Having Defined Porosity Either Functional Or By Size (i.e., Semipermeable, Permselective, Ionpermeable, Microporous, Etc.) Patents (Class 429/145)
  • Patent number: 10396330
    Abstract: Granules containing mixtures of silica powder and cross-linked rubber powder are used in the manufacture of battery separators or vehicle tires. A granule contains silica and rubber powders in proportional amounts that form a silica powder carrier within which rubber powder particles are distributed. Incorporating silica-rubber granules in the manufacturing process of polyethylene separators offers a way to limit water loss in and improve the cycle life of a deep cycle lead-acid battery. Incorporating silica-rubber granules in the manufacturing process of vehicle tires affords advantages including easier material handling, reduced production of dust, and reduction in the number of ingredients measured and added to the formulation.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: August 27, 2019
    Assignee: AMTEK RESEARCH INTERNATIONAL LLC
    Inventors: Richard W. Pekala, Jeff Frenzel, Robert R. Waterhouse
  • Patent number: 10388947
    Abstract: Graphitic carbon nitride materials are shown to be useful in Lithium-Sulfur electrochemical cells. Batteries that include this material exhibit increased electrode kinetics of the lithium-sulfur electrochemical couple, phenomena that improve the specific capacity, usable lifetime and other desirable characteristics of these batteries. Lithium-sulfur batteries that incorporate these materials can be used to overcome a number of limitations in this technology.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: August 20, 2019
    Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Young-Si Jun, Jeffrey A. Gerbec, Galen D. Stucky
  • Patent number: 10388932
    Abstract: A nonaqueous electrolyte secondary battery separator that is not easily curled is provided by a laminated body including a porous base material containing a polyolefin-based resin and a porous layer on at least one surface of the porous base material. The difference between the white index of a surface of the porous base material after being irradiated with ultraviolet light with an intensity of 255 W/m2 for 75 hours and the white index of the surface of the porous base material before irradiation is not more than 2.5. The porous layer contains a polyvinylidene fluoride-based resin which contains crystal form ? in an amount of not less than 36 mol % with respect to 100 mol % of a total amount of the crystal form ? and crystal form ? contained in the resin.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: August 20, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshihiko Ogata, Daizaburo Yashiki, Chikara Murakami
  • Patent number: 10388931
    Abstract: In accordance with at least selected embodiments, the present application or invention is directed to novel or improved porous membranes or substrates, separator membranes, separators, composites, electrochemical devices, batteries, methods of making such membranes or substrates, separators, and/or batteries, and/or methods of using such membranes or substrates, separators and/or batteries. In accordance with at least certain embodiments, the present application is directed to novel or improved porous membranes having a coating layer, battery separator membranes having a coating layer, separators, energy storage devices, batteries, including lead acid batteries including such separators, methods of making such membranes, separators, and/or batteries, and/or methods of using such membranes, separators and/or batteries.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: August 20, 2019
    Assignee: Daramic, LLC
    Inventors: J. Kevin Whear, Ahila Krishnamoorthy, Susmitha Appikatla
  • Patent number: 10381623
    Abstract: Provided is a lithium battery, wherein the battery comprises an anode, a cathode, wherein the cathode comprises one or more transition metals, an electrolyte, and a porous separator interposed between the cathode and anode, wherein the separator comprises an anionic compound. Also provided are methods of manufacturing such batteries.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: August 13, 2019
    Assignee: Optodot Corporation
    Inventors: Steven A. Carlson, Benjamin Sloan, David W. Avison
  • Patent number: 10367181
    Abstract: A separator includes a separation functional layer and a support layer. The separation functional layer is configured as a denser layer with a smaller pore size and a lower porosity than the support layer. Accordingly, movement of metal foreign objects from the positive electrode plate side to the negative electrode plate side, and precipitation of metal foreign objects on the negative electrode plate side can be inhibited, thereby making it possible to ensure battery performance and safety.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: July 30, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinori Shishida, Kenji Date, Takao Kuromiya
  • Patent number: 10367182
    Abstract: A laminated body includes: a porous base material containing a polyolefin-based resin as a main component, the porous base material having a predetermined phase difference and porosity; and a porous layer disposed on at least one surface of the porous base material, the porous layer containing a polyvinylidene fluoride-based resin, the polyvinylidene fluoride-based resin containing crystal form ? in an amount of not less than 34 mol % with respect to 100 mol % of a total amount of the crystal form ? and crystal form ? contained in the polyvinylidene fluoride-based resin.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: July 30, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshihiko Ogata, Takahiro Matsuo, Chikara Murakami
  • Patent number: 10361458
    Abstract: A laminated body includes: a porous base material containing a polyolefin-based resin as a main component; and a porous layer which is disposed on at least one surface of the porous base material and which contains a polyvinylidene fluoride-based resin, the laminated body being arranged so that: a diminution rate of diethyl carbonate dropped on the porous base material is 15 sec/mg to 21 sec/mg; a spot diameter of the diethyl carbonate 10 seconds after the diethyl carbonate was dropped on the porous base material is not less than 20 mm; and the polyvinylidene fluoride-based resin containing crystal form ? in an amount of not less than 36 mol % with respect to 100 mol % of a total amount of the crystal form ? and crystal form ? contained in the polyvinylidene fluoride-based resin. A nonaqueous electrolyte secondary battery separator made of the laminated body is not easily curled.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: July 23, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshihiko Ogata, Chikara Murakami
  • Patent number: 10283748
    Abstract: A porous membrane composition for a lithium ion secondary battery, including a first particulate polymer, wherein the first particulate polymer has a core-shell structure including a core portion and a shell portion that partially covers an outer surface of the core portion, the core portion is formed from a polymer having a swelling degree in an electrolytic solution of 5 times or more and 30 times or less, and the shell portion is formed from a polymer having a swelling degree in the electrolytic solution of 1 time or more and 4 times or less.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: May 7, 2019
    Assignee: ZEON CORPORATION
    Inventors: Tomokazu Sasaki, Junnosuke Akiike, Yasuhiro Wakizaka
  • Patent number: 10263234
    Abstract: Provided herein is a separator used for an electrochemical device such as a lithium-ion battery. The separator disclosed herein comprises a porous base material, a first protective porous layer coated on one side of the porous base material, and a second protective porous layer coated on the other side of the porous base material, wherein the first protective porous layer comprises an organic binder and a first inorganic filler, and wherein the second protective porous layer comprises an organic binder and a second inorganic filler different from the first inorganic filler. Also provided herein is a lithium-ion battery including the separator disclosed herein. The separator disclosed herein is excellent in terms of safety, ion permeability, and cycle characteristics.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: April 16, 2019
    Assignee: GRST International Limited
    Inventors: Sing Ming Tony Wong, Sing Hung Eric Wong, Peihua Shen, Yuen Hung, Kam Piu Ho, Ranshi Wang
  • Patent number: 10243188
    Abstract: A separator includes a non-woven substrate. The non-woven substrate includes a first and a second side. An adhesive coating is disposed on the first side, the second side, or both the first and second sides of the non-woven substrate. The adhesive coating is a surfactant. A porous polymer layer is disposed on the adhesive coating such that the adhesive coating forms an intermediate layer between the non-woven substrate and the porous polymer layer.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: March 26, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Hamid G. Kia, Xiaosong Huang
  • Patent number: 10236490
    Abstract: A separator for a rechargeable lithium battery and a rechargeable lithium battery including the same, the separator including a substrate, and a heat-resistant porous layer on at least one side of the substrate, the heat-resistant porous layer including a crosslinked binder and a non-crosslinked binder, wherein the crosslinked binder has a cross-linked structure of at least one crosslinkable compound, the at least one crosslinkable compound including a multi-functional urethane-based compound, and the crosslinked binder and the non-crosslinked binder are included in a weight ratio of about 3:7 to about 8:2.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: March 19, 2019
    Assignees: SAMSUNG SDI CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seungrim Yang, Byungmin Lee, Bokyung Jung, Myungkook Park, Eon-Mi Lee, Sungsoo Han, Hana Kim, Jungsue Jang, Minho Cho, Hyoungwoo Choi
  • Patent number: 10177362
    Abstract: Provided is a composition for a non-aqueous secondary battery functional layer capable of forming a functional layer for a non-aqueous secondary battery that can provide a battery component with high blocking resistance and cause excellent adhesiveness to be displayed before and after immersion in electrolysis solution. The composition contains a particulate polymer having a core-shell structure including a core portion and a shell portion partially covering an outer surface thereof. The core portion is formed by a polymer having a glass transition temperature of ?50° C. to 60° C. and a degree of swelling in electrolysis solution of at least a factor of 5 and no greater than a factor of 30. The shell portion is formed by a polymer having a glass transition temperature of 50° C. to 200° C. and a degree of swelling in electrolysis solution of greater than a factor of 1 and no greater than a factor of 4.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: January 8, 2019
    Assignee: ZEON CORPORATION
    Inventors: Junnosuke Akiike, Tomokazu Sasaki
  • Patent number: 10153473
    Abstract: An object is to provide a separator excellent in adhesiveness to electrodes and a separator for an electricity storage device also excellent in handling performance. A separator for an electricity storage device having a polyolefin microporous film and a thermoplastic polymer coating layer covering at least a part of at least one of surfaces of the polyolefin microporous film, in which the thermoplastic polymer coating layer, on the polyolefin microporous film, has a portion containing a thermoplastic polymer and a portion not containing the thermoplastic polymer in a sea-island configuration, the thermoplastic polymer coating layer contains the thermoplastic polymer having at least two glass-transition temperatures, at least one of the glass-transition temperatures is in a range of less than 20° C. and at least one of the glass-transition temperatures is in a range of 20° C. or more.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 11, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Hiroshi Miyazawa, Keitaro Ameyama, Takashi Shuto
  • Patent number: 10141556
    Abstract: Improved battery separators, batteries, and systems, as well as methods relating thereto are disclosed herein for use in various lead acid batteries such as valve-regulated lead acid (VRLA) batteries that include one or more AGM layers. The improved battery separators described herein may provide a battery system with an advantage of a significantly decreased acid filling time and a significantly increased acid filling speed. Various improved batteries, methods and systems are described herein using such improved battery separators that increase acid filling speed and decrease acid filling time for a VRLA battery.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: November 27, 2018
    Assignee: Daramic, LLC
    Inventors: Eric H. Miller, Robert W. Saffel
  • Patent number: 10084171
    Abstract: A nonaqueous electrolyte secondary battery includes an electrode body that has a positive electrode, a negative electrode, and a separator provided between the positive electrode and the negative electrode. A nonaqueous electrolyte is held at least in the separator. In at least a part of the separator, an amount of change in a thickness of the separator at a time of restraint at 10 MPa is 50% or more.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: September 25, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kosuke Iwase
  • Patent number: 10014506
    Abstract: A nonaqueous secondary battery separator, disposed between a cathode and an anode, includes: a porous base material containing a polyolefin as a main component; and a porous layer containing a polyvinylidene fluoride-based resin on at least one surface of the porous base material. The separator satisfies (C)/(D)?0.13, where (C) represents the average pore diameter (?m) of the porous base material, and (D) represents the porosity of the porous base material, in the porous layer after being immersed for 24 hours in an electrolyte solution having a temperature of 25° C. in which electrolyte solution LiPF6 having a concentration of 1.0 mole per liter is dissolved in a mixed solvent containing ethyl methyl carbonate, diethyl carbonate, and ethylene carbonate at a volume ratio of 50:20:30, the resin having absorbed the electrolyte solution having a volume of 0.05 to 5.00 cm3 per square meter of the porous layer.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: July 3, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Chikara Murakami, Toshihiko Ogata, Ichiro Arise, Kosuke Kurakane, Chikae Yoshimaru
  • Patent number: 9991493
    Abstract: A non-aqueous electrochemical cell including a lithium anode, a solid cathode, a first separator and a second separator disposed between the anode and the cathode, and an electrolyte in fluid communication with the anode, the cathode, and the first and the second separators, the first separator having a higher melting point (or shut-down) temperature than the melting point (or shut-down) temperature of the second separator.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: June 5, 2018
    Assignee: EAGLEPICHER TECHNOLOGIES, LLC
    Inventors: Umamaheswari Janakiraman, Ernest Ndzebet, Mario Destephen, Greg Miller, Joe Edington, Ramanathan Thillaiyan
  • Patent number: 9985263
    Abstract: The present invention is preferably directed to a polylactam ceramic coating for a microporous battery separator for a lithium ion secondary battery and a method of making this formulation and application of this formulation to make a coated microporous battery separator. The preferred inventive coating has excellent thermal and chemical stability, excellent adhesion to microporous base substrate, membrane, and/or electrode, improved binding properties to ceramic particles and/or has improved or excellent resistance to thermal shrinkage, dimensional integrity, and/or oxidation stability when used in a rechargeable lithium ion battery.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: May 29, 2018
    Assignee: Celgard, LLC
    Inventor: Insik Jeon
  • Patent number: 9972832
    Abstract: An active material comprising silica-attached particles in the form of host particles of silicon or silicon compound having spherical silica nano-particles attached to surfaces thereof is suited for use in nonaqueous electrolyte secondary batteries. The spherical silica nano-particles have an average particle size of 5-1000 nm, a particle size distribution D90/D10 of up to 3, and an average circularity of 0.8-1. The active material has high fluidity and exhibits improved cycle performance when used in nonaqueous electrolyte secondary batteries.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: May 15, 2018
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Tetsuo Nakanishi, Kazuyuki Matsumura
  • Patent number: 9923253
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a heat-resistant layer disposed between the positive electrode and the negative electrode. The positive electrode of this secondary battery contains a positive electrode active substance having a hollow structure, which has a shell portion and a hollow portion formed inside the shell portion. In addition, the heat-resistant layer contains plate-shaped inorganic filler particles as the main component.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: March 20, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Nagai, Takumi Tamaki, Harunari Shimamura
  • Patent number: 9923181
    Abstract: Provided is a laminate which is capable of ensuring a high level of safety by preventing an internal short circuit due to, for example, breakage of a non-aqueous electrolyte secondary battery while maintaining various performance capabilities of the non-aqueous electrolyte secondary battery. A laminate (10) includes: a porous film containing polyolefin as a main component; and a porous layer containing fine particles; the porous layer being laminated to at least one side of the porous film, in an electrical conduction test by nail penetration in which test a displacement in a thickness direction of the laminate (10) during a period from when a dielectric breakdown occurs in the laminate (10) to when the laminate (10) is brought into electrical conduction is measured by use of a nail (2) of N50 specified in JIS A 5508 and under a condition in which the nail (2) descends at a descending speed of 50 ?m/min, the displacement being not less than 20 ?m and not more than 200 ?m.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: March 20, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Chikae Yoshimaru, Kosuke Kurakane, Chikara Murakami
  • Patent number: 9923196
    Abstract: According to one embodiment, a plate or electrode for a lead-acid battery includes a grid of lead alloy material, a paste of active material applied to the grid of lead alloy material, and a nonwoven fiber mat disposed at least partially within the paste of active material. The nonwoven fiber mat includes a plurality of fibers, a binder material that couples the plurality of fibers together, and a conductive material disposed at least partially within the nonwoven fiber mat so as to contact the paste of active material. In some embodiments, the nonwoven fiber mat may have an electrical resistant of less than about 100,000 ohms per square to enable electron flow on a surface of the nonwoven fiber mat.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: March 20, 2018
    Assignee: Johns Manville
    Inventors: Zhihua Guo, Souvik Nandi, Jawed Asrar, Albert G Dietz, III
  • Patent number: 9917289
    Abstract: Provided is a laminate which is capable of ensuring a high level of safety by preventing an internal short circuit due to, for example, breakage of a non-aqueous electrolyte secondary battery while maintaining various performance capabilities of the non-aqueous electrolyte secondary battery.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: March 13, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Chikae Yoshimaru, Kosuke Kurakane, Chikara Murakami
  • Patent number: 9911958
    Abstract: Disclosed is a separator containing a porous polymer substrate and an inorganic particle layer formed on at least one surface of the porous polymer substrate, and the separator has increased insolubility for an electrolyte and enhanced dimensional stability at high temperatures, therefore, short circuit between a cathode and an anode may be suppressed even when an electrochemical device is overheated, and high temperature cycle characteristics of the electrochemical device are enhanced. In addition, discharge characteristics are improved due to an ion conductance enhancement, since the impregnation of the separator for the electrolyte increases.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: March 6, 2018
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Jin Hwan Kim, Young Jun Ko, Hyuk Yoo
  • Patent number: 9882190
    Abstract: Disclosed is a laminated separator including a first polyolefin microporous layer and a second polyolefin microporous layer which is laminated on the first polyolefin microporous layer and which is different from the first polyolefin microporous layer, wherein at least one of the first microporous layer and the second microporous layer includes an inorganic particle having a primary particle size of 1 nm or more and 80 nm or less.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 30, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Masahiro Ohashi, Keitaro Ameyama, Yuzuru Sakakibara
  • Patent number: 9871242
    Abstract: A composite separator and a lithium secondary battery including the composite separator, and the composite separator includes a separator; a first coating layer disposed on a surface of the separator and including a (meth)acrylic polymer and/or (meth)acrylic modified polyester resin; and a second coating layer disposed on another surface of the separator and including a vinylidene fluoride-based polymer.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: January 16, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chan Hong, Jeawoan Lee, Soomi Eo, Seunghee Park
  • Patent number: 9865857
    Abstract: A first laminated body includes: a porous film containing a polyolefin as a main component; and a porous layer on at least one surface of the porous film, the porous layer containing a resin. A second laminated body includes: a porous film containing a polyolefin as a main component; and a porous layer containing a resin. The laminated body is usable as a secondary battery separator having a higher dielectric strength. A third laminated body is provided in which occurrence of a curl is prevented. A nonaqueous secondary battery separator is provided disposed between a cathode and an anode, the separator including: a porous base material containing a polyolefin as a main component; and a porous layer on at least one surface of the porous base material, the porous layer containing a polyvinylidene fluoride-based resin.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: January 9, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Chikara Murakami, Toshihiko Ogata, Ichiro Arise, Kosuke Kurakane, Chikae Yoshimaru
  • Patent number: 9799868
    Abstract: A separator for a non-aqueous secondary battery includes a porous substrate and an adhesive porous layer provided on one or both sides of the porous substrate, the adhesive porous layer including a polyvinylidene-fluoride resin and a filler whose difference between a particle diameter at 90% cumulative volume and a particle diameter at 10% cumulative volume is 2 ?m or less, and the adhesive porous layer satisfying Inequality (1): 0.5?a/r?3.0, wherein, in Inequality (1), “a” represents an average thickness (?m) of the adhesive porous layer on one of the sides of the porous substrate; and “r” represents a volume average particle diameter (?m) of the filler contained in the adhesive porous layer.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: October 24, 2017
    Assignee: TEIJIN LIMITED
    Inventors: Ayumi Iwai, Takashi Yoshitomi, Satoshi Nishikawa
  • Patent number: 9799870
    Abstract: A polyolefin multilayer microporous membrane includes at least first microporous layers which form both surface layers of the membrane and at least a second microporous layer disposed between the both surface layers, wherein static friction coefficient of one of the surface layers of the polyolefin multilayer microporous membrane against another surface layer in a longitudinal direction (MD) is 1.1 or less, and wherein pore density calculated from an average pore radius measured by mercury porosimetry method and porosity, according to Formula (1) is 4 or more: Pore density=(P/A3)×104??(1) wherein A represents the average pore radius (nm) measured by mercury porosimetry method and P represents the porosity (%).
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: October 24, 2017
    Assignee: Toray Industries, Inc.
    Inventors: Toshiya Saito, Kazuhiro Yamada, Shintaro Kikuchi
  • Patent number: 9774021
    Abstract: A separator for a rechargeable lithium battery and a rechargeable lithium battery, the separator including a substrate, and a heat-resistant porous layer on at least one side of the substrate, the heat-resistant porous layer including an imide-based copolymer, wherein the imide-based copolymer includes a first repeating unit represented by Chemical Formula 1 and a second repeating unit represented by Chemical Formula 2:
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: September 26, 2017
    Assignees: SAMSUNG SDI CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jungsue Jang, Minho Cho, Hana Kim, Hyoungwoo Choi, Myungkook Park, Seungrim Yang, Byung Min Lee, Eon-Mi Lee, Bo Kyung Jung, Sung Soo Han
  • Patent number: 9748578
    Abstract: A battery plate assembly for a lead-acid battery is disclosed. The assembly includes a plates of opposing polarity each formed by an electrically conductive grid body having opposed top and bottom frame elements and opposed first and second side frame elements, the top frame element having a lug and an opposing enlarged conductive section extending toward the bottom frame element; a plurality of interconnecting electrically conductive grid elements defining a grid pattern defining a plurality of open areas, the grid elements including a plurality of radially extending vertical grid wire elements connected to the top frame element, and a plurality of horizontally extending grid wire elements, the grid body having an active material provided thereon. A highly absorbent separator is wrapped around at least a portion of the plate of a first polarity and extends to opposing plate faces. An electrolye is provided, wherein substantially all of the electrolyte is absorbed by the separator or active material.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: August 29, 2017
    Assignee: Johnson Controls Technology Company
    Inventors: Robert J. Mack, Jeffrey L. Troxel
  • Patent number: 9711784
    Abstract: Sulfur-based electrodes, and associated systems and methods for their fabrication, are generally described. Certain embodiments relate to sulfur-based electrodes with smooth external surfaces. According to some embodiments, relatively large forces can be applied to compositions from which the sulfur-based electrodes are made during the fabrication process. In some such embodiments, the compositions can maintain relatively high porosities, even after the relatively large forces have been applied to them. Methods in which liquids are employed during the electrode fabrication process are also described.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: July 18, 2017
    Assignees: Sion Power Corporation, BASF SE
    Inventors: Tracy Earl Kelley, Savannah V. Burnside-Joubert, Ruediger Schmidt, Holger Schneider, Klaus Leitner, Joern Kulisch
  • Patent number: 9624349
    Abstract: A polyolefin microporous membrane is produced by forming a gel-like molding using a polyolefin resin containing polypropylene, and stretching the molding in at least one direction, followed by washing, the polyolefin microporous membrane having an injection of electrolyte of 20 seconds or less and a uniform polypropylene distribution in at least one plane perpendicular to the thickness direction.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: April 18, 2017
    Assignee: Toray Battery Separator Film Co., Ltd.
    Inventors: Takeshi Ishihara, Koichi Kono
  • Patent number: 9564623
    Abstract: A battery separator for extending the cycle life of a battery has a separator and a conductive layer. The conductive layer is disposed upon the separator. The conductive layer is adapted to be in contact with the positive electrode of the battery thereby providing a new route of current to and from the positive electrode.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: February 7, 2017
    Assignee: Daramic LLC
    Inventors: Eric Henri Miller, John Randolph Timmons, John Kevin Whear
  • Patent number: 9508976
    Abstract: Implementations of the present disclosure generally relate to separators, high performance electrochemical devices, such as, batteries and capacitors, including the aforementioned separators, and methods for fabricating the same. In one implementation, a separator for a battery is provided. The separator comprises a substrate capable of conducting ions and at least one dielectric layer capable of conducting ions. The at least one dielectric layer at least partially covers the substrate and has a thickness of 1 nanometer to 2,000 nanometers.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: November 29, 2016
    Assignee: APPLIED MATERIALS, INC.
    Inventor: Subramanya P. Herle
  • Patent number: 9496535
    Abstract: A separator with a heat resistant insulation layer includes a porous substrate layer and a heat resistant insulation layer formed on one surface or both surfaces of the porous substrate layer and containing inorganic particles and a binder. The ratio of tensile strength in MD direction×fracture strain in MD direction to the tensile strength in TD direction×fracture strain in RD direction is in a range from 0.3 to 20. A ratio of the unit mass of the heat resistant insulation layer to the unit mass of the porous substrate layer is in a range from 0.5 to 2.5. Accordingly, the separator with a heat resistant insulation layer can have improved resistance to an internal short-circuit (shorting resistance).
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: November 15, 2016
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Takashi Honda
  • Patent number: 9484565
    Abstract: In an energy storage device including a positive electrode plate and a negative electrode plate that are insulated from each other with a separator interposed therebetween, and a non-aqueous electrolyte, the separator includes a base material layer and a coating layer that is disposed on at least one surface of the base material layer, and the separator has an air permeability of the base material layer of 25 (sec/100 cc) or greater and 250 (sec/100 cc) or less, a porosity of the base material layer of 45% or greater, an air permeability of an interface between the base material layer and the coating layer of 15 (sec/100 cc) or less, and an air permeability of the coating layer of 15 (sec/100 cc) or less.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: November 1, 2016
    Assignee: GS Yuasa International Ltd.
    Inventors: Akihiko Miyazaki, Sumio Mori, Tomonori Kako
  • Patent number: 9461290
    Abstract: Provided is a separator which shows excellent performance in electric insulation, electrolyte-holding property and ion- or electron-permeability and which can be stably manufactured. The separator is configured from a laminate non-woven fabric consisting of at least two layers, said layers including a non-woven fabric layer (layer I) that comprises a synthetic fiber having a fiber size of 0.1 ?m or greater and less than 4.0 ?m and a non-woven fabric layer (layer II) that comprises a thermoplastic resin fiber having a fiber size of 4.0-30.0 ?m inclusive, and has a weight per area of 3.0 g/m2 or greater and less than 20.0 g/m2.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: October 4, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Yusuke Yamada, Junichi Kusakabe, Rumina Obi, Shinichi Okajima, Kazufumi Kato
  • Patent number: 9379368
    Abstract: Provided are electrochemical systems with electronically and ionically conductive layers that have electronic, mechanical and chemical properties useful for a variety of applications including electrochemical storage and conversion. State of the art electrochemical cells are made with electronically non-conductive separators between the opposite electrodes as the natural choice to prevent any electronic path between the opposite electrodes. Herein, electronically conductive layers are introduced between an electrode and the separator without producing any direct electronic path between the opposite electrodes. Embodiments provide structural, physical and electrostatic attributes useful for managing and controlling dendrite formation and for improving the cycle life and rate capability of electrochemical cells including silicon anode based batteries, air cathode based batteries, redox flow batteries, solid electrolyte based systems, fuel cells, flow batteries and semisolid batteries.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: June 28, 2016
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventor: Farshid Roumi
  • Patent number: 9368293
    Abstract: Provide is a separator for a power storage device, which reliably prevents short circuits between positive and negative electrode layers while maintaining the permeating ions function, and effectively suppresses shrinkage, and a power storage device using the separator. The separator is composed of a composite material including inorganic microparticles and an organic binder, the composite material has a pigment volume concentration of 55% or more, and the inorganic microparticles have an average particle size in the range of 0.2 to 3.0 ?m, and a general particle shape index in the range of 0.50 to 0.85. The composite material can have a pigment volume concentration in the range of 55 to 80%, or 55 to 65%.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 14, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Norihiro Yoshikawa, Ichiro Nakamura, Hisao Kawamura
  • Patent number: 9356275
    Abstract: Disclosed is a laminated separator including a first polyolefin microporous layer and a second polyolefin microporous layer which is laminated on the first polyolefin microporous layer and which is different from the first polyolefin microporous layer, wherein at least one of the first microporous layer and the second microporous layer includes an inorganic particle having a primary particle size of 1 nm or more and 80 nm or less.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: May 31, 2016
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Masahiro Ohashi, Keitaro Ameyama, Yuzuru Sakakibara
  • Patent number: 9276247
    Abstract: A separator including a porous substrate, and a porous coating layer formed on at least one surface of the porous substrate and including a mixture of inorganic particles and a binder polymer. A continuous or discontinuous patterned layer is formed on the surface of the porous coating layer to allow an electrolyte solution to permeate therethrough. The continuous or discontinuous patterned layer may be formed with continuous grooves to allow an electrolyte solution to permeate therethrough. Due to this structure, the wettability of the separator with an electrolyte solution is improved, shortening the time needed to impregnate the electrolyte solution into the separator.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: March 1, 2016
    Assignees: LG CHEM, LTD., TORAY BATTERY SEPARATOR FILM CO., LTD.
    Inventors: Joo-Sung Lee, Jeong-Min Ha, Sun-Mi Jin, Bo-Kyung Ryu, Jong-Hun Kim
  • Patent number: 9263720
    Abstract: In one embodiment, battery separator for a lead acid battery includes a gel impregnated nonwoven. The nonwoven includes an acid dissolvable fiber and a non-acid dissolvable fiber. The gel may have a basis weight in a range of about 20-160% of the nonwoven's basis weight. In another embodiment, battery separator for a lead acid battery includes a microporous membrane with the gel impregnated nonwoven adhered thereto.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: February 16, 2016
    Assignee: Daramic, LLC
    Inventor: John R. Timmons
  • Patent number: 9252413
    Abstract: The present invention relates to a lithium secondary battery. More specifically, according to embodiments of the present invention the lithium battery, which includes a cathode, an anode, and a separate membrane inserted between the cathode and the anode, is characterized in that the separator membrane is a polyolefin porous membrane which has an aramid coating layer; and the cathode includes a lithium metal oxide cathode active material which has an olivine-type iron phosphate lithium coating layer, or the anode includes a carbon anode active material which has a spinel-type lithium titanium oxide coating layer. The lithium secondary battery in accordance with embodiments of the present invention has excellent basic electric performance and improved stability.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: February 2, 2016
    Assignee: KOKAM CO., LTD.
    Inventors: Ji-Jun Hong, In-Beom Hwang, Sung-Tae Ko, Yoon-Jeong Heo
  • Patent number: 9233343
    Abstract: Provided is a carbon dioxide separation membrane. The carbon dioxide separation membrane includes porous hollow titanium dioxide nanoparticles whose surfaces are modified with aminosilane having high affinity with carbon dioxide and a crosslinkable functional group. The carbon dioxide separation membrane provides both improved selectivity and improved permeability. In addition, the carbon dioxide separation membrane includes a copolymer matrix having excellent mechanical properties. Thus, it is possible to provide a carbon dioxide separation membrane having excellent selectivity and permeability as well as improved physical strength, chemical stability and temperature resistance.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: January 12, 2016
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Jong-Hak Kim, Dong Kyu Roh, Sang Jin Kim, Won Seok Chi, Sung Yeon Heo
  • Patent number: 9203071
    Abstract: The invention relates to microporous membranes having at least two layers, a first layer comprising polymethylpentene and a second layer which comprises a polymer and has a composition that is not substantially the same as that of the first layer. 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 batteries.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: December 1, 2015
    Assignee: Toray Battery Separator Film Co., Ltd.
    Inventors: Takeshi Ishihara, Satoshi Miyaoka
  • Patent number: 9136517
    Abstract: The invention relates to microporous polymeric membranes suitable for use as battery separator film. The membrane comprises polyethylene, polypropylene, and polymethylpentene. The invention also relates to a method for producing such a membrane, batteries containing such membranes as battery separators, methods for making such batteries, and methods for using such batteries.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: September 15, 2015
    Assignee: Toray Battery Separator Film Co., Ltd.
    Inventors: Takeshi Ishihara, Koichi Kono, Satoshi Miyaoka, Patrick Brant
  • Patent number: 9136563
    Abstract: A rechargeable battery is disclosed having electrode and separator structures which are made up of fiber-reinforced composite material, thereby allowing the battery itself to serve as an integral structural component. The utilization or efficiency of the rechargeable battery is considerably enhanced by rendering at least part of the matrix material of the electrodes and the separator porous, thereby to facilitate improved access to active sites on the electrodes, with the porosity in the separator allowing improved ion transport, both of which enhance cell operation. The porous structure also provides improved electrolyte containment and retention in the event of damage.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: September 15, 2015
    Assignee: BAE SYSTEMS PLC
    Inventors: Martyn John Hucker, Michael Dunleavy, Amy Elizabeth Dyke, Sajad Haq
  • Patent number: 9099739
    Abstract: In one aspect, a lithium secondary battery that includes a positive electrode including a high-voltage positive active material; and a separator is provided. The high voltage positive active material can have a discharge plateau voltage of greater than or equal to about 4.6V with respect to a Li counter electrode, and the separator can include a porous substrate having a porosity of about 40% to about 60%.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: August 4, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Won-Il Jung, Seon-Hye Kim