Search Patents
  • Battery cell containing potassium monoperoxysulfate in the cathode mix
    Patent number: 4555457
    Abstract: A battery cell which comprises an anode element of magnesium alloy metal, a carbon or stainless steel current collector, and a manganese-dioxide-type cathode mix and electrolyte comprising mainly manganese dioxide with the addition of potassium monoperoxysulfate to substantially improve the open-circuit voltage of the battery cell and to substantially decrease polarization. Additions to said mix of such metal oxides as nickel oxide, lead dioxide, cobalt oxide, aluminum oxide, copper oxide, silver oxide or others substantially contribute to increased battery capacity. The addition of lithium chloride to the above improved battery cell in small amounts substantially increases the low-temperature range of these battery cells without improvement of battery capacity.
    Type: Grant
    Filed: September 28, 1983
    Date of Patent: November 26, 1985
    Assignee: ACR Electronics Inc.
    Inventor: Shiraz A. Dhanji
  • Nonaqueous secondary battery
    Patent number: 5487960
    Abstract: A nonaqueous secondary battery comprising a positive electrode and a negative electrode, in which a mixture of the positive electrode active material contains an acid containing at least one of P, B, Si, Mo, and W or a salt thereof. The battery has improved safety in case of abrupt temperature rise.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: January 30, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Mitsutoshi Tanaka
  • Positive active material composition for rechargeable battery, electrode including the same, and rechargeable battery including the same
    Patent number: 8221917
    Abstract: A positive active material composition for a rechargeable battery, a positive electrode including the same, and a rechargeable battery including the same, the positive active material composition including a positive active material and a surface-modified metal oxide.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: July 17, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dai-Hoe Lee, Takaya Saito, Hyun-Ki Jung, Min-Hee Kim
  • Alkaline Batteries
    Publication number: 20090305137
    Abstract: Alkaline batteries are provided, including an anode, a cathode, and a separator disposed between the anode and cathode. The cathode porosity is selected to optimize performance characteristics of the battery. In one aspect, an alkaline cell is provided that includes (a) an anode, (b) a cathode, comprising a cathode active material, wherein the cathode has a porosity of from about 25% to about 30%, and (c) a separator disposed between the cathode and the anode.
    Type: Application
    Filed: June 4, 2008
    Publication date: December 10, 2009
    Inventors: David L. Anglin, Alexander B. Shelekhin, Robert Yoppolo
  • Positive-electrode active material for alkaline secondary battery and an alkaline secondary battery
    Patent number: 6174624
    Abstract: A positive-electrode active material for alkaline secondary battery according to the invention has an &agr;-Ni(OH)2 crystal structure which incorporates therein manganese and a trivalent metal other than manganese.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: January 16, 2001
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Mutsumi Yano, Mitsunori Tokuda, Mitsuzou Nogami, Shin Fujitani, Koji Nishio
  • Positive electrode active material for lithium ion secondary battery, positive electrode for lithium ion secondary battery, lithium ion secondary battery, electronic device, and vehicle
    Patent number: 10720641
    Abstract: A positive electrode active material for a lithium ion secondary battery has a rock salt type structure represented by General Formula: LixTi2x-1Mn2-3xO (0.50<x<0.67)??(1) and has an average particle size of 0.5 ?m or less.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: July 21, 2020
    Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventor: Naoaki Yabuuchi
  • Lithium secondary battery for use in electric vehicle
    Publication number: 20030008207
    Abstract: Alithium secondary battery for use in electric vehicle, includes: a battery case, and an electricity-generating body including a positive electrode, a negative electrode, and a separator, the positive and the negative electrode being wound or laminated via the separator so that the positive electrode and negative electrode are not brought into direct contact with each other. Each single battery has a ratio (X/E) of battery output X (W) and battery energy E (Wh), of 2 to 36 or a product (R×E) of battery internal resistance R (m&OHgr;) and battery energy E (Wh), of 50 to 900 (m&OHgr;·Wh). The lithium secondary battery is used in an electric vehicle as combined batteries formed by connecting a required number of the single batteries in series.
    Type: Application
    Filed: September 5, 2002
    Publication date: January 9, 2003
    Applicant: NGK Insulators, Ltd.
    Inventors: Hiroshi Nemoto, Kenshin Kitoh
  • Primary alkaline battery containing bismuth metal oxide
    Publication number: 20080008937
    Abstract: Primary alkaline batteries containing pentavalent bismuth metal oxides are disclosed.
    Type: Application
    Filed: July 10, 2006
    Publication date: January 10, 2008
    Inventors: Cahit Eylem, Paul A. Christian, Yichun Wang, Joseph E. Sunstrom, In Tae Bae
  • Lithium ion battery containing an anode comprised of graphitic carbon nanofibers
    Publication number: 20020102461
    Abstract: A lithium ion secondary battery having an anode comprised of substantially crystalline graphitic carbon nanofibers composed of graphite sheets. The graphite sheets are preferably substantially perpendicular or parallel to the longitudinal axis of the carbon nanofiber. This invention also relates to the above-mentioned electrode for use in lithium ion secondary batteries.
    Type: Application
    Filed: December 6, 2000
    Publication date: August 1, 2002
    Inventors: R. Terry K. Baker, Nelly M. Rodriguez
  • LITHIUM ION SECONDARY BATTERY AND BATTERY SYSTEM
    Publication number: 20120034526
    Abstract: This lithium ion secondary battery includes a cathode (3) including multiple oxide containing lithium as a cathode active material and Li2MnSiO4 which is different from the cathode active material and which is mixed or blended into the cathode active material as a doping material of lithium ions, and an anode (2).
    Type: Application
    Filed: March 31, 2009
    Publication date: February 9, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Tomoyoshi Kurahashi
  • OLIVINE-BASED POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY USING SAME
    Publication number: 20120135290
    Abstract: Disclosed is an olivine-based positive active material for a rechargeable lithium battery and a rechargeable lithium battery using the same, wherein the olivine-based positive active material for a rechargeable lithium battery is represented the following Formula 1. LixMyM?zXO4-wBw??[Chemical Formula 1] Chemical Formula 1 has the same definitions as in the specification.
    Type: Application
    Filed: September 22, 2011
    Publication date: May 31, 2012
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Han-Eol Park, Sun-Hwa Kwon, Ji-Hyun Kim, Ki-Hyun Kim, Yong-Chan You, Yoon-Chang Kim
  • Alkaline Battery
    Publication number: 20040175616
    Abstract: An alkaline battery includes a cathode including lambda-manganese dioxide, an anode including zinc, a separator between the cathode and the anode, and an alkaline electrolyte contacting the anode and the cathode.
    Type: Application
    Filed: March 9, 2004
    Publication date: September 9, 2004
    Applicant: The Gillette Company
    Inventors: William L. Bowden, Klaus Brandt, Paul A. Christian, Zhiping Jiang
  • CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY INCLUDING SAME
    Publication number: 20130337327
    Abstract: The present invention relates to a cathode active material for a lithium secondary battery comprising: a core including a compound represented by chemical formula 1, and a shell including a compound represented by chemical formula 2, wherein the material composition of the core and the material composition of the shell are different; and a lithium secondary battery including the cathode active material for a lithium secondary battery.
    Type: Application
    Filed: November 17, 2011
    Publication date: December 19, 2013
    Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Yang-Kook Sun, Won-Gi Kim, Seung-Min Oh
  • ELECTRODE COMPOSITION, ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING THE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE ELECTRODE
    Publication number: 20110281166
    Abstract: An electrode composition containing a first conducting agent and a second conducting agent, an electrode for lithium secondary batteries, a method of manufacturing the electrode, and a lithium secondary battery including the electrode. The second conducting agent is an agglomerate formed of a conducting material and a fluorine-based polymer.
    Type: Application
    Filed: December 30, 2010
    Publication date: November 17, 2011
    Inventors: Chae-Woong Cho, Woon-Suk Jang, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi
  • Coin shaped lithium battery
    Patent number: 5804333
    Abstract: A coin-shaped lithium battery is disclosed. The coin-shaped lithium battery comprises a battery can containing therein an anode pellet composed of lithium or lithium alloy and a cathode pellet which are arranged to face each other with a separator provided between the pellets. At least one of the anode pellet and the cathode pellet has its central part swollen to form a curved surface. The battery can is elastically deformed to be aligned with the curved surface. In the coin-shaped lithium battery, total height of the anode pellet and the cathode pellet in outer rim part is smaller than total height in central part by 4 to 12%.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: September 8, 1998
    Assignee: Sony Corporation
    Inventors: Masatsugu Shioda, Koichi Miyoda
  • NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME
    Publication number: 20140050983
    Abstract: In an aspect, a negative active material for a rechargeable lithium battery that includes a silicon-based active material including a core including carbon and SiOx particles (0.5?x?1.5); and a coating layer surrounding the core, and a negative electrode and a rechargeable lithium battery including the same are provided.
    Type: Application
    Filed: March 13, 2013
    Publication date: February 20, 2014
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Bong-Chull Kim, Jae-Hou Nah, Joon-Sup Kim, Kyeong-Min Jeong
  • Lithium managanese oxide, cathode material for lithium secondary battery, cathode, lithium secondary battery and process for manufacturing lithium manganese oxide
    Publication number: 20020009645
    Abstract: The invention provides a lithium manganese oxide spinel suited as a cathode active material for lithium ion secondary batteries showing excellent high-temperature cycling behavior.
    Type: Application
    Filed: April 30, 2001
    Publication date: January 24, 2002
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koji Shima, Akira Utsunomiya, Yasushi Tsurita
  • Battery
    Publication number: 20090258297
    Abstract: Primary alkaline batteries include cathodes containing manganese dioxide and anodes including zinc. The weight ratio of the manganese dioxide to zinc is relatively low because the manganese dioxide has a relatively high oxygen content.
    Type: Application
    Filed: April 15, 2008
    Publication date: October 15, 2009
    Inventors: Stuart M. Davis, Nikolay K. Iltchev, Gary A. Miller
  • Cathode materials for secondary (rechargeable) lithium batteries
    Patent number: 5910382
    Abstract: The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion (PO.sub.4).sup.3- as at least one constituent for use as electrode material for alkali-ion rechargeable batteries.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: June 8, 1999
    Assignee: Board of Regents, University of Texas Systems
    Inventors: John B. Goodenough, Akshaya K. Padhi, K. S. Nanjundaswamy, Christian Masquelier
  • LITHIUM ION SECONDARY BATTERY ACTIVE MATERIAL, LITHIUM ION SECONDARY BATTERY ELECTRODE, LITHIUM ION SECONDARY BATTERY, ELECTRONIC DEVICE, ELECTRONIC POWER TOOL, ELECTRIC VEHICLE, AND POWER STORAGE SYSTEM
    Publication number: 20140017566
    Abstract: A lithium ion secondary battery includes: a positive electrode; a negative electrode; and an electrolytic solution, at least one of the positive electrode and the negative electrode being capable of storing and releasing lithium ions, and containing an active material that satisfies predetermined conditions.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: SONY CORPORATION
    Inventors: Asuki Yanagihara, Satoshi Fujiki, Yosuke Hosoya, Guohua Li