Iron Component Is Active Material Patents (Class 429/221)
  • Patent number: 10439212
    Abstract: Composite cathode materials are provided herein. Disclosed composite cathode materials include those comprising an aluminum borate coating. Systems making use of the cathode active materials are also described, such as electrochemical cells and electrodes for use in electrochemical cells. Methods for making and using the composite cathode materials are also disclosed.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: October 8, 2019
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Ratnakumar V. Bugga, Candace S. Seu
  • Patent number: 10439213
    Abstract: The invention provides a nitrogen-doped graphene coated nano sulfur positive electrode composite material, a preparation method, and an application thereof. The composite material includes: an effective three-dimensional conductive network formed by overlapping of nitrogen-doped graphenes, and nano sulfur particles coated by nitrogen doped graphene layers evenly. The preparation method includes: dispersing nitrogen-doped graphenes in a liquid-phase reaction system including at least sulfur source and acid, and depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the positive electrode composite material. The positive electrode composite material of the invention has a high conductivity, a high sulfur utilization rate, and a high rate, thereby restraining the dissolution and shuttle effect in the lithium sulfur batteries, and enhancing the cyclic performance of the batteries.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: October 8, 2019
    Assignee: SUZHOU INSTITUTE OF NANO-TECH AND NANO-BIONICS, CHINESE ACADEMY OF SCIENCE
    Inventors: Yuegang Zhang, Yongcai Qiu, Wanfei Li, Guizhu Li, Yuan Hou, Meinan Liu, Lisha Zhou, Fangmin Ye, Hongfei Li
  • Patent number: 10430003
    Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: October 1, 2019
    Assignee: DONGWOO FINE-CHEM CO.. LTD.
    Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park
  • Patent number: 10431826
    Abstract: According to the present invention, a nonaqueous electrolyte secondary battery that includes a positive electrode, a negative electrode and a nonaqueous electrolyte is provided. The positive electrode has an operation upper limit potential of 4.3 V or more based on metal lithium and includes a positive electrode active material and an inorganic phosphate compound that has ion conductivity. The inorganic phosphate compound is in a particle state. A ratio of particles having a particle size of 20 ?m or more is 1% by volume or less when an entirety of the inorganic phosphate compound is set to 100% by volume. Further, a ratio of particles having a particle size of 10 ?m or more may be 10% by volume or less when an entirety of the inorganic phosphate compound is set to 100% by volume.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 1, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshitomo Takebayashi
  • Patent number: 10411250
    Abstract: According to one embodiment, a nonaqueous electrolyte battery including a negative electrode, a positive electrode, and a nonaqueous electrolyte is provided. The negative electrode contains a negative electrode active material. The positive electrode contains a positive electrode active material. The negative electrode active material contains a titanium-containing composite oxide. The positive electrode active material contains secondary particles of a first composite oxide and primary particles of a second composite oxide. The first composite oxide is represented by a general formula LiMn1?x?yMgxFeyPO4 (0<x?0.1, 0<y?0.3). The second composite oxide is represented by a general formula LiCo1?a?bNiaMnbO2 (0?a, b?0.5).
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: September 10, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keigo Hoshina, Yasunobu Yamashita, Yoshiyuki Isozaki, Norio Takami
  • Patent number: 10403891
    Abstract: A positive electrode material includes an active material represented by Li2Mn(1?2x)NixMoxO3 (where 0<x<0.4).
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: September 3, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuko Asano, Kensuke Nakura
  • Patent number: 10403447
    Abstract: The disclosure relates to a lithium storage element containing a positive electrode that contains a lithium compound other than an active material, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions, for which an active material is applied on both surfaces of a nonporous positive electrode power collector, and a negative electrode active material capable of storing and releasing lithium ions is applied on both surfaces of a nonporous negative electrode power collector.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: September 3, 2019
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Kazuteru Umetsu, Takeshi Kamijo, Yuichiro Hirakawa, Keita Kusuzaka, Nobuhiro Okada, Taku Suetomi
  • Patent number: 10374229
    Abstract: A positive electrode active material for alkali-ion secondary batteries is provided which contains 20-55% of Na2O+Li2O, 10-60% of CrO+FeO+MnO+CoO+NiO, and 20-55% of P2O5+SiO2+B2O3 in terms of oxide-equivalent mol % and includes 50 mass % or more of an amorphous phase. According to the present invention, it is possible to provide a positive electrode active material for alkali-ion secondary batteries that enables high energy density and is excellent in the charge and discharge characteristics.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: August 6, 2019
    Assignees: NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY, NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Tsuyoshi Honma, Takayuki Komatsu, Satoshi Nakata, Hideo Yamauchi, Fumio Sato
  • Patent number: 10361423
    Abstract: Provided herein is a method for preparing a battery electrode based on an aqueous slurry. The method disclosed herein has the advantage that an aqueous solvent can be used in the manufacturing process, which can save process time and facilities by avoiding the need to handle or recycle hazardous organic solvents. Therefore, costs are reduced by simplifying the total process. In addition, the batteries having the electrodes prepared by the method disclosed herein show impressive energy retention.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: July 23, 2019
    Assignee: GRST INTERNATIONAL LIMITED
    Inventors: Peihua Shen, Sing Hung Eric Wong
  • Patent number: 10355251
    Abstract: A rolled electrode assembly having a positive electrode plate and a negative electrode plate is housed in a prismatic outer body having as mouth together with non-aqueous electrolyte, and the mouth of the prismatic outer body is sealed by a sealing plate made of metal. The rolled electrode assembly is housed in the prismatic outer body, with the outer surface of the rolled electrode assembly covered by an insulating sheet except for the outer surface facing the sealing plate. The arithmetic mean roughness (Sa) of at least one surface of the insulating sheet disposed between the rolled electrode assembly and the prismatic outer body is 0.3 ?m or more.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: July 16, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takuya Yamawaki, Eiji Okutani
  • Patent number: 10298043
    Abstract: A lithium ion secondary battery includes a positive electrode including a positive electrode active material layer containing lithium iron phosphate, a negative electrode including a negative electrode active material layer containing graphite, and an electrolyte including a lithium salt and a solvent including ethylene carbonate and diethyl carbonate between the positive electrode and the negative electrode. When the battery temperature of the lithium ion secondary battery or the temperature of an environment in which the lithium ion secondary battery is used is T and given temperatures are T1 and T2 (T1<T2), in the case where T<T1, constant current charge is performed until voltage reaches a given value and then constant voltage charge is performed; in the case where T1?T<T2, only constant current charge is performed; and in the case where T2?T, charge is not performed.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: May 21, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Minoru Takahashi, Junpei Momo, Hiroyuki Miyake, Kei Takahashi
  • Patent number: 10290856
    Abstract: A cathode material including an aggregate formed by aggregating active material particles, in which the active material particle is a particle including a cathode active material as a formation material and a carbonaceous material is provided on a surface of the particle, a ratio between a weight ratio of carbon contained in the aggregate to a BET specific surface area of the cathode material is in a range of 0.08 to 0.2, a tap density is in a range of 0.9 g/cm3 to 1.5 g/cm3, and an oil absorption amount for which N-methyl-2-pyrrolidone is used is 70 cc/100 g or less.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: May 14, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Masataka Oyama, Satoru Oshitari, Ryuuta Yamaya
  • Patent number: 10290869
    Abstract: A layered composite composition having a general chemical formula of Li?-xADx(Mn?-y-?AlyNi?-?Co?-zAEDz)O2, wherein AD is an alkaline dopant for Li, AED is an alkaline earth dopant for Co or Ni, and Al is a dopant for Mn or Ni, and at least two of AD, AED, and Al are present in the composition, and the dopants, if present, are at an amount that does not result in the formation of new phase.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: May 14, 2019
    Inventors: Richard L. Axelbaum, Miklos Lengyel
  • Patent number: 10276858
    Abstract: The present invention aims to provide an electrode for lithium ion batteries which exhibits excellent electrical conductivity even if its thickness is large. The electrode for lithium ion batteries of the present invention includes a first main surface to be located adjacent to a separator of a lithium ion battery and a second main surface to be located adjacent to a current collector of the lithium ion battery. The electrode has a thickness of 150 to 5000 ?m. The electrode contains, between the first main surface and the second main surface, a conductive member (A) made of an electronically conductive material and a large number of active material particles (B). At least part of the conductive member (A) forms a conductive path that electrically connects the first main surface to the second main surface. The conductive path is in contact with the active material particles (B) around the conductive path.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: April 30, 2019
    Assignees: SANYO CHEMICAL LTD., NISSAN MOTOR CO., LTD.
    Inventors: Yusuke Mizuno, Yasuhiro Shindo, Yasuhiro Tsudo, Kenichi Kawakita, Yuki Kusachi, Yasuhiko Ohsawa, Hajime Satou, Hiroshi Akama, Hideaki Horie
  • Patent number: 10267761
    Abstract: A NO2 gas sensing element includes an electrolyte, a reference electrode in contact with the electrolyte, and a sensing electrode selective to NO2 in contact with the electrolyte spaced apart from the reference electrode. The NO2 selective sensing electrode includes an oxide material comprising: (1) a mixed oxide according to the formula (Mn2-u-v-wCovMgwSiO4-u)+?(Mn3Al2Si3O12)+?(SiO2), wherein 0?(u+v+w)?2.0, 0???0.5, and 0???0.1; (2) a mixed oxide according to the formula (Mn2-x-y-zCoyMgzSiO4-x)+?(ZnO)+?(SiO2), wherein 0?(u+v+w)?2.0, 0???0.5, and 0???0.1; or combinations of mixed oxides (1) and (2).
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: April 23, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Da Yu Wang, David M. Racine, Yao Sheng, Alfredo Ibarra Covarrubias
  • Patent number: 10266410
    Abstract: A preparation method of battery composite material includes steps of providing a manganese-contained compound, phosphoric acid, a lithium-contained compound, a carbon source, and deionized water; processing a reaction of the manganese-contained compound, the phosphoric acid, and a portion of the deionized water to produce a first product; placing the first product at a first temperature for at least a first time period to produce a first precursor, wherein the chemical formula of the first precursor is written by Mn5(HPO4)2(PO4)2(H2O)4; and processing a reaction of at least the first precursor, the lithium-contained compound, and another portion of the deionized water, adding the carbon source, and then calcining to produce battery composite material. Therefore, the preparation time is shortened, the energy consuming is reduced, the phase forming of the precursor is more stable, and the advantages of reducing the cost of preparation and enhancing the quality of products are achieved.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: April 23, 2019
    Assignee: ADVANCED LITHIUM ELECTROCHEMISTRY CO., LTD.
    Inventors: Hsiang-Pin Lin, Han-Wei Hsieh, An-Feng Huang, Chun-Ming Huang
  • Patent number: 10243210
    Abstract: A cathode active material includes a core capable of intercalating and deintercalating lithium ions; and a coating layer on at least a portion of the core, wherein the coating layer includes a composite including a metal oxide compound and a phosphate compound, the metal oxide compound is at least one compound selected from a lithium metal oxide and a metal oxide, the phosphate compound is at least one compound selected from a lithium phosphate, a lithium metal phosphate, and a metal phosphate, and a weight ratio of the metal oxide compound to the phosphate compound is from greater than 0 to about 1.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: March 26, 2019
    Assignees: SAMSUNG ELECTRONICS CO. LTD., SAMSUNG SDI CO., LTD.
    Inventors: Junho Park, Kwangjin Park, Dongwook Shin, Jaegu Yoon, Sukgi Hong
  • Patent number: 10217999
    Abstract: A rechargeable lithium battery includes a negative electrode and a positive electrode, where a specific surface area per a unit area of the positive electrode is twice to seven times larger than a specific surface area per a unit area of the negative electrode. The rechargeable lithium battery has high rate capability and improved cycle-life characteristics.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: February 26, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jung-Woo An, Jeong-Woo Han
  • Patent number: 10193143
    Abstract: A negative electrode active material for an electricity storage device of the present invention includes TiO2, Na2O, and a network-forming oxide.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: January 29, 2019
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventor: Hideo Yamauchi
  • Patent number: 10193139
    Abstract: Provided herein are energy storage devices comprising a first electrode comprising a layered double hydroxide, a conductive scaffold, and a first current collector; a second electrode comprising a hydroxide and a second current collector; a separator; and an electrolyte. In some embodiments, the specific combination of device chemistry, active materials, and electrolytes described herein form storage devices that operate at high voltage and exhibit the capacity of a battery and the power performance of supercapacitors in one device.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: January 29, 2019
    Assignee: The Regents of the University of California
    Inventors: Maher F. El-Kady, Richard B. Kaner, Mir Fazlollah Mousavi
  • Patent number: 10141605
    Abstract: A rechargeable battery cell having a specific combination of anode, cathode and electrolyte formulation is provided. The electrolyte formulation includes an additive system and a salt system. The additive system includes a first additive containing a sulfonyl group, an anti-gassing agent, and a second additive. The salt system includes a lithium salt and a co-salt. The disclosed electrolyte formulation has reduced gassing and improved performance over a wide temperature range.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: November 27, 2018
    Assignee: A123 Systems, LLC
    Inventors: Leslie J. Pinnell, Christopher Campion, Antoni S. Gozdz, Jeong Ju Cho
  • Patent number: 10096833
    Abstract: According to one embodiment, an electrode is provided. This electrode includes a current collector and an electrode layer formed on the current collector. The electrode layer contains an active material represented by LiMn1-x-yFexAyPO4 (where 0<x?0.3, 0?y?0.1, and A is at least one selected from the group consisting of Mg, Ca, Al, Ti, Zn, and Zr). A pore diameter appearing at highest frequency in pore diameter distribution of the electrode layer obtained by mercury porosimetry falls within a range of 10 nm to 50 nm. A pore specific surface area of the electrode layer is from 12 m2/g to 30 m2/g.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: October 9, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo Hoshina, Yoshiyuki Isozaki, Hiroki Inagaki, Norio Takami
  • Patent number: 10090517
    Abstract: A cathode material for a lithium-ion secondary battery includes a cathode material A which includes central particles of a cathode active material represented by LixAyMzPO4 and a carbonaceous film with which surfaces of the central particles are coated and a cathode material B which is represented by LixAyMzPO4 and is made of primary particles of a cathode active material having an olivine structure.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: October 2, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Masataka Oyama, Takao Kitagawa
  • Patent number: 10074855
    Abstract: An electrode for a lithium secondary battery including a silicon-based alloy having an expansion coefficient of 10% or greater and an electrochemically inactive whisker, and a lithium secondary battery using the electrode for a lithium secondary battery.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: September 11, 2018
    Assignees: Samsung SDI Co., Ltd., SNU R&DB Foundation
    Inventors: Jae-Hyuk Kim, Young-Ugk Kim, Seung-Uk Kwon, Soon-Sung Suh, Hee-Young Chu, Duk-Hyoung Yoon, Chang-Ui Jeong, Yo-Han Park, Kyu-Hwan Oh, Seoung-Bum Son, Seul-Cham Kim, Chan-Soon Kang
  • Patent number: 10050267
    Abstract: The purpose of the present invention is to provide a positive-electrode active material for non-aqueous electrolyte secondary batteries that is capable of achieving both a high capacity and a high output. This positive-electrode active material contains a lithium-nickel composite oxide represented by the general formula: LibNi1-x-yCoxMyO2 wherein M represents at least one element selected from Al, Ti, Mn and W, b is 0.95?b?1.03, x is 0<x?0.15, y is 0<y?0.07, and x and y is x+y?0.16, wherein c-axis length of the lithium-nickel composite oxide is 14.185 angstrom or greater as determined by a Rietveld analysis of X-ray diffraction.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: August 14, 2018
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Tomoko Nakayama, Masanori Takagi, Kensaku Mori
  • Patent number: 10033030
    Abstract: Variations of the invention provide an improved aluminum battery consisting of an aluminum anode, a non-aqueous electrolyte, and a cathode comprising a metal oxide, a metal fluoride, a metal sulfide, or sulfur. The cathode can be fully reduced upon battery discharge via a multiple-electron reduction reaction. In some embodiments, the cathode materials are contained within the pore volume of a porous conductive carbon scaffold. Batteries provided by the invention have high active material specific energy densities and good cycling stabilities at a variety of operating temperatures.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: July 24, 2018
    Assignee: HRL Laboratories, LLC
    Inventors: John J. Vajo, Adam F. Gross, Ping Liu, Jocelyn Hicks-Garner, Elena Sherman, Sky Van Atta
  • Patent number: 10020502
    Abstract: A positive active material for a rechargeable lithium battery includes a lithium intercalation compound; and lithium titanium oxide represented by Chemical Formula 1 on the surface of the lithium intercalation compound surface. Li4-xMxTiyO12-z.??Chemical Formula 1 In the Chemical Formula 1, 0<x?3, 1?y?5, ?0.3?z?0.3, and M is an element selected from Mg, Al, Ga, La, Tb, Gd, Ce, Pr, Nd, Sm, Ba, Sr, Ca, and combinations thereof.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: July 10, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-Hyun Shim, Ki-Soo Lee, Ho Kim, Jae-Han Lee, Se-Hee Lee, Hyeon-Ah Ju, Joo-Han Song, Yoon-Hee Lee
  • Patent number: 10020499
    Abstract: The present invention relates to a method for preparing a lithium iron phosphate nanopowder coated with carbon, including the steps of (a) preparing a mixture solution by adding a lithium precursor, an iron precursor and a phosphorus precursor in a glycerol solvent, (b) putting the mixture solution into a reactor and reacting to prepare amorphous lithium iron phosphate nanoseed particle, and (c) heat treating the lithium iron phosphate nanoseed particle thus to prepare the lithium iron phosphate nanopowder coated with carbon on a portion or a whole of a surface of a particle, and a lithium iron phosphate nanopowder coated with carbon prepared by the above method. The lithium iron phosphate nanopowder coated with carbon having controlled particle size and particle size distribution may be prepared in a short time by performing two simple steps.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: July 10, 2018
    Assignee: LG Chem, Ltd.
    Inventors: In Kook Jun, Seung Beom Cho, Myoung Hwan Oh, Wook Jang
  • Patent number: 10008716
    Abstract: A multilayer electrode suitable for use in a secondary battery is disclosed. The major active component of one layer is different to a major active component of an adjacent layer. The use of layered electrodes improves both the capacity retention and cycle life of batteries including such layered electrodes.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: June 26, 2018
    Assignee: Nexeon Limited
    Inventors: Mamdouh Abdelsalam, Fazil Coowar, William Macklin
  • Patent number: 9997784
    Abstract: A process for producing an anode layer, comprising: (a) dispersing catalyst metal-coated Si particles, graphene sheets, and an optional blowing agent in a liquid medium to form a graphene/Si dispersion; (b) dispensing and depositing the dispersion onto a supporting substrate to form a wet layer and removing the liquid medium from the wet layer to form a dried layer of graphene/Si mixture material; and (c) exposing the dried layer to a high temperature environment, from 300° C. to 2,000° C., to induce volatile gas molecules from graphene sheets or to activate the blowing agent for producing the graphene foam and, concurrently, to enable a catalyst metal-catalyzed growth of multiple Si nanowires emanated from Si particles as a feed material in pores of the foam to form the anode layer; wherein the Si nanowires have a diameter of 5-100 nm and a length-to-diameter aspect ratio of at least 5.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: June 12, 2018
    Assignee: Nanotek Instruments, Inc.
    Inventors: Yu-Sheng Su, Jun Yin, Qing Fang, Aruna Zhamu, Bor Z. Jang
  • Patent number: 9985284
    Abstract: In an example of a method for making a sulfur-based positive electrode active material, a carbon layer is formed on a sacrificial nanomaterial. The carbon layer is coated with titanium dioxide to form a titanium dioxide layer. The sacrificial nanomaterial is removed to form a hollow material including a hollow core surrounded by a carbon and titanium dioxide double shell. Sulfur is impregnated into the hollow core.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: May 29, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gayatri V. Dadheech, Xingcheng Xiao, Mei Cai
  • Patent number: 9960421
    Abstract: The present invention relates to a sulfur-containing composite with a core-shell structure for lithium-sulfur battery, wherein the substrate of the core contains macropores and/or mesopores and optionally micropores, and the substrate of the shell is a microporous coating layer; as well as a process for preparing said sulfur-containing composite, an electrode material and a lithium-sulfur battery comprising said sulfur-containing composite.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 1, 2018
    Assignees: Robert Bosch GmbH, Institute of Chemistry, Chinese Academy of Science
    Inventors: Yaxia Yin, Longjie Zhou, Bernd Schumann, Juan Zhang, NaHong Zhao, Yuguo Guo, Huan Ye
  • Patent number: 9960416
    Abstract: The present invention provides a positive electrode for a non-aqueous electrolyte secondary battery in which the charge/discharge rate of a secondary battery is increased by increasing the discharge/discharge rate of the positive electrode as a result of increasing the rate of incorporation and release of lithium ions in olivine-type phosphorous complex compound particles, a non-aqueous electrolyte secondary battery provided with this positive electrode for a non-aqueous electrolyte secondary battery, and a battery module provided with this non-aqueous electrolyte secondary battery.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: May 1, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tomitaro Hara, Takao Fukunaga, Takayasu Iguchi, Takao Kitagawa, Yoshitaka Yamamoto
  • Patent number: 9932235
    Abstract: A preparation method of a battery composite material includes steps of providing phosphoric acid, manganese carbonate, water and a first reactant; processing a reaction of the phosphoric acid, the manganese carbonate and the water to produce a first product; calcining the first product to produce a precursor, which is written by Mn2P2O7; processing a reaction of the precursor and at least the first reactant to get a reaction mixture, and then calcining the reaction mixture to produce the battery composite material. As a result, the present invention achieves the advantages of reducing the times of the reduction-oxidation reaction, so that the stability of the processes is enhanced, and the difficulty of the processes is reduced.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: April 3, 2018
    Assignee: Advanced Lithium Electrochemistry Co., Ltd.
    Inventors: Wen-Chao Lee, Hsiang-Pin Lin, Han-Wei Hsieh
  • Patent number: 9935313
    Abstract: Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: April 3, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takuya Miwa, Nobuhiro Inoue, Kuniharu Nomoto, Junpei Momo
  • Patent number: 9922744
    Abstract: A method of making a composition, comprising: (1) oxidizing graphite to graphite oxide using at least one sulfur-containing reagent, (2) exfoliating the graphite oxide to form graphene sheets, and (3) blending the graphene sheets with elemental sulfur and/or at least one organosulfur compound, wherein the graphene sheets comprise at least about 1 weight percent sulfur. The composition may be made into an electrode that may be used in batteries, including lithium sulfur batteries.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: March 20, 2018
    Inventor: John S. Lettow
  • Patent number: 9923204
    Abstract: A method for making a cathode active material of a lithium ion battery is disclosed. In the method, LiMPO4 particles and LiNPO4 particles are provided. The LiMPO4 particles and LiNPO4 particles both are olivine type crystals belonged to a pnma space group of an orthorhombic crystal system, wherein M represents Fe, Mn, Co, or Ni, N represents a metal element having a +2 valence, and N is different from M. The LiMPO4 particles and the LiNPO4 particles are mixed together to form a precursor. The precursor is calcined to form LiMxN1-xPO4 particles, wherein 0<x<1.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: March 20, 2018
    Assignees: Jiangsu Huadong Institute of Li-ion Battery Co. Ltd., Tsinghua University
    Inventors: Zhong-Jia Dai, Xiang-Ming He, Li Wang, Jian-Jun Li, Yu-Ming Shang, Jian Gao, Yao-Wu Wang
  • Patent number: 9905847
    Abstract: In an example of a method for making an electrode active material, a sacrificial layer is formed on a nanomaterial. Carbon is coated on the sacrificial layer to form a carbon layer. Titanium dioxide is coated on the carbon layer to form a titanium dioxide layer. The sacrificial layer is removed to form a void between the nanomaterial and the carbon layer.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: February 27, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gayatri V. Dadheech, Xingcheng Xiao, Mei Cai
  • Patent number: 9899678
    Abstract: An object is to improve the characteristics of a power storage device such as a charging and discharging rate or a charge and discharge capacity. The grain size of particles of a positive electrode active material is nano-sized so that a surface area per unit mass of the active material is increased. Specifically, the grain size is set to greater than or equal to 10 nm and less than or equal to 100 nm, preferably greater than or equal to 20 nm and less than or equal to 60 nm. Alternatively, the surface area per unit mass is set to 10 m2/g or more, preferably 20 m2/g or more. Further, the crystallinity of the active material is increased by setting an XRD half width to greater than or equal to 0.12° and less than 0.17°, preferably greater than or equal to 0.13° and less than 0.16°.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: February 20, 2018
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Takahiro Kawakami, Masaki Yamakaji
  • Patent number: 9893386
    Abstract: The invention provides a solid secondary battery system including a solid secondary battery having a cathode active material layer, an anode active material layer, and a solid electrolyte layer formed between the cathode active material layer and the anode active material layer, and an overdischarge processing unit for discharging the solid secondary battery until a SOC of the solid secondary battery becomes less than 0%.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: February 13, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigenori Hama, Koji Kawamoto, Masashi Kodama
  • Patent number: 9840416
    Abstract: A method for synthesizing nano-lithium iron phosphate without water of crystallization in aqueous phase at normal pressure, which is part of a preparation method for a lithium ion positive electrode material. The preparation process comprises the following steps: preparing lithium phosphate, preparing an aqueous phase suspension of lithium phosphate, preparing a ferrous salt solution, preparing nano-lithium iron phosphate without water of crystallization, and recovering and recycling lithium in a mother solution of lithium iron phosphate. The present invention has the beneficial effects of mild reaction conditions, a short time, low energy consumption, reduced costs due to the recovery and recycling of lithium in the mother solution, stable batches, uniform and controllable strength, and being conducive to industrial production.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: December 12, 2017
    Assignee: General Lithium Corporation
    Inventors: Nanping Li, Guoduan He, Qin Zhang, Yanfeng Jiang
  • Patent number: 9825310
    Abstract: The present invention relates to an electrochemical cell comprising an anode of a Group IA metal and a cathode of a composite material prepared from an aqueous mixture of iron sulfate, nickel sulfate, and sulfur. The cathode material of the present invention provides for a lithium electrochemical cell having an increased operating voltage and power performance with high discharge capacity as compared to a lithium cell comprising nickel disulfide cathode material. In addition, the cathode material of the present invention exhibits a smaller initial irreversible voltage loss as compared to iron disulfide. This makes the cathode material of the present invention particularly useful for implantable medical applications.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: November 21, 2017
    Assignee: Greatbatch Ltd.
    Inventors: Marcus J. Palazzo, Ashish Shah
  • Patent number: 9812735
    Abstract: A lithium ion secondary battery comprising: a positive electrode comprising a positive electrode active material; a negative electrode comprised mainly of a material capable of storing and releasing lithium ions; and an electrolytic liquid, the positive electrode active material being a lithium-iron-manganese complex oxide having a layered rock salt structure and represented by a chemical formula: LixFesM1(z-s)M2yO2-? wherein 1.05?x?1.32, 0.06?s?0.50, 0.06?z?0.50, 0.33?y?0.63, and 0???0.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: November 7, 2017
    Assignees: SEKISUI CHEMICAL CO., LTD., NEC CORPORATION
    Inventors: Masaru Heishi, Takuya Toyokawa, Katsumi Maeda, Noriyuki Tamura, Kentaro Nakahara
  • Patent number: 9799915
    Abstract: Circuits and methods for putting into service a lithium ion battery including a first charging step under a current of at most a few tens of microamperes per square centimeter for a plurality of hours.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: October 24, 2017
    Assignee: STMICROELECTRONICS (TOURS) SAS
    Inventors: Severin Larfaillou, Delphine Guy-Bouyssou
  • Patent number: 9796589
    Abstract: Disclosed is a method for manufacturing lithium metal phosphate (LMP) having, as a precursor, crystalline iron phosphate salt having a (meta)strengite structure or metal-doped crystalline iron phosphate salt having a (meta)strengite structure, the method comprising the steps of: mixing a lithium raw material with crystalline iron phosphate salt in a slurry phase or a cake phase; and heat-treating the mixture. The method, by mixing a lithium (Li) raw material and a carbon (C) coating material with crystalline iron phosphate salt in a slurry phase or a cake phase, allows elements such as Li, Fe, P and C to be homogeneously mixed, and then, by having the elements dried simultaneously, enables manufacturing of high-quality LMP. Therefore, the present invention is not only capable of providing convenience during the manufacturing process for lithium metal phosphate, but also capable of providing a lithium secondary battery positive electrode active material having excellent battery characteristics.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: October 24, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyun A Song, Dong Gyu Chang, Jong Min Kim, Jae Seung Shin
  • Patent number: 9780424
    Abstract: The invention relates to a rechargeable battery and a method to operate a rechargeable battery having high efficiency and high energy density for storing energy. The battery stores electrical energy in the bonds of carbon and oxygen atoms by converting carbon dioxide into solid carbon and oxygen.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: October 3, 2017
    Assignee: Danmarks Tekniske Universitet
    Inventors: Christopher Ronald Graves, Mogens Bjerg Mogensen
  • Patent number: 9774037
    Abstract: A positive electrode composition for a non-aqueous electrolyte secondary battery includes a lithium transition metal composite oxide represented by a formula LiaNi1-x-yCoxMnyMzO2, wherein 1.00?a?1.50, 0<x?0.50, 0<y?0.50, 0.00?z?0.02, 0.40?x+y?0.70, M is at least one element selected from the group consisting of Zr, Ti, Mg, Ta, Nb and Mo, and a boron compound that at least contains boron and oxygen.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: September 26, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Atsushi Takeoka, Yu Nishita
  • Patent number: 9761864
    Abstract: Disclosed are a cathode active material for high voltage lithium secondary batteries and a lithium secondary battery including the same and, more particularly, the present invention relates to a cathode active material for lithium secondary batteries that includes a lithium transition metal oxide having a lithium molar fraction of greater than 1, containing a relative excess of nickel, and having a composition represented by Formula 1 below, wherein the lithium transition metal oxide has a Li2MnO3-like structure phase: Li1+aNibCocMn1?(a+b+c+d)MdO2-tAt??(1) wherein 0.05?a?0.2, 0.4?b?0.7, 0.1?c?0.4, 0?d?0.1, and 0?t<0.2; M is at least one divalent or trivalent metal; and A is at least one monovalent or divalent anion.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: September 12, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Hyeokmoo Lee, Jae Hyun Lee, Su Rim Lee, Song Taek Oh, JungSeok Choi, Ji Hye Park
  • Patent number: 9748565
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, wherein the positive electrode includes a positive electrode current collector and a positive electrode material mixture layer formed on one or both sides of the positive electrode current collector, the positive electrode material mixture layer has a thickness greater than 80 ?m per side of the positive electrode current collector, the positive electrode material mixture layer includes a positive electrode active material, the positive electrode active material is composed of secondary particles formed by aggregation of primary particles, the secondary particles have an average particle size of 6 ?m or less, and, when diffraction-line integrated intensities of the (003) plane and the (104) plane in an X-ray diffraction chart of the positive electrode material mixture layer are I003 and I104, respectively, the ratio I003/I104 of the integrated intensities is 1.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: August 29, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Tatsunori Yokote, Mitsuhiro Kishimi
  • Patent number: 9748555
    Abstract: A Ni—Mn composite oxalate powder is provided. The Ni—Mn composite oxalate powder includes a plurality of biwedge octahedron particles represented by the general formula: NiqMnxCoyMzC2O4.nH2O, wherein q+x+y+z=1, 0<q, x<1, 0?y<1, 0?z<0.15, 0?n?5, and M is at least one of Mg, Sr, Ba, Cd, Zn, Al, Ga, B, Zr, Ti, Ca, Ce, Y, Nb, Cr, Fe and V. The above powder may be further calcined with a lithium salt to form a lithium transition metal oxide powder for use as a positive electrode material in lithium ion-batteries.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: August 29, 2017
    Assignees: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, NATIONAL TAIWAN UNIVERSITY
    Inventors: Hung-Chun Wu, Yu-Ting Chen, Nae-Lih Wu, Wen-Chin Chen, Shih-Chieh Liao, Yih-Chyng Wu