating agents are: dissolved or dispersed in the electrolyte solution; grafted onto the polymer of the separator; attached to the binder material of the negative and/or positive electrode; disposed within pores of the separator; coated on a surface of the separator; and/or coated on a surface of an electrode.
    Type: Grant
    Filed: June 19, 2016
    Date of Patent: August 14, 2018
    Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, BAR-ILAN UNIVERSITY
    Inventors: Shalom Luski, Doron Aurbach, Bob R. Powell, Jr., Ion C. Halalay, Timothy J. Fuller, Anjan Banerjee, Baruch Ziv, Yuliya Shilina
  • Patent number: 10002719
    Abstract: The present disclosure provides a separator comprising a porous substrate, a porous coating layer and a binder layer, the binder comprising at least one homopolymer of polyvinylidene fluoride and at least one copolymer of polyvinylidene fluoride (PVDF)-co-hexafluoropropylene (HFP) so that a content difference of hexafluoropropylene (HFP) present in the two compounds is about 3 wt % or higher.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: June 19, 2018
    Assignees: LG Chem, Ltd., TORAY INDUSTRIES, INC.
    Inventors: Jeong-Min Ha, Su-Jin Yoon, Jong-Hun Kim, Byoung-Jin Shin, Joo-Sung Lee, Jin-Woo Kim, Da-Kyung Han
  • Patent number: 9960454
    Abstract: Examples of the present technology may include a method of making a non-woven fiber mat. The wet nonwoven fiber mat may include a first plurality of first glass fibers and a second plurality of second glass fibers. The first plurality of first glass fibers may have nominal diameters of less than 5 ?m, and the second plurality of second glass fibers may have nominal diameters of greater than 6 ?m. The method may further include curing the binder composition to produce the nonwoven fiber mat. The nonwoven fiber mat may have an average 40 wt. % sulfuric acid wick height of between about 1 cm and about 5 cm after exposure to 40 wt. % sulfuric acid for 10 minutes conducted according to method ISO8787, and the nonwoven fiber mat may have a total normalized tensile strength greater than 2 (lbf/in)/(lb/sq) fora sq (100 ft2).
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: May 1, 2018
    Assignee: Johns Manville
    Inventors: Zhihua Guo, Souvik Nandi, Jawed Asrar, Albert G Dietz, III
  • Patent number: 9954211
    Abstract: A separator includes a porous substrate, a porous organic-inorganic coating layer formed on at least one surface of the porous substrate, and an organic coating layer formed on the surface of the organic-inorganic coating layer. The porous organic-inorganic coating layer includes a mixture of inorganic particles and a first binder polymer. The first binder polymer contains a copolymer including (a) a first monomer unit including either at least one amine group or at least one amide group or both in the side chain thereof and (b) a (meth)acrylate having a C1-C14 alkyl group as a second monomer unit. The organic coating layer is formed by dispersing a second binder polymer on the surface of the organic-inorganic coating layer, leaving scattered uncoated areas. The porous organic-inorganic coating layer of the separator has a high packing density, enabling the fabrication of a thin battery in an easy manner without losing stability.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: April 24, 2018
    Assignees: LG CHEM, LTD., TORAY INDUSTRIES, INC
    Inventors: Jeong-Min Ha, No-Ma Kim, Byeong-Gyu Cho, Kee-Young Kim, Sun-Mi Jin
  • Patent number: 9905825
    Abstract: Provided is a separator for a nonaqueous electrolyte battery, including a porous substrate and an adhesive porous layer that is provided on one side or both sides of the porous substrate and contains an adhesive resin. The ratio of the standard deviation of the areal weight of the adhesive porous layer to the mean of the areal weight of the adhesive porous layer (g/m2) (standard deviation/mean) is 0.3 or less.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: February 27, 2018
    Assignee: TEIJIN LIMITED
    Inventors: Satoshi Nishikawa, Takashi Yoshitomi
  • Patent number: 9882189
    Abstract: Provided is a separator for a nonaqueous electrolyte battery, which includes a porous substrate and an adhesive porous layer that is provided on at least one side of the porous substrate and contains an adhesive resin. The separator has a pore size distribution such that, as measured by a pore size distribution measurement test, the pore size at the maximum value of the maximum peak is within a range of 0.02 ?m to 0.1 ?m, and the pore size distribution range value ? defined as follows is 0.4 or less. The pore size distribution range value ? herein is a value calculated by the following equation from pore sizes D90, D10, and D50 corresponding to cumulative pore size distributions of 90%, 10%, and 50%, respectively: pore size distribution range value ?=(D90?D10 )/D50.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: January 30, 2018
    Assignee: TEIJIN LIMITED
    Inventors: Ayumi Iwai, Satoshi Nishikawa, Takashi Yoshitomi
  • Patent number: 9728756
    Abstract: Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: August 8, 2017
    Assignee: Hollingsworth & Vose Company
    Inventors: Akshay Ashirgade, Zhiping Jiang
  • Patent number: 9716293
    Abstract: Examples of the present technology may include a method of making a non-woven fiber mat. The wet nonwoven fiber mat may include a first plurality of first glass fibers and a second plurality of second glass fibers. The first plurality of first glass fibers may have nominal diameters of less than 5 ?m, and the second plurality of second glass fibers may have nominal diameters of greater than 6 ?m. The method may further include curing the binder composition to produce the nonwoven fiber mat. The nonwoven fiber mat may have an average 40 wt. % sulfuric acid wick height of between about 1 cm and about 5 cm after exposure to 40 wt. % sulfuric acid for 10 minutes conducted according to method ISO8787, and the nonwoven fiber mat may have a total normalized tensile strength greater than 2 (lbf/in)/(lb/sq) for a sq (100 ft2).
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: July 25, 2017
    Assignee: Johns Manville
    Inventors: Zhihua Guo, Souvik Nandi, Jawed Asrar, Albert G Dietz, III
  • Patent number: 9666849
    Abstract: A separator may include (A) a porous substrate having pores, and (B) a porous coating layer formed on at least one surface of the porous substrate and made from a mixture of inorganic particles and a binder polymer, and the binder polymer may contain a copolymer of (a) a first monomer unit with at least one of an amine group and an amide group at a side chain, and (b) a second monomer unit of (meth)acrylate with an alkyl group having 1 to 14 carbon atoms. The porous coating layer of the separator may have a high packing density, thereby easily forming a thin film battery without hindering safety, and may have good adhesive strength with the porous substrate, thereby preventing detachment of the inorganic particles in the porous coating layer during assembly of an electrochemical device.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: May 30, 2017
    Assignees: LG Chem, Ltd., Toray Battery Separator Film Co., Ltd.
    Inventors: Jeong-Min Ha, Kee-Young Kim, Byeong-Gyu Cho, Sun-Mi Jin, No-Ma Kim, Jong-Hun Kim, Byoung-Jin Shin
  • Patent number: 9660238
    Abstract: A secondary battery porous membrane, manufactured by a slurry for secondary battery porous membrane, which is superior in coating priority and dispersibility of non-conductive organic particles, which improves cycle characteristic of the obtained secondary battery, which has high flexibility and can prevent powder falls, and which has less content of moisture amount; and non-conductive organic particles, which can be suitably used as a secondary battery porous membrane and has less content of metallic foreign particles. The slurry for secondary battery porous membrane comprises; a binder including a polymerized unit of vinyl monomer having a hydrophilic acid group, a non-conductive organic particle having a functional group, cross-linkable with the hydrophilic acid group and a solvent.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: May 23, 2017
    Assignee: Zeon Corporation
    Inventors: Taku Matsumura, Takuya Kaneda, Yasuhiro Wakizaka
  • Patent number: 9627668
    Abstract: Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: April 18, 2017
    Assignee: Hollingsworth & Vose Company
    Inventors: Akshay Ashirgade, Zhiping Jiang
  • Patent number: 9525169
    Abstract: A nickel-hydrogen storage battery includes a positive electrode, a negative electrode using an AB5 based hydrogen-absorbing alloy, and a separator arranged between the positive and negative electrodes. The AB5 based hydrogen-absorbing alloy includes an A element, which is a constituent element of a misch metal, and a B element, which includes nickel and cobalt. The ratio of the amount of substance of the B element to that of the A element is 5.2 or more and 5.4 or less. The ratio of the amount of substance of cobalt to that of the A element is 0.15 or more and 0.4 or less. The liquid retention volume (V1) and the true volume (V2) of the separator, the theoretical capacity of the negative electrode (C1), and the theoretical capacity of the positive electrode (C2) satisfy the following expression. 2.0?V1/V2×C1/C2?3.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: December 20, 2016
    Assignee: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Shinichiro Ito, Yuki Sakito, Hiroyuki Sakamoto, Katsumi Kashiwagi
  • Patent number: 9512307
    Abstract: A polymer composition has homogenous dispersion of a first polymer with a second polymer. The first polymer includes but is not limited to ethylene based homopolymer and ethylene based copolymer. The second polymer has molecular weight higher than the molecular weight of the first polymer and heat of fusion greater than 200 J/g.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: December 6, 2016
    Assignee: Reliance Industries Limited
    Inventors: Ajit Behari Mathur, Satya Srinivasa Rao Gandham, Uma Sankar Satpathy, Krishna Renganath Sarma, Vijay Shivaji Kadam, Raksh Vir Jasra
  • Patent number: 9431641
    Abstract: An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to an electrode. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer formed on at least one side of the porous substrate and containing a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the polyvinylidene-fluoride-based resin has a weight average molecular weight of 600,000 to 3,000,000.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: August 30, 2016
    Assignee: TEIJIN LIMITED
    Inventor: Satoshi Nishikawa
  • Patent number: 9419259
    Abstract: The invention relates to a battery assembly with high thermal conductivity. The battery assembly comprises a metal case having a hollow accommodation cavity formed therein, a plurality of battery cells installed parallel to one another within the metal case, and a common electrode for connection to the other electrode in each of the battery cells. Each of the battery cells has two electrodes, with one of the electrodes that corresponds to those of the rest of the battery cells being connected in a thermally conductive manner to the metal case. The invention takes advantage of high thermal conductivity of metallic material and dissipates heat by connecting the metal case to the battery electrodes. The invention further comprises fixation troughs formed on the metal case, thereby reducing the size of the assembly.
    Type: Grant
    Filed: April 22, 2012
    Date of Patent: August 16, 2016
    Assignee: Atieva, Inc.
    Inventors: Chia-Ming Chuang, David YuanJei Tse
  • Patent number: 9401505
    Abstract: A polyolefin porous separator includes a polyolefin porous base film, and a coating layer formed on one or both sides of the base film. The coating layer includes inorganic particles. The inorganic particles include first inorganic particles having an average particle size ranging from 150 nm to 600 nm, and second inorganic particles having an average particle size ranging from 5 nm to 90 nm. The separator has a thermal conductivity of 0.3 W/m·K or more.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: July 26, 2016
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Ki Chul Hong, Myung Kook Park, Jae Goo Doh, Jun Ho Chung, Geon Ja Lim
  • Patent number: 9281508
    Abstract: An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to electrodes. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a crystal size of 1 to 13 nm.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: March 8, 2016
    Assignee: TEIJIN LIMITED
    Inventor: Satoshi Nishikawa
  • Patent number: 9269938
    Abstract: An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to an electrode. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer formed on at least one side of the porous substrate and containing a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a crystallinity of 20 to 35%.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: February 23, 2016
    Assignee: TEIJIN LIMITED
    Inventor: Satoshi Nishikawa
  • Patent number: 9203110
    Abstract: A polymer battery is provided with a positive electrode active material layer, a negative electrode active material layer placed in opposition to the positive electrode active material layer, a polymer electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer, and a distance defining member included in the polymer electrolyte layer to define a distance between the positive electrode active material layer and the negative electrode active material layer.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: December 1, 2015
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Tatsuhiro Fukuzawa, Kouichi Nemoto
  • Patent number: 9077038
    Abstract: A lithium ion battery includes a positive electrode, a negative electrode, and a microporous polymer separator soaked in an electrolyte solution. The microporous polymer separator is disposed between the positive electrode and the negative electrode. An ion exchange polymer material is any of i) incorporated as a binder in any of the positive electrode or the negative electrode, ii) deposited onto a surface of any of the positive electrode or the negative electrode, iii) incorporated into the microporous polymer separator, or iv) deposited onto a surface of the microporous polymer separator. Examples of methods for making the ion exchange polymer material for use in the lithium ion batteries are also disclosed herein.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: July 7, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Ion C. Halalay, Timothy J. Fuller, Lijun Zou, Thomas C. Jackson
  • Patent number: 9065119
    Abstract: An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes, is capable of ensuring sufficient ion permeability even after attachment to electrodes, and further includes an adhesive porous layer having dynamic physical properties sufficient to withstand heat pressing and a uniform porous structure. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a porosity of 30 to 60% and an average pore size of 1 to 100 nm.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: June 23, 2015
    Assignee: TEIJIN LIMITED
    Inventor: Satoshi Nishikawa
  • Patent number: 9023534
    Abstract: The present invention provides a fiber having a nano-order fiber diameter, which is produced by without a process of dehydration and cyclization by a heat treatment after fiber spinning and has excellent heat resistance and mechanical strength, and a non-woven fabric composed of the fiber, and discloses the polyamide-imide fiber and the non-woven fabric having an average fiber diameter of from 0.001 ?m to 1 ?m and also discloses the process for producing threrof. The present invention also provides a separator for an electronic component which has a high conductivity and a small separator thickness and is improved in safety during reflow soldering or short-circuiting, and discloses the separator composed of a non-woven fabric obtained by an electro-spinning method.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: May 5, 2015
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masahiko Nakamori, Yasuo Ohta, Hisato Kobayashi, Syoji Oda, Nobuyuki Taniguchi, Daisuke Sakura, Katsuya Shimeno
  • Publication number: 20150118540
    Abstract: A separator according to the present disclosure is a separator for a non-aqueous electrolyte secondary battery that includes a porous layer that contains cellulose fibers and resin particles. The ratio of the amount of the resin particles to the total amount of the cellulose fibers and the resin particles increases with decreasing distance from one surface of the porous layer.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 30, 2015
    Inventors: ISAO FUJIWARA, NOBUHIRO HIRANO, MASARU WATANABE
  • Patent number: 9017878
    Abstract: Disclosed is an electrode whose surface includes an organic/inorganic composite porous coating layer comprising heat-absorbing inorganic particles and a binder polymer, wherein the heat-absorbing inorganic particle is at least one particle selected from the group consisting of antimony-containing compounds, metal hydroxides, guanidine-based compounds, boron-containing compounds and zinc tartrate compounds. A separator using the heat-absorbing inorganic particles as a component for forming or coating the separator, and an electrochemical device including the electrode and/or the separator are also disclosed. The separator using the heat-absorbing inorganic particles as a component for forming or coating the separator can ensure excellent thermal safety and minimizes degradation of the quality of a battery.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: April 28, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Seok-Koo Kim, Hyun-Min Jang, Sang-Young Lee, Jang-Hyuk Hong
  • Patent number: 9012058
    Abstract: Disclosed is a lithium secondary battery. The lithium secondary battery includes a cathode, an anode, a separator and a non-aqueous electrolyte solution. The separator includes a porous substrate, and a coating layer coated on at least one surface of the porous substrate and including a mixture of inorganic particles and a binder polymer. The non-aqueous electrolyte solution contains an ionizable lithium salt, an organic solvent, and a dinitrile compound having a specific structure. The lithium secondary battery is very safe without side reactions of the electrolyte solution. Therefore, the lithium secondary battery exhibits excellent cycle life and output performance characteristics.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: April 21, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Jong-Ho Jeon, Doo-Kyung Yang, Sung-Hoon Yu, Min-Hyung Lee
  • Publication number: 20150099168
    Abstract: According to one embodiment, a separator for a lead-acid battery includes a membrane film of an ultra-high molecular weight polymer material (UHMWPE). Precipitated silica and glass fibers are disposed throughout the membrane film and held or maintained in position by the UHMWPE. The separator may have a thickness of between 1 and 50 mils and include between 10% and 30% by weight of the UHMWPE, between 40% and 80% by weight of the precipitated silica, between 5% and 25% by weight of processing oils, and between 1% and 30% by weight of the glass fibers.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Applicant: JOHNS MANVILLE
    Inventors: Zhihua Guo, Guodong Zheng, Souvik Nandi, Jawed Asrar
  • Publication number: 20150093638
    Abstract: A non-aqueous electrolyte secondary battery includes an electrode assembly including a positive electrode including a positive electrode active material layer, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein at least one of the positive electrode and the separator contains a phosphoric acid ester compound containing at least one metal element and represented by a general formula (1) (where X and Y each represent a metal element, a hydrogen atom, or an organic group; at least one of X and Y represents a metal element; when the metal element is divalent, X and Y together represent a single metal element; and n represents an integer of 2 or more and 10 or less).
    Type: Application
    Filed: September 4, 2014
    Publication date: April 2, 2015
    Inventors: TOMOKI SHIOZAKI, YASUNARI SUGITA, KAZUKI ENDO, MIYUKI NAKAI
  • Publication number: 20150093626
    Abstract: A lithium ion battery separator includes a porous film of a polymeric chelating agent. The polymeric chelating agent includes a poly(undecylenyl-macrocycle), where the macrocycle is a chelating agent. A positive electrode includes a structure and a coating formed on a surface of the structure. The structure includes a lithium transition metal based active material, a binder, and a conductive carbon; and the coating includes a poly(undecylenyl-macrocycle), where the macrocycle is a chelating agent. The separator and/or positive electrode are suitable for use in a lithium ion battery.
    Type: Application
    Filed: September 22, 2014
    Publication date: April 2, 2015
    Inventors: Timothy J. Fuller, Ion C. Halalay, James Mitchell, Lijun Zou
  • Patent number: 8993646
    Abstract: A porous polymer separator for use in a lithium ion battery is formed by a temperature-induced phase separation method. The porous polymer separator includes a polymer matrix having opposed major faces and a network of pore openings that extends between the major faces and permits intrusion of a lithium-ion conducting electrolyte solution. As part of the temperature-induced phase separation method, a single phase polymer solution that includes a polymer material dissolved in a miscible mixture of a real polymer solvent and a polymer non-solvent is prepared at an elevated temperature above room temperature. A film is then formed from the single phase polymer solution and cooled to phase-separate the polymer material into a solid polymer precipitate. Additional polymer non-solvent is then used to remove the real polymer solvent from the solid polymer precipitate followed by drying.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 31, 2015
    Assignee: GM Global Technology Operations LLC
    Inventor: Xiaosong Huang
  • Patent number: 8993178
    Abstract: A magnesium battery (10) is constituted of a negative electrode (1), a positive electrode (2) and an electrolyte (3). The negative electrode (1) is formed of metallic magnesium and can also be formed of an alloy. The positive electrode (2) is composed of a positive electrode active material, for example, a metal oxide, graphite fluoride ((CF)n) or the like, etc. The electrolytic solution (3) is, for example, a magnesium ion-containing nonaqueous electrolytic solution prepared by dissolving magnesium(II) chloride (MgCl2) and dimethylaluminum chloride ((CH3)2AlCl) in tetrahydrofuran (THF). In the case of dissolving and depositing magnesium by using this electrolytic solution, the following reaction proceeds in the normal direction or reverse direction.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: March 31, 2015
    Assignee: Sony Corporation
    Inventors: Yuri Nakayama, Kenta Yamamoto, Yoshihiro Kudo, Hideki Oki
  • Patent number: 8993174
    Abstract: Disclosed is an integrated electrode assembly having a structure in which a cathode, an anode, and a separation layer disposed between the cathode and the anode are integrated with one another, wherein the separation layer has a multilayer structure including at least one two-phase electrolyte including a liquid phase component and a polymer matrix and at least one three-phase electrolyte including a liquid phase component, a solid component, and a polymer matrix, wherein the polymer matrices of the separation layer are coupled to the cathode or the anode and the liquid phase components of the separation layer are partially introduced into an electrode in a process of manufacturing the electrode assembly.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: March 31, 2015
    Assignee: LG Chem, Ltd.
    Inventors: YoHan Kwon, Sung-Kyun Chang, Seung-tae Hong, Je Young Kim, SungJin Kim
  • Publication number: 20150079479
    Abstract: Provided are a separator for a nonaqueous cell that has air permeability and is small in thickness while maintaining strength properties; and a nonaqueous cell having this separator. The separator includes a fiber sheet in which a polyvinyl alcohol fiber is incorporated in a proportion of 30% or more by mass (based on the fiber sheet). The fiber has a fiber breaking temperature in heated water of lower than 100° C. and higher than 85° C.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Applicant: KURARAY CO., LTD.
    Inventors: Tomohiro HAYAKAWA, Hiroyuki KAWAI, Hideo HAYASHI, Koichi KAMBE
  • Publication number: 20150072242
    Abstract: Provided is a polyolefin separator/inlay interposed between the positive and negative electrodes of a battery, with the separator/inlay having channels that exist in at least two planes. In one embodiment, the separator inlay is comprised of a polyolefin.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 12, 2015
    Applicant: ENCELL TECHNOLOGY, INC.
    Inventor: Randy Gene OGG
  • Publication number: 20150072212
    Abstract: The separator of a nonaqueous electrolyte secondary battery is characterized by having a composite nanofiber fiber which is a nanosize fiber that contains two or more kinds of aqueous resins whose melting points are different.
    Type: Application
    Filed: January 25, 2013
    Publication date: March 12, 2015
    Inventors: Masateru Mikami, Toshifumi Nagino, Takao Kuromiya
  • Publication number: 20150072243
    Abstract: Provided is a polymeric separator/inlay interposed between the positive and negative electrodes of a battery, with the separator/inlay having channels that exist in at least two planes. In one embodiment, the separator inlay is comprised of a polyester, polyamide, polyvinyl chloride or fluorocarbon polymer.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 12, 2015
    Applicant: ENCELL TECHNOLOGY, INC.
    Inventor: Randy Gene OGG
  • Patent number: 8951677
    Abstract: The present invention relates to microporous membranes comprising polymer and having well-balanced permeability and heat shrinkage, especially heat shrinkage at elevated temperature. 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: Grant
    Filed: June 8, 2010
    Date of Patent: February 10, 2015
    Assignee: Toray Battery Separator Film Co., Ltd.
    Inventors: Takeshi Ishihara, Satoshi Miyaoka, Koichi Kono, Patrick Brant
  • 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: 8945737
    Abstract: The present invention relates to the application of a force to enhance the performance of an electrochemical cell. The force may comprise, in some instances, an anisotropic force with a component normal to an active surface of the anode of the electrochemical cell. In the embodiments described herein, electrochemical cells (e.g., rechargeable batteries) may undergo a charge/discharge cycle involving deposition of metal (e.g., lithium metal) on a surface of the anode upon charging and reaction of the metal on the anode surface, wherein the metal diffuses from the anode surface, upon discharging. The uniformity with which the metal is deposited on the anode may affect cell performance. For example, when lithium metal is redeposited on an anode, it may, in some cases, deposit unevenly forming a rough surface. The roughened surface may increase the amount of lithium metal available for undesired chemical reactions which may result in decreased cycling lifetime and/or poor cell performance.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: February 3, 2015
    Assignee: Sion Power Corporation
    Inventors: Chariclea Scordilis-Kelley, John D. Affinito, Lowell D. Jones, Yuriy V. Mikhaylik, Igor Kovalev, William F. Wilkening, Christopher T. S. Campbell, John A. Martens
  • Patent number: 8927149
    Abstract: There is provided a negative electrode for a lithium-ion secondary battery, including a conductive substrate, a negative electrode active material layer containing a negative electrode active material capable of absorbing and desorbing lithium ions and a conductive member having a lower elastic modulus than that of the conductive substrate, wherein at least part of the negative electrode active material is connected to the conductive substrate via the conductive member. There is also provided a lithium-ion secondary battery with such a negative electrode.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: January 6, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Ohara, Hiroaki Tanizaki, Norikazu Mineo
  • Patent number: 8927133
    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: Grant
    Filed: November 7, 2013
    Date of Patent: January 6, 2015
    Assignee: Gas Technology Institute
    Inventor: Qinbai Fan
  • Patent number: 8920971
    Abstract: A composite material in the form of a continuous structure comprises an intrinsically conducting polymer (ICP) layer coated on a substrate, the composite material having a surface area of at least 0.1 m2/g, at least 1 m2/g, or at least 5 m2/g. Methods of manufacturing the composite material comprise coating the substrate with a layer of the intrinsically conducting polymer. Electrochemical or electrical devices comprise at least one component formed of the composite material.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: December 30, 2014
    Inventors: Maria Strömme, Leif Nyholm, Albert Mihranyan
  • Patent number: 8916644
    Abstract: [Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and strength. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component an ultra-high-molecular-weight propylene homopolymer (A) that satisfies the following requirements (1) to (4): (1) the intrinsic viscosity [?] is 7 dl/g or more and less than 25 dl/g; (2) the mesopentad fraction ranges from 90.0% to 99.5%; (3) the melting point ranges from 153° C. to 167° C.; and (4) in an elution temperature-elution volume curve measured by temperature-rising elution fractionation (TREF), the maximum peak has a peak top temperature in the range of 116° C. to 125° C. and a half-width of 7.0° C. or less.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: December 23, 2014
    Assignees: Toray Battery Separator Film Co., Ltd, Prime Polymer Co., Ltd.
    Inventors: Satoshi Tamura, Ryoichi Tsunori
  • Patent number: 8901240
    Abstract: [Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and low thermal shrinkage ratio. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component a propylene homopolymer (A) that satisfies the following requirements (1) to (4) and (7): (1) the intrinsic viscosity [?] is 1 dl/g or more and less than 7 dl/g; (2) the mesopentad fraction ranges from 94.0% to 99.5%; (3) the integral elution volume during heating to 100° C. is 10% or less; (4) the melting point ranges from 153° C. to 167° C.; and (7) in an elution temperature-elution volume curve, the maximum peak has a peak top temperature in the range of 105° C. to 130° C. and a half-width of 7.0° C. or less.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: December 2, 2014
    Assignees: Mitsui Chemicals Inc., Prime Polymer Co., Ltd.
    Inventors: Satoshi Tamura, Keita Itakura, Ryoichi Tsunori, Satoshi Hashizume
  • Patent number: 8900758
    Abstract: The present invention relates to a process for preparing a separator for an electrochemical device, including the steps of: applying a slurry including at least cellulose fibers and a hydrophilic pore former with a boiling point of 180° C. or more onto a substrate; drying the slurry to form a sheet on the substrate; and separating the sheet from the substrate to obtain a separator, wherein the separator has a volume resistivity of 1500 ?·cm or less determined by alternate current with a frequency of 20 kHz in which the separator is impregnated with a 1 mol/LiPF6/propylene carbonate solution. The present invention can provide a separator for electrochemical devices which has superior separator properties such as low inner resistivity for electrochemical devices, has high lithium shielding properties that cannot be exerted by non-woven fabrics, paper or the like, and can be prepared at a reasonable cost.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: December 2, 2014
    Assignee: Tokushu Tokai Paper Co., Ltd.
    Inventors: Satoshi Nemoto, Yoshiharu Machii, Eri Murakami
  • Publication number: 20140349193
    Abstract: Provided is a method of manufacturing a microporous polyolefin film useable as a battery separator, which is easy to control strength, permeability and shrinking properties of the microporous film and embodies excellent quality uniformity and production stability in fabricating the microporous film.
    Type: Application
    Filed: June 10, 2014
    Publication date: November 27, 2014
    Inventors: Gwi Gwon KANG, Jang-Weon Rhee, In Hwa Jung