Having Longitudinal Electrically Conducting Tubes Or Cores Patents (Class 429/238)
  • Patent number: 11233235
    Abstract: Battery electrode compositions and methods of fabrication are provided that utilize composite particles. Each of the composite particles may comprise, for example, a high-capacity active material and a porous, electrically-conductive scaffolding matrix material. The active material may store and release ions during battery operation, and may exhibit (i) a specific capacity of at least 220 mAh/g as a cathode active material or (ii) a specific capacity of at least 400 mAh/g as an anode active material. The active material may be disposed in the pores of the scaffolding matrix material. According to various designs, each composite particle may exhibit at least one material property that changes from the center to the perimeter of the scaffolding matrix material.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: January 25, 2022
    Assignee: SILA NANOTECHNOLOGIES, INC.
    Inventors: Gleb Yushin, Eugene Berdichevsky, Alexander Jacobs, Alper Nese, Damian Harris, Bogdan Zdyrko
  • Patent number: 10644310
    Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery includes a plurality of composite particles. Each of the plurality of composite particles includes an inorganic particle and a carbonaceous material layer that covers the inorganic particle. The carbonaceous material layer includes a first region having a porosity of 4.7% or more and 34.8% or less, the first region being a region extending from the surface of the inorganic particle to the surface of an imaginary sphere that is centered at the center of the inorganic particle and has a radius of 3r, where r is a radius of the inorganic particle.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: May 5, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Daisuke Katou, Kenichi Hotehama
  • Publication number: 20150147617
    Abstract: The present disclosure provides an anode for a secondary battery, comprising a wire-type current collector; a metallic anode active material layer formed on the surface of the wire-type current collector and comprising a metallic anode active material; and an inert metal layer formed on the surface of the metallic anode active material layer and having no reactivity with lithium.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Yo-Han Kwon, Sang-Wook Woo, Je-Young Kim
  • Patent number: 9023533
    Abstract: A cable-type secondary battery, includes an electrode assembly including first and second polarity electrodes with a thin and long shape, each having a current collector whose cross-section perpendicular to its longitudinal direction is a circular, asymmetrical oval or polygonal shape, an electrode active material applied onto the surface of the current collector, and a separator or an electrolyte layer interposed between the electrodes; and a cover member surrounding the electrode assembly, wherein the cable-type secondary battery is provided with a first polarity terminal and a second polarity terminal connected to the first polarity electrode and the second polarity electrode, respectively, at the first end of the cable-type secondary battery; a housing cap configured to fix the first and second polarity terminals and cover the first end of the cable-type secondary battery; and a length-adjustable coupling unit at a second end of the cable-type secondary battery.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: May 5, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Je-Young Kim
  • Patent number: 9005819
    Abstract: The present invention relates to an anode for a secondary battery, comprising: a wire-type current collector; a metal-based anode active material layer formed on the surface of the wire-type current collector, and comprising a metallic active material; and a graphite-based anode composite layer formed on the surface of the metal-based anode active material layer, and comprising a mixture of a graphite-based active material, a conductive material and a first polymer binder. The anode of the present invention has the metal-based anode active material layer together with the graphite-based anode composite layer acting as a buffer, thereby preventing the metallic active material from being isolated or released even if excessive volume expansion occurs during charging and discharging processes. Also, the graphite-based anode composite layer has good affinity with an organic electrolyte solution to compensate the defect of the metallic active material having low affinity with an organic electrolyte solution.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: April 14, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Dong-Sub Jung, Sang-Wook Woo, Je-Young Kim
  • Patent number: 8993172
    Abstract: A battery on a conductive metal wire and components of a battery on a conductive metal wire of circular cross section diameter of 5-500 micrometers and methods of making the battery and battery components are disclosed. In one embodiment, the battery features a porous anode or cathode layer which assist with ion exchange in batteries. Methods of forming the porous anode or cathode layer include deposition of an inert gas or hydrogen enriched carbon or silicon layer on a heated metal wire followed by annealing of the inert gas or hydrogen enriched carbon silicon layer. Energy storage devices having bundles of batteries on wires are also disclosed as are other energy storage devices.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: March 31, 2015
    Assignee: Kalptree Energy, Inc.
    Inventor: Deepak Upadhyaya
  • Patent number: 8980478
    Abstract: A cable-type secondary battery, includes an electrode assembly including first and second polarity electrodes with a thin and long shape, each electrode having a current collector whose cross-section perpendicular to its longitudinal direction is a circular, asymmetrical oval or polygonal shape, and an electrode active material applied onto the surface of the current collector, and a separator or an electrolyte layer interposed between the first and second polarity electrodes; and a cover member surrounding the electrode assembly. Also, the cable-type secondary battery is provided with a first polarity terminal and a second polarity terminal connected to the first polarity electrode and the second polarity electrode, respectively, at the end of the cable-type secondary battery; and a housing cap configured to fix the first and second polarity terminals and cover the end of the cable-type secondary battery.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: March 17, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Je-Young Kim, Byung-Hun Oh
  • Patent number: 8968937
    Abstract: The present invention relates to an anode for a secondary battery, comprising at least two anode wires which are parallel to each other and spirally twisted, each of the anode wires having an anode active material layer coated on the surface of a wire-type current collector; and a secondary battery comprising the anode. The anode of the present invention has an increased surface area to react with Li ions during a charging and discharging process, thereby improving the rate characteristics of a battery, and also release stress or pressure applied in the battery, e.g., the volume expansion of active material layers to prevent the deformation of the battery and ensure the stability thereof, thereby improving the life characteristic of the battery.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: March 3, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Sang-Wook Woo, Je-Young Kim
  • Patent number: 8962191
    Abstract: An electrochemical cell is presented. The electrochemical cell includes an elongated ion-conducting separator defining at least a portion of a first compartment; a positive electrode composition disposed in the first compartment, the positive electrode composition comprising at least one electroactive metal, at least one alkali metal halide, and at least one electrolyte. A positive current collector is further disposed in the first compartment such that a portion of the positive current collector extends into the positive electrode composition, and a primary dimension of the extended portion of the positive current collector is less than about 20% of a primary dimension of the first compartment. A related method for the preparation of an electrochemical cell is also presented.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: February 24, 2015
    Assignee: General Electric Company
    Inventors: Michael Alan Vallance, Brandon Alan Bartling
  • Patent number: 8920979
    Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: an inner electrode having an inner current collector and an inner electrode active material layer surrounding the outer surface of the inner current collector; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer, and having an outer electrode active material layer, an open-structured outer current collector and a conductive paste layer. The outer electrode having a conductive paste layer and an open-structured outer current collector according to the present invention has good flexibility to improve the flexibility of a cable-type secondary battery having the same. Also, the conductive paste layer is made of a light material, and thus can contribute to the lightening of the cable-type secondary battery.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: December 30, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Sang-Wook Woo, Hye-Ran Jung, Je-Young Kim, Heon-Cheol Shin
  • Patent number: 8911905
    Abstract: An anode of a lithium battery includes a composite film, the composite film includes a carbon nanotube film structure and a plurality of nanoscale tin oxide particles dispersed therein. A lithium battery includes at least a cathode, an electrolyte, and the anode mentioned above. A charge/discharge capacity of the lithium battery using the anode can be improved.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: December 16, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chen Feng, Hao-Xu Zhang, Kai-Li Jiang, Shou-Shan Fan
  • Publication number: 20140315093
    Abstract: A scaffold includes struts that intersect at nodes. In some instances, a cross section of the cores has at least one dimension less than 100 microns. The core can be a solid, liquid or a gas. In some instances, one or more shell layers are positioned on the core.
    Type: Application
    Filed: April 16, 2014
    Publication date: October 23, 2014
    Applicant: California Institute of Technology
    Inventors: Julia R. Greer, Michael Ortiz, Lucas R. Meza, Lauren C. Montemayor, Jiao Wu, Xun W. Gu
  • Publication number: 20140302375
    Abstract: A lithium ion battery includes at least one battery cell. The battery cell includes a cathode electrode, an anode electrode, and a separator. The separator is sandwiched between the cathode electrode and the anode electrode. At least one of the cathode electrode and the anode electrode includes a current collector. The current collector is a carbon nanotube layer consisting of a plurality of carbon nanotubes.
    Type: Application
    Filed: June 18, 2014
    Publication date: October 9, 2014
    Inventors: JIA-PING WANG, KE WANG, KAI-LI JIANG, SHOU-SHAN FAN
  • Patent number: 8835057
    Abstract: The present invention relates to an anode for a secondary battery, comprising: a spiral anode having at least two anode wires which are parallel to each other and spirally twisted, each of the anode wires having an anode active material layer coated on the surface of a wire-type current collector; and a conductive layer formed to surround the spiral anode. The anode active material layer of the spirally-twisted has a thin thickness as compared with a single strand of an anode having the same anode active material. Therefore, Li ions can be easily diffused to enhance battery performance. Also, the anode of the present invention has a conductive layer on the surface thereof to prevent or alleviate the release of an anode active material which is caused by volume expansion during charging and discharging processes, and to solve the isolation of the anode active material.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: September 16, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Byung-Hun Oh, Dong-Sub Jung, Je-Young Kim
  • Patent number: 8822088
    Abstract: A power storage device which has high charge/discharge capacity and less deterioration in battery characteristics due to charge/discharge and can perform charge/discharge at high speed is provided. A power storage device includes a negative electrode. The negative electrode includes a current collector and an active material layer provided over the current collector. The active material layer includes a plurality of protrusions protruding from the current collector and a graphene provided over the plurality of protrusions. Axes of the plurality of protrusions are oriented in the same direction. A common portion may be provided between the current collector and the plurality of protrusions.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: September 2, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryota Tajima, Shunpei Yamazaki, Teppei Oguni, Takeshi Osada, Shinya Sasagawa, Kazutaka Kuriki
  • Patent number: 8785053
    Abstract: A current collector includes a support and at least one carbon nanotube layer. The support includes two surfaces. The at least one carbon nanotube layer is located on one of the two surfaces of the support. The at least one carbon nanotube layer includes a number of uniformly distributed carbon nanotubes. A lithium ion battery includes a cathode electrode and an anode electrode. At least one of the cathode electrode and the anode electrode includes the current collector.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 22, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Jia-Ping Wang, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 8669011
    Abstract: Embodiments of the present invention generally relate to lithium-ion batteries, and more specifically, to a system and method for fabricating such batteries using thin-film processes that form three-dimensional structures. In one embodiment, an anodic structure used to form an energy storage device is provided. The anodic structure comprises a flexible conductive substrate, a plurality of conductive microstructures formed on the conductive substrate, comprising a plurality of columnar projections and dendritic structures formed over the plurality of columnar projections and a plurality of tin particles formed on the plurality of conductive microstructures. In another embodiment, the anodic structure further comprises a tin nucleation layer comprising tin particles formed on the flexible conductive substrate between the flexible conductive substrate and the plurality of conductive microstructures.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: March 11, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Sergey D. Lopatin, Dmitri A. Brevnov, Connie P. Wang, Robert Z. Bachrach
  • Publication number: 20140057179
    Abstract: A battery electrode composition is provided comprising composite particles, with each composite particle comprising active material and a scaffolding matrix. The active material is provided to store and release ions during battery operation. For certain active materials of interest, the storing and releasing of the ions causes a substantial change in volume of the active material. The scaffolding matrix is provided as a porous, electrically-conductive scaffolding matrix within which the active material is disposed. In this way, the scaffolding matrix structurally supports the active material, electrically interconnects the active material, and accommodates the changes in volume of the active material.
    Type: Application
    Filed: August 22, 2013
    Publication date: February 27, 2014
    Applicant: Sila Nanotechnologies Inc.
    Inventors: Gleb Nikolayevich Yushin, Bogdan Zdyrko, Addison Newcomb Shelton, Eugene Michael Berdichevsky, Igor Luzinov, Alexander Thomas Jacobs, Eerik Torm Hantsoo, George Pius Gomes
  • Patent number: 8574767
    Abstract: Thin-film electrodes and battery cells, and methods of fabrication. A thin film electrode may be fabricated from a non-metallic, non-conductive porous support structure having pores with micrometer-range diameters. The support may include a polymer film. A first surface of the support is metalized, and the pores are partially metallized to create metal tubes having a thickness within a range of 50 to 150 nanometers, in contact with the metal layer. An active material is disposed within metalized portions of the pores. An electrolyte is disposed within non-metalized portions of the pores. Active materials may be selected to create an anode and a cathode. Non-metalized surfaces of the anode and cathode may be contacted to one another to form a battery cell, with the non-metalized electrolyte-containing portions of the anode facing the electrolyte-containing portions of the cathode pores. A battery cell may be fabricated as, for example, a nickel-zinc battery cell.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: November 5, 2013
    Assignee: The Johns Hopkins University
    Inventors: Rengaswamy Srinivasan, Jeffrey P. Maranchi, Lance M. Baird, Ryan M. Deacon, Arthur S. Francomacaro, Paul J. Biermann, Craig B. Leese, Gary E. Peck
  • Patent number: 8546020
    Abstract: Embodiments of the present invention generally relate to lithium-ion batteries, and more specifically, to a system and method for fabricating such batteries using thin-film processes that form three-dimensional structures. In one embodiment, an anodic structure used to form an energy storage device is provided. The anodic structure comprises a flexible conductive substrate, a plurality of conductive microstructures formed on the conductive substrate, comprising a plurality of columnar projections and dendritic structures formed over the plurality of columnar projections and a plurality of tin particles formed on the plurality of conductive microstructures. In another embodiment, the anodic structure further comprises a tin nucleation layer comprising tin particles formed on the flexible conductive substrate between the flexible conductive substrate and the plurality of conductive microstructures.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: October 1, 2013
    Assignee: Applied Materials, Inc.
    Inventors: Sergey D. Lopatin, Dmitri A. Brevnov, Connie P. Wang, Robert Z. Bachrach
  • Patent number: 8530114
    Abstract: A solid oxide fuel cell (SOFC) interconnect comprises a metal sheet with an air side and a fuel side in accordance with an embodiment of the present invention. The metal sheet comprises a metallic composite having a matrix. The matrix comprises a first metal. The metal sheet also comprises a plurality of discontinuous, elongated, directional reinforcement wires. The reinforcement wires comprise a second metal that is immiscible in the first metal. An oxidation protection layer is disposed on the air side of the metal sheet.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: September 10, 2013
    Assignee: The Boeing Company
    Inventor: Brad L. Kirkwood
  • Patent number: 8530084
    Abstract: An electrode 13 has an active material layer 12 formed on each of two whole main surfaces of a current collector 11. A part of an electrode lead 14 overlaps the electrode 13. One end face of the electrode 13 in the width direction of the electrode 13 is flush with one end face of the electrode lead 14. Joints 15 are formed at the one end of the electrode 13 in the width direction. The joints 15 join the electrode 13 and the electrode lead 14 so as to provide electrical continuity between the exposed part of the current collector 11 at the one end face of the electrode 13 in the width direction and the electrode lead 14. The joints 15 are formed, for example, by plasma welding.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: September 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Hitoshi Katayama, Takashi Nonoshita, Takeshi Kasamatsu, Shoichi Imashiku, Seiichi Kato, Masanori Sumihara
  • Patent number: 8481214
    Abstract: An electrode including structures configured to prevent an intercalation layer from detaching from the electrode and/or a structure configured to create a region on the electrode having a lower concentration of intercalation material. The electrode includes a support filament on which the intercalation layer is disposed. The support filament optionally has nano-scale dimensions.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: July 9, 2013
    Assignee: Catalyst Power Technologies
    Inventor: Ronald Anthony Rojeski
  • Patent number: 8465875
    Abstract: It is an object of the present invention to provide a sheet-shaped three-dimensional network aluminum porous body for a current collector which is suitably used for electrodes for nonaqueous electrolyte batteries and electrodes for capacitors, an electrode and a capacitor each using the same. In such a three-dimensional network aluminum porous body for a current collector, the aluminum porous body has been made to have a compressive strength in a thickness direction of 0.2 MPa or more in order to efficiently fill an active material into the sheet-shaped three-dimensional network aluminum porous body.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: June 18, 2013
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Toyama Co., Ltd.
    Inventors: Akihisa Hosoe, Kazuki Okuno, Hajime Ota, Koutarou Kimura, Kengo Goto, Hideaki Sakaida, Junichi Nishimura
  • Patent number: 8445132
    Abstract: A manufacturing method for a battery is provided in the present invention. The manufacturing method includes the steps of: S1 rolling up a positive-electrode structure by a carbon rod; S2 rolling up a separation structure; S3 rolling up a negative-electrode structure; and S4 inserting the carbon rod with the positive-electrode structure, the separation structure and the negative-electrode structure into a paper tube. At least one of the positive-electrode structure and the negative-electrode structure contains chlorophyll. Thus not only is the manufacturing method of the battery simple, and economical, but also natural, non-toxic substances are employed, unlike the conventional batteries, the battery of the present invention will not cause environmental pollution even when discarding after being used.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: May 21, 2013
    Assignee: Innot Bioenergy Holding Co.
    Inventor: Chungpin Liao
  • Patent number: 8440355
    Abstract: The present invention relates to an equalizing electrode plate with insulated split-flow conductive structure, which is a specifically installed insulated split-flow conductive structure with internal conductive body coated with insulator; one end of the insulated split-flow conductive structure connects to the electric energy input/output terminal of the electrode plate, and another end connects to the electrode plate area farther away from the electric energy input/output terminal and/or with larger impedance in the electrode plate; thus the dedicated insulated split-flow conductive structure connects with the electric energy input/output terminal to specifically transmit the electric energy therebetween.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: May 14, 2013
    Inventor: Tai-Her Yang
  • Patent number: 8399134
    Abstract: A lead acid battery includes a housing and at least one cell disposed within the housing. Each cell includes at least one positive plate and at least one negative plate and an electrolyte disposed in a volume between the positive and negative plates. The at least one negative plate includes a current collector, consisting essentially of a layer of carbon foam disposed on a substrate, and a chemically active material disposed on the current collector.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: March 19, 2013
    Assignee: Firefly Energy, Inc.
    Inventors: Kurtis C. Kelley, Matthew J. Maroon
  • Patent number: 8389156
    Abstract: This invention provides a negative electrode and a non-aqueous electrolyte secondary battery including the negative electrode. The negative electrode includes a Li-absorbing element as a negative electrode active material, is free from deformation, separation of the negative electrode active material layer from the negative electrode current collector, and deposition of lithium on the negative electrode current collector, and is excellent in cycle characteristic, large-current discharge characteristic, and low-temperature discharge characteristic. The negative electrode of this invention includes: a current collector having depressions and protrusions on a surface in the thickness direction thereof; and a negative electrode active material layer that includes a plurality of columns containing a negative electrode active material that absorbs and releases lithium ions, the columns being grown outwardly from the surface of the current collector.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: March 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Katsumi Kashiwagi, Kazuyoshi Honda, Masaki Hasegawa, Masaya Ugaji, Yasutaka Kogetsu, Shuji Ito
  • Patent number: 8367240
    Abstract: A battery comprising a first electrode, a second electrode, a separator interposed between the first electrode and the second electrode, and an electrolyte having lithium ion conductivity. The first electrode and the second electrode are wound with the separator interposed therebetween to form an electrode assembly. The first electrode includes a current collector and an active material layer carried on one face of the current collector. The active material layer includes columnar particles having a bottom and a head, the bottom of the columnar particles being adhered to the current collector. The head of the columnar particles is positioned at an outer round side of the electrode assembly than the bottom.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: February 5, 2013
    Assignee: Panasonic Corporation
    Inventor: Kazuyoshi Honda
  • Patent number: 8357469
    Abstract: A bipolar battery construction is disclosed comprising a substrate, openings in the substrate, an electrically conductive material placed within the openings, a negative and positive current collector foil placed on opposing sides of the substrate and negative and positive pasting frame members. The electrically conductive material may have a melting point below the thermal degradation temperature of the substrate.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: January 22, 2013
    Assignee: Advanced Battery Concepts, LLC
    Inventors: Edward Otto Shaffer, II, William Buttfield Brecht
  • Patent number: 8318359
    Abstract: An electrode for a lithium secondary battery including a sheet-like current collector and an active material layer carried on the current collector. The active material layer is capable of absorbing and desorbing lithium, and the active material layer includes a plurality of columnar particles having at least one bend. An angle ?1 formed by a growth direction of the columnar particles from a bottom to a first bend of the columnar particles, and a direction normal to the current collector is preferably 10° or more and less than 90°. When ?n+1 is an angle formed by a growth direction of the columnar particles from an n-th bend counted from a bottom of the columnar particles to an (n+1)-th bend, and the direction normal to the current collector, and n is an integer of 1 or more, ?n+1 is preferably 0° or more and less than 90°.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: November 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Keiichi Takahashi, Masaya Ugaji, Yasutaka Kogetsu, Shinji Mino, Nobuaki Nagao, Masaki Hasegawa
  • Patent number: 8313862
    Abstract: A non-aqueous electrolyte secondary battery has at least negative electrode, a positive electrode, and a separator between the positive electrode and negative electrode. Negative electrode has columnar first negative electrode active materials that are discretely formed on the outer peripheral surface of negative electrode current collector in the winding direction and can reversibly insert and extract lithium ions, and columnar second negative electrode active materials discretely formed on the inner peripheral surface. The positive electrode has positive electrode mixture layers containing a positive electrode active material capable of reversibly inserting and extracting lithium ions, on both surfaces of a positive electrode current collector. The difference between the porosity generated between first negative electrode active materials in negative electrode and that generated between the second negative electrode active materials in winding is set within 1.1%.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: November 20, 2012
    Assignee: Panasonic Corporation
    Inventors: Takayuki Shirane, Kaoru Inoue, Masaya Ugaji
  • Patent number: 8303672
    Abstract: An electrode for a lithium secondary battery including a sheet-like current collector and an active material layer carried on the current collector. The active material layer is capable of absorbing and desorbing lithium, and the active material layer includes a plurality of columnar particles having at least one bend. An angle ?1 formed by a growth direction of the columnar particles from a bottom to a first bend of the columnar particles, and a direction normal to the current collector is preferably 10° or more and less than 90°. When ?n+1 is an angle formed by a growth direction of the columnar particles from an n-th bend counted from a bottom of the columnar particles to an (n+1)-th bend, and the direction normal to the current collector, and n is an integer of 1 or more, ?n+1 is preferably 0° or more and less than 90°.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: November 6, 2012
    Assignee: Panasonic Corporation
    Inventors: Keiichi Takahashi, Masaya Ugaji, Yasutaka Kogetsu, Shinji Mino, Nobuaki Nagao, Masaki Hasegawa
  • Patent number: 8257869
    Abstract: An electrode for an electrochemical element reversibly absorbing and releasing lithium ions including: a current collector having a higher first convex portion and a lower second convex portion on at least one surface thereof; a columnar body including an active material formed in such a manner as to rise obliquely on the first convex portion and the second convex portion of the current collector.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: September 4, 2012
    Assignee: Panasonic Corporation
    Inventors: Hideharu Takezawa, Shoichi Imashiku, Kaoru Nagata, Takashi Otsuka
  • Patent number: 8236454
    Abstract: A negative electrode for a lithium ion secondary battery of the present invention includes a sheet-like current collector and an active material layer carried on the current collector. The current collector includes a substrate and a surface portion that undergoes plastic deformation more easily than the substrate. The surface portion has protrusions and recesses. The active material layer includes a plurality of columnar particles containing silicon. The columnar particles are carried on the surface portion.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: August 7, 2012
    Assignee: Panasonic Corporation
    Inventors: Yasutaka Kogetsu, Shuji Ito
  • Patent number: 8192863
    Abstract: A flexible energy storage device comprising a flexible housing; an electrolyte contained within the housing; an anode and cathode comprise a current collector and anode/cathode material supported on the current collector. The current collector comprising a fabric substrate (101) and an electron-conductive material (102). The electron conductive material contains voids to enable penetration of the current collector by the electrolyte.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: June 5, 2012
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Adam S. Best, Graeme A. Snook, Anthony G. Pandolfo, Anthony F. Hollenkamp, Ilias L. Kyratzis, Richard J. N. Helmer
  • Patent number: 8187755
    Abstract: Having a current collector having a concave portion and a convex portion at least on one side, and a columnar body formed on the convex portion of the current collector, the columnar body contains an active material for inserting and extracting lithium ions bonding at least with oxygen, and the oxygen content ratio of the active material of the columnar body becomes smaller as going away from the interface of the current collector.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: May 29, 2012
    Assignee: Panasonic Corporation
    Inventors: Masaya Ugaji, Keisuke Ohara, Kazuhiro Watanabe
  • Patent number: 8029933
    Abstract: A negative electrode for a non-aqueous electrolyte secondary battery reversibly inserting and extracting lithium ions, and including current collector having concave portion and convex portion on at least one surface thereof; and columnar body formed on convex portion of current collector and including columnar body portions laminated in n stages (n?2) in which a content ratio of an element sequentially changes in the longitudinal direction of the current collector. The content ratio of an element is different between in an odd stage and in an even stage of columnar body portions.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: October 4, 2011
    Assignee: Panasonic Corporation
    Inventors: Masaya Ugaji, Masaki Hasegawa, Taisuke Yamamoto, Keisuke Ohara
  • Patent number: 7960049
    Abstract: A rechargeable lithium battery including an electrode assembly having a positive electrode including a positive current collector partially coated with a positive active material to form a positive coated region and a positive uncoated region, a negative electrode including a negative current collector partially coated with a negative active material to form a negative coated region and a negative uncoated region and a separator between the positive electrode and the negative electrode. The electrode assembly is spirally wound a plurality of times with the positive uncoated region and the negative uncoated region together forming a core central to the spirally-wound electrode assembly and wound from 3 to 15 times.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: June 14, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jea-Woan Lee
  • Patent number: 7851089
    Abstract: An electrode plate for a battery includes a current collector having a substrate and a plurality of protrusions that are carried on the substrate; and an active material layer that is carried on the current collector. The protrusions include a conductive material that undergoes plastic deformation more easily than the substrate. A lithium secondary battery includes the above electrode plate.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: December 14, 2010
    Assignee: Panasonic Corporation
    Inventors: Yasutaka Kogetsu, Kazuyoshi Honda
  • Patent number: 7618748
    Abstract: An electrical energy storage device includes a substrate having an outer surface and having a plurality of cavities communicating with the outer surface. The cavities have interior cavity surfaces. A first electrode layer is deposited at least over the interior cavity surfaces. An electrolyte separator layer is formed over the first electrode layer so as to fill the cavities and to extend over the outer surface of the planar substrate. A second electrode layer is formed over the electrolyte separator layer on the outer surface of the planar substrate.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: November 17, 2009
    Assignee: Tel Aviv University Future Technology Development L.P.
    Inventors: Menachem Nathan, Emanuel Peled, Diana Golodnitsky, Ela Strauss, Vladimir Yufit, Tania Ripenbein, Inna Schechtman, Svetlana Menkin
  • Patent number: 7611805
    Abstract: An electrochemical cell comprising a cathode of a powder material pressed into intimate contact with a rod-shaped current collector and an anode at least partially wrapped around the cathode is described. The cathode current collector is preferably provided with a plurality of offset flats offset with respect to each other. This helps prevent the cathode active material from sliding off of the rod-shaped current collector. The anode has spaced apart edges at opposite ends of its width that form a gap with the anode wrapped around the cathode. This helps in sliding the anode/cathode electrode assembly into a cylindrical tube comprising the cell casing. A preferred chemistry is a lithium/CFx activated with a nonaqueous electrolyte.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: November 3, 2009
    Assignee: Greatbatch Ltd.
    Inventors: Dominick Frustaci, Donald Kaiser, Paul Hallifax, John Duggan, Kenneth Moceri
  • Patent number: 7527897
    Abstract: An electrical energy storage device (20) includes a microchannel plate (MCP) (22) having channels (24) formed therein, the channels having surface areas. Thin films (26) are formed over the surface areas and define an anode (34,38), a cathode (34,38), and a solid electrolyte (36) disposed between the anode and the cathode.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: May 5, 2009
    Assignee: Tel Aviv University Future Technology Development L.P.
    Inventors: Menachem Nathan, Emanuel Peled, Diana Golodnitsky, Ela Strauss, Vladimir Yufit, Tania Ripenbein, Inna Shechtman, Svetlana Menkin
  • Patent number: 7407727
    Abstract: An electrode according to the invention can provide a non-aqueous electrolyte secondary battery having an ability to release a volume expansion at the time of charge and discharge as well as the time of a cycle. The electrode comprises a current collector made of a material which is not alloyed with Li, and a dot pattern 2 of a metallic material able to be alloyed with Li formed on the current collector. At the time of charge, since the volume expansion of each dot 3 is carried out so as to bury adjoining crevices 4 between the dots, a stress generated is released, thereby degradation of an electrode being avoided. Each dot may also be made into porosity.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: August 5, 2008
    Assignee: Hitachi Maxell Ltd.
    Inventors: Hiromu Sugiyama, Hideyuki Morimoto, Atsushi Ueda, Shigeo Aoyama
  • Patent number: 7045247
    Abstract: A cathode having a groove extending about 10 to about 450 microns into a surface of the cathode. The cathode can also be roughened.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: May 16, 2006
    Assignee: The Gillette Company
    Inventors: Terry Copeland, Stuart M. Davis, Tae-Won Lee, Alexander A. Leef, Gary A. Miller, Shuming Zeng
  • Patent number: 6942943
    Abstract: A loaded plate for use with or as part of a fuel cell of a fuel cell stack in which the loading material of the plate is in cord form. The loading material can be either an electrolyte or a catalyst and the cord form is realized by extruding the loading material on the plate.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: September 13, 2005
    Assignee: FuelCell Energy, Inc.
    Inventors: Chao M. Huang, Chao-Yi Yuh, Mohammad Farooque
  • Patent number: 6893777
    Abstract: The present invention relates to a current collector for an electrochemical cell. The current collector has a unique grid structure comprised of a frame supporting a plurality of radial strands as conductors radiating outwardly from a focal point on a connector tab. The frame and radial conductors are maintained in a fan-like orientation with respect to each other by two groups of concentric conductor strands, one located adjacent to the tab, the other spaced a substantial distance therefrom. The radiating conductors provide a more direct path to the connector tab for electron flow. This results in the current collector having reduced internal resistance in comparison to conventional current collector designs.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: May 17, 2005
    Assignee: wilson Greatbatch Ltd.
    Inventor: Joseph M. Probst
  • Publication number: 20040253519
    Abstract: The invention describes a current collector for electrochemical cells, consisting of a sandwich of compressible and resilient layers of metal wires, which imparts a predetermined mechanical load under a broad compression range.
    Type: Application
    Filed: April 22, 2004
    Publication date: December 16, 2004
    Inventors: Dario Oldani, Manuela Manghi
  • Patent number: 6800398
    Abstract: A battery used by rolling a pole plate, formed by filling an active material, around a substrate using a band-shaped metal porous body having three-dimensionally linked spaces is inferior in flexibility and likely to short-circuit. According to this invention, grooves are formed in active material-filled substrate filled with the above active material, and then the grooved substrate is pressed flat to form groove active material layers, whereby cracks are made in the bottoms of the grooves preferentially, and cracks are pressed by the groove active material layers and blocked to prevent the flow-out of swelled projections of the cracks and the active material. Accordingly, a higher-capacity and higher-reliability battery is provided.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: October 5, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Satoshi Furuya, Gota Asano, Masaharu Miyahisa, Ayahito Shiosaki, Yoshihisa Inaba, Yoshiyuki Tada
  • Publication number: 20040191618
    Abstract: An electrochemical device includes at least one carrier substrate, and a stack of functional layers including at least one electrically conducting layer that includes metal oxide(s), and a multicomponent electrode including at least one electrochemically active layer, at least one higher-conductivity material and at least one network of one of conducting wires and conducting strips. The higher-conductivity material has a surface resistance that is lower than a surface resistance of the electrically conducting layer. The stack of functional layers is arranged between two substrates, and each may be rigid, of glass type or rigid polymer or semi-rigid or flexible of PET type.
    Type: Application
    Filed: April 8, 2004
    Publication date: September 30, 2004
    Applicant: SAINT-GOBAIN GLASS FRANCE
    Inventors: Claude Morin, Fabien Beteille, Jean-Christophe Giron