Lithium Patents (Class 423/179.5)
  • Patent number: 10443111
    Abstract: The present invention provides a method for removing iron from an iron-containing solution containing an iron ion, comprising adding a lithium ion battery cathode material containing manganese to an acidic sulfuric acid solution to obtain a cathode material-containing solution, and then precipitating a manganese ion as manganese dioxide in a mixed solution obtained by mixing the iron-containing solution with the cathode material-containing solution while precipitating the iron ion contained in the iron-containing solution as a solid.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: October 15, 2019
    Assignee: JX NIPPON MINING & METALS CORPORATION
    Inventors: Junichi Arakawa, Junichi Ito, Takuya Yokota
  • Patent number: 10439200
    Abstract: The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: October 8, 2019
    Assignee: LILAC SOLUTIONS, INC.
    Inventors: David Henry Snydacker, Alexander John Grant, Ryan Ali Zarkesh
  • Patent number: 10333183
    Abstract: Examples are disclosed of methods to recycle positive-electrode material of a lithium-ion battery. One example provides a method including relithiating the positive-electrode material in a solution comprising lithium ions and an oxidizing agent, and after relithiating, separating the positive-electrode material from the solution.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: June 25, 2019
    Assignee: Hulico LLC
    Inventor: Steven E. Sloop
  • Patent number: 10280083
    Abstract: A method for producing complexed particles including obtaining a good solvent solution, by dissolving Li2S, and LiX (X is at least one selected from a group consisting of F, Cl, Br, and I) in a good solvent, and precipitating particles by contacting the good solvent solution with a poor solvent having a temperature at least 165° C. higher than the boiling point of the good solvent, to evaporate off the good solvent. The method further satisfies at least one of the following: (i) the good solvent solution being obtained by further dissolving H2S in the good solvent, and (ii) H2S being dissolved in the poor solvent.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: May 7, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takuo Yanagi
  • Patent number: 10246341
    Abstract: The present invention discloses a method for producing lithium carbonate from a low-lithium brine by separating magnesium and enriching lithium. A salt-lake brine is used as a raw material and is converted into halide salts through dehydration by evaporation and separation by crystallization; the halide salts are directly extracted using trialkyl phosphate or a mixture of trialkyl phosphate and monohydric alcohol, and an organic extraction phase as well as remaining halide salts are obtained after solid-liquid separation; reverse extraction is performed on the organic extraction phase to obtain a lithium-rich solution with a low magnesium-to-lithium ratio, and lithium carbonate is obtained after concentration and removal of magnesium by alkalization. The used solid-liquid extraction method is simple with no co-extraction agent used, and a solute distribution driving force is strong, unaffected by phase equilibrium of the brine extraction agent.
    Type: Grant
    Filed: October 21, 2017
    Date of Patent: April 2, 2019
    Assignee: XIANGTAN UNIVERSITY
    Inventors: Lixin Yang, Mi Fu, Yi Wang, Hongyu Qi, Yu Xu, Yali Liu, Yalin Gui, Jing He
  • Patent number: 10177365
    Abstract: The fabrication of robust interfaces between transition metal oxides and non-aqueous electrolytes is one of the great challenges of lithium ion batteries. Atomic layer deposition (ALD) of aluminum tungsten fluoride (AlWxFy) improves the electrochemical stability of LiCoO2. AlWxFy thin films were deposited by combining trimethylaluminum and tungsten hexafluoride. in-situ quartz crystal microbalance and transmission electron microscopy studies show that the films grow in a layer-by-layer fashion and are amorphous nature. Ultrathin AlWxFy coatings (<10 ?) on LiCoO2 significantly enhance stability relative to bare LiCoO2 when cycled to 4.4 V. The coated LiCoO2 exhibited superior rate capability (up to 400 mA/g) and discharge capacities at a current of 400 mA/g were 51% and 92% of the first cycle capacities for the bare and AlWxFy coated materials.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: January 8, 2019
    Assignee: UChicago Argonne, LLC
    Inventors: Anil U. Mane, Jeffrey W. Elam, Joong Sun Park, Jason R. Croy
  • Patent number: 10150056
    Abstract: The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from minerals, and recycled products.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: December 11, 2018
    Assignee: LILAC SOLUTIONS, INC.
    Inventor: David Henry Snydacker
  • Patent number: 10096821
    Abstract: An object of the present invention is to provide a lithium secondary battery that has a lithium nickel phosphate compound in the positive electrode, is free of collapse of the crystal structure even at high potentials and is resistant to cycle deterioration. The lithium secondary battery according to the present invention has a positive electrode active material. This positive electrode active material contains a lithium nickel phosphate compound that is represented by the general formula LiNi(1-x)MnxPO4 (wherein 0<x?0.15) and that has an orthorhombic crystal structure belonging to space group Cmcm.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: October 9, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Jun Yoshida
  • Patent number: 10090519
    Abstract: An electrochemical cell includes a cathode including an early transition metal fluoro-bronze; an anode including magnesium metal; and an electrolyte; wherein: the early transition metal fluoro-bronze is configured for intercalation of magnesium ions.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: October 2, 2018
    Assignees: UCHICAGO ARGONNE, LLC, NORTHWESTERN UNIVERSITY
    Inventors: Kenneth Poeppelmeier, John T. Vaughey, Jared Incorvati, Lindsay Fuoco
  • Patent number: 9988466
    Abstract: Disclosed in the present invention is a benzocrown ether graft polymer with a lithium isotopic separation effect and a preparation method thereof. The polymer is a benzocrown ether graft polymer formed by the linkage of chemical bonds, which takes the main chain of a polymer containing chloromethyl group, chloroformyl group or hydroxyl group as main chain, and takes a benzocrown ether as pendant group.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: June 5, 2018
    Assignee: TIANJIN POLYTECHNIC UNIVERSITY
    Inventors: Jianxin Li, Feng Yan, Benqiao He, Hong Wang
  • Patent number: 9988280
    Abstract: A process for reducing the amount of magnesium in a lithium-containing brine by adding an aqueous solution of KCl to the brine to precipitate at least some of the magnesium as carnallite salt is disclosed. Lithium salts prepared using this magnesium removal process are also disclosed.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: June 5, 2018
    Assignee: ROCKWOOD LITHIUM INC.
    Inventors: Andrew John Donaldson, Daniel Alfred Boryta
  • Patent number: 9963760
    Abstract: Provided is a backflow cascade novel process for producing a lithium-7 isotope. The process comprises an upper backflow section, an extraction section, an enrichment section, a lower backflow section, and a product acquiring section. Upper backflow phase-conversion liquid and lower backflow phase-conversion liquid are respectively added to the upper backflow section and the lower backflow section, and upper backflow phase-conversion liquid and lower backflow phase-conversion liquid of the lithium material are controlled; the product is precisely acquired in the product acquiring section; an organic phase is added to the upper backflow section, and is recycled in the lower backflow section. By means of cascade connection with a high-performance liquid separator, environmental protection, high efficiency, and multi-level enrichment of the lithium-7 isotope are achieved, and a high-abundance lithium-7 isotope product is obtained.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: May 8, 2018
    Assignee: Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences
    Inventors: Jinbo Hu, Wei Zhang, Weiqin Zheng, Guanghua Chen, Xiao Shi, Yongchang Xu, Honggui Lv, Chengye Yuan
  • Patent number: 9890053
    Abstract: There are provided methods for preparing lithium carbonate. For example, such methods can comprise reacting an aqueous composition comprising lithium hydroxide with CO2 by sparging the CO2 the said composition, thereby obtaining a precipitate comprising the lithium carbonate. The methods can also comprise inserting at least a portion of the precipitate into a clarifier and obtaining a supernatant comprising lithium bicarbonate and a solid comprising the lithium carbonate, separating the solid from the supernatant; and heating the supernatant at a desired temperature so as to at least partially convert the lithium bicarbonate into lithium carbonate.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: February 13, 2018
    Assignee: NEMASKA LITHIUM INC.
    Inventors: Guy Bourassa, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas
  • Patent number: 9748616
    Abstract: Lithium metal oxides may be regenerated under ambient conditions from materials recovered from partially or fully depleted lithium-ion batteries. Recovered lithium and metal materials may be reduced to nanoparticles and recombined to produce regenerated lithium metal oxides. The regenerated lithium metal oxides may be used to produce rechargeable lithium ion batteries.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: August 29, 2017
    Assignee: University of Calcutta
    Inventor: Nilanjan Deb
  • Patent number: 9702024
    Abstract: A method for the hydrometallurgical recovery of lithium from a lithium transition metal oxide containing fraction of used galvanic cells is disclosed. According to the method, the lithium transition metal oxide containing fraction is introduced into sulphuric acid or hydrochloric acid, and hydrogen peroxide is added in an amount that is at least stoichiometric relative to the transition metal content to be reduced of the lithium transition metal oxide-containing fraction.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: July 11, 2017
    Assignee: Rockwood Lithium GmbH
    Inventors: David Wohlgemuth, Mark Andre Schneider, Rebecca Spielau, Johannes Willems, Martin Steinbild
  • Patent number: 9694344
    Abstract: Provided is a novel continuous single-step method of manufacturing a multilayer sorbent polymeric membrane having superior productivity, properties and performance. At least one layer of the polymeric membrane comprises sorbent materials and a plurality of interconnecting pores. The method includes: (a) coextruding layer-forming compositions to form a multilayer coextrudate; (b) casting the coextrudate into a film; (c) extracting the film with an extractant; and (d) removing the extractant from the extracted film to form the multilayer sorbent polymeric membrane. The sorbent membrane of this disclosure can find a wide range of applications for use in filtration, separation and purification of gases and fluids, CO2 and volatile capture, structural support, vehicle emission control, energy harvesting and storage, device, protection, permeation, packaging, printing, and etc.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: July 4, 2017
  • Patent number: 9677153
    Abstract: A method for the hydrometallurgical recovery of lithium from the fraction of used galvanic cells containing lithium, iron and phosphate is disclosed. According to the method, lithium-iron-phosphate-containing fraction is introduced into sulfuric acid and/or hydrochloric acid, and hydrogen peroxide is added in an amount that is at least stoichiometric relative to the iron content to be oxidized of the lithium-iron-phosphate-containing fraction.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: June 13, 2017
    Assignee: Rockwood Lithium GmbH
    Inventors: David Wohlgemuth, Mark Andre Schneider, Rebecca Spielau, Johannes Willems, Martin Steinbild
  • Patent number: 9562303
    Abstract: A mixed oxide containing a) a mixed-substituted lithium manganese spinel in which some of the manganese lattice sites are occupied by lithium ions and b) a boron-oxygen compound. Furthermore, a process for its preparation and the use of the mixed oxide as electrode material for lithium ion batteries.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: February 7, 2017
    Assignee: Johnson Matthey PLC
    Inventors: Christian Vogler, Gerhard Nuspl, Margret Wohlfahrt-Mehrens, Peter Axmann, Gisela Arnold
  • Patent number: 9306213
    Abstract: To provide a process for producing a cathode active material for a lithium ion secondary battery, a cathode for a lithium ion secondary battery, and a lithium ion secondary battery. A production process which comprises contacting a lithium-containing composite oxide containing Li element and a transition metal element with a composition (1) {an aqueous solution containing cation M having at least one metal element (m)} and a composition (2) {an aqueous solution containing anion N having at least one element (n) selected from the group consisting of S, P, F and B, forming a hardly soluble salt when reacted with the cation M}, wherein the total amount A (mL/100 g) of the composition (1) and the composition (2) contacted per 100 g of the lithium-containing composite oxide is in a ratio of 0.1<A/B<5 based on the oil absorption B (mL/100 g) of the lithium-containing composite oxide.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: April 5, 2016
    Assignee: Asahi Glass Company, Limited
    Inventors: Kentaro Tsunozaki, Haisheng Zeng, Takeshi Kawasato
  • Patent number: 9284626
    Abstract: The invention relates to a method for purifying impure lithium bicarbonate by means of a cation exchange resin. In addition to solution purification by ion exchange, the treatment stages include the regeneration of impurity metals bound to the resin. Regeneration consists of washing the resin with water, elution with acid solution, washing with water, neutralization with alkali solution and washing with water. It is characteristic of the method that neutralization is performed with sodium hydroxide solution.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: March 15, 2016
    Assignee: Outotec Oyj
    Inventor: Marika Tiihonen
  • Patent number: 9255012
    Abstract: A method and arrangement for recovering lithium carbonate from a raw material containing lithium, which method comprises pulping (1) the raw material containing lithium in the presence of water and sodium carbonate for producing a slurry containing lithium from the raw material containing lithium. After pulping the lithium-containing slurry is leached (2) for dissolving the lithium in the solution thus producing a solution containing lithium carbonate. After pulping and leaching the method comprises carbonating (3) the solution containing lithium carbonate by using carbon dioxide under atmospheric conditions for producing a solution containing lithium bicarbonate and separating (4) the solids form the solution. The solution containing lithium bicarbonate is purified (5) to produce a purified solution containing lithium bicarbonate, and recovering by crystallizing (6) lithium carbonate from the purified lithium bicarbonate-containing solution.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: February 9, 2016
    Assignee: Outotec (Finland) Oy
    Inventors: Marika Tiihonen, Liisa Haavanlammi
  • Patent number: 9255011
    Abstract: The present invention relates to a method for producing lithium carbonate, which is important as a raw material of a lithium ion battery and the like, from brine resources. More specifically, the invention relates to a method for producing lithium carbonate, in which carbon dioxide gas obtained by calcining limestone is introduced, in the presence of ammonia, into a concentrated brine, which is prepared from a lithium-containing brine as a raw material through an evaporative concentrating step, a desulfurizing step and an electrodialysis step, thereby depositing lithium carbonate crystals, and the crystals thus deposited are recovered through solid-liquid separation.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: February 9, 2016
    Assignees: NITTETSU MINING CO., LTD., TOYO ENGINEERING CORPORATION, SUMITOMO CORPORATION
    Inventors: Masanobu Kawata, Hirohumi Tanaka, Kohei Mitsuhashi, Ryo Kawarabuki, Youichi Yamamoto, Keita Kamiyama, Atsushi Moriya, Norifumi Sakai
  • Patent number: 9243308
    Abstract: The apparatus for recovering Lithium comprises: a supply unit (1) in which lithium-containing water is passed through a filter membrane to yield lithium solution; an adsorption unit (2) in which said solution adsorb the lithium in a column; an elution unit (3) by which hydrochloric acid elute the lithium in the column, yielding a lithium elute containing hydrochloric acid and lithium chloride; a cleaning unit (4) by which the column is washing; a condensing unit (5) in which the lithium elute is circularly vaporized, and the vapor is condensed to yield concentrated lithium chloride solution; a collecting unit (6) in which sodium carbonate is added to lithium chloride solution to collect the lithium as concentrated lithium solution; and a hydrochloric acid recycling unit (7) in which the residue from lithium chloride solution is cooled to yield the hydrochloric acid as used in the elution unit (3).
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: January 26, 2016
    Inventor: Haruo Uehara
  • Patent number: 9169125
    Abstract: Disclosed is a method for producing high-purity lithium carbonate. The method includes: removing magnesium and boron from a brine; separating and removing the remaining magnesium and calcium; concentrating the resulting brine by spray drying to form a powder; washing the powder to concentrate lithium; and carbonating the lithium ions with sodium carbonate (Na2CO3).
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: October 27, 2015
    Assignee: KOREA RESOURCES CORPORATION
    Inventors: Dong Jun Kang, Mi Hee Yoon, Jeon Woong An
  • Publication number: 20150147248
    Abstract: The invention relates to a process for producing a lithium-containing solution from a lithium-containing raw-material solution, by: a) precipitating a first part of magnesium and calcium from the lithium-containing raw-material solution, b) extracting a second part of calcium and magnesium from the lithium-containing solution by liquid-liquid extraction, a resultant product being a lithium-containing solution. The invention also relates to equipment for producing a lithium-containing solution from a lithium-containing raw-material solution, including a precipitation unit to remove a first part of magnesium and calcium and an extraction unit to receive the lithium-containing raw-material solution and to remove therefrom a second part of calcium and magnesium by liquid-liquid extraction, and control unit to control the operation of the precipitation unit.
    Type: Application
    Filed: June 4, 2013
    Publication date: May 28, 2015
    Applicant: OUTOTEC (FINLAND) OY
    Inventors: Hannu Laitala, Janne Karonen, Liisa Haavanlammi
  • Publication number: 20150140332
    Abstract: The present invention relates to a process for preparing high-purity lithium fluoride proceeding from lithium carbonate, and to lithium fluoride having a preferred morphology.
    Type: Application
    Filed: May 23, 2013
    Publication date: May 21, 2015
    Inventors: Matthias Boll, Wolfgang Ebenbeck, Eberhard Kuckert
  • Publication number: 20150132202
    Abstract: This invention relates to a method for preparing a lithium activated alumina intercalate solid by contacting a three-dimensional activated alumina with a lithium salt under conditions sufficient to infuse lithium salts into activated alumina for the selective extraction and recovery of lithium from lithium containing solutions, including brines.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 14, 2015
    Inventors: Stephen Harrison, C. V. Krishnamohan Sharma, M. Scott Conley
  • Patent number: 9005557
    Abstract: A process for reducing the amount of magnesium in a lithium-containing brine by adding an aqueous solution of KCl to the brine to precipitate at least some of the magnesium as carnallite salt is disclosed. Lithium salts prepared using this magnesium removal process are also disclosed.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: April 14, 2015
    Assignee: Rockwood Lithium Inc.
    Inventors: Andrew John Donaldson, Daniel Alfred Boryta
  • Publication number: 20150071837
    Abstract: The present invention relates to a method of manufacturing lithium hydroxide and a method of manufacturing lithium carbonate using the same. The method of manufacturing lithium hydroxide includes: preparation of a lithium phosphate aqueous solution including lithium phosphate particles; addition of a phosphate anion precipitation agent to the lithium phosphate aqueous solution; and precipitating a sparingly soluble phosphate compound through a reaction of cations of the phosphate anion precipitation agent with anions of the lithium phosphate.
    Type: Application
    Filed: December 27, 2012
    Publication date: March 12, 2015
    Inventors: Uong Chon, Im Chang Lee, Ki Young Kim, Gi-Chun Han, Chang Ho Song, So Ra Jung
  • Patent number: 8932545
    Abstract: A method is provided for the synthesis of a mesoporous lithium transition metal compound, the method comprising the steps of (i) reacting a lithium salt with one or more transition metal salts in the presence of a surfactant, the surfactant being present in an amount sufficient to form a liquid crystal phase in the reaction mixture (ii) heating the reaction mixture so as to form a sol-gel and (iii) removing the surfactant to leave a mesoporous product. The mesoporous product can be an oxide, a phosphate, a borate or a silicate and optionally, an additional phosphate, borate or silicate reagent can be added at step (i). The reaction mixture can comprise an optional chelating agent and preferably, the reaction conditions at steps (i) and (ii) are controlled so as to prevent destabilization of the liquid crystal phase. The invention is particularly suitable for producing mesoporous lithium cobalt oxide and lithium iron phosphate.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: January 13, 2015
    Assignee: Qinetiq Limited
    Inventors: Gary Owen Mepsted, Emmanuel Imasuen Eweka
  • Publication number: 20140377154
    Abstract: To provide a lithium recovery method which is capable of efficiently recovering lithium without containing impurities, such as phosphorus and fluorine. In the present invention, an alkali is added to a discharge liquid and/or a cleaning liquid containing lithium discharged in a process of recovering valuable metals from a lithium ion battery, an acidic solvent extractant is caused to be in contact with the discharge liquid and/or the cleaning liquid under a condition of pH 9 or less and a temperature of 0 to 25° C. and lithium ions are extracted, and the acidic solvent extractant having extracted the lithium ions is caused to be in contact with an acid solution of pH 3 or less and the lithium ions are stripped.
    Type: Application
    Filed: February 3, 2012
    Publication date: December 25, 2014
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hitoshi Ishida, Satoshi Asano
  • Publication number: 20140348734
    Abstract: A method of extracting lithium from a lithium bearing solution and specifically, economically extracting lithium from a lithium bearing solution comprising the steps of: adding a nucleus particle to a lithium bearing solution; and precipitating the dissolved lithium in the lithium bearing solution as lithium phosphate by adding a phosphorous supplying material to the lithium bearing solution including the nucleus particle is provided.
    Type: Application
    Filed: December 10, 2012
    Publication date: November 27, 2014
    Inventors: Uong Chong, Ki Young Kim, Gi-Chun Han, Chang Ho Song, Young Seok Jang, Kee-Uek Jeung, So Ra Jung
  • Publication number: 20140334997
    Abstract: Disclosed are methods for a simplified process for preparing lithium carbonate from concentrated lithium brine which can be used for battery grade, pharmaceutical and other high purity grade applications. Impure lithium carbonate is precipitated from lithium concentrated brine, preferably lowered in magnesium, subsequently suspended in aqueous solution and reacted with carbon dioxide to form dissolved lithium bicarbonate. The insoluble impurities are filtered and the dissolved boron and metal impurities such calcium, magnesium and iron are physically separated from the lithium bicarbonate solution using ion selective mediums or other selective processes. Lithium carbonate is then subsequently precipitated.
    Type: Application
    Filed: September 15, 2011
    Publication date: November 13, 2014
    Applicant: OROCOBRE LIMITED
    Inventors: Peter Ehren, Jose De Castro Alem
  • Patent number: 8877690
    Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well production wastewater to form a wastewater brine. The method can involve crystallizing sodium chloride by evaporation of the wastewater brine with concurrent production of a liquor comprising calcium chloride solution. Bromine and lithium can also be recovered from the liquor in accordance with the teachings of the present invention. Various metal sulfates, such as barium sulfate, can be removed from the wastewater in the production of the wastewater brine. Sources of wastewater can include gas well production wastewater and hydrofracture flowback wastewater.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: November 4, 2014
    Assignee: ProChemTech International, Inc.
    Inventor: Timothy Edward Keister
  • Patent number: 8877382
    Abstract: A method for preparing a positive active material for a rechargeable lithium battery includes: a) providing a furnace and a crucible that is included in the furnace; b) putting a mixture of a composite metal precursor and a lithium compound into the crucible; and c) preparing a positive active material for a rechargeable lithium battery by firing the mixture in the crucible, wherein during the process b), the mixture in the crucible is positioned so that a minimum distance from a predetermined position inside the mixture to an exterior of the mixture in the crucible is about 5 cm or less. A rechargeable lithium made by this method is disclosed.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: November 4, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Min-Han Kim, Do-Hyung Park, Seon-Young Kwon, Yu-Mi Song, Ji-Hyun Kim, Kyoung-Hyun Kim
  • Publication number: 20140322110
    Abstract: Provided are continuous methods and processes for removing Li ions from an aqueous feed solution.
    Type: Application
    Filed: November 1, 2012
    Publication date: October 30, 2014
    Applicant: ADVANCE LITHIUM PROJECTS LTD.
    Inventors: Jonathan Lipp, Baruch Grinbaum
  • Publication number: 20140301922
    Abstract: This invention relates to a method for the preparation of lithium carbonate from lithium chloride containing brines. The method can include a silica removal step, capturing lithium chloride, recovering lithium chloride, supplying lithium chloride to an electrochemical cell and producing lithium hydroxide, contacting the lithium hydroxide with carbon dioxide to produce lithium carbonate.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 9, 2014
    Applicant: Simbol Inc.
    Inventor: Stephen Harrison
  • Patent number: 8852452
    Abstract: A lithium transition metal oxide powder for use in a rechargeable battery is disclosed, where the surface of the primary particles of said powder is coated with a LiF layer, where this layer consists of a reaction product of a fluorine-containing polymer and the primary particle surface. The lithium of the LiF originates from the primary particles surface. Examples of the fluorine-containing polymer are either one of PVDF, PVDF-HFP or PTFE. Examples of the lithium transition metal oxide are either one of —LiCodMeO2, wherein M is either one of both of Mg and Ti, with e<0.02 and d+e=1; —Li1+aM?1?aO2±bM1kSm with ?0.03<a<0.06, b<0.02, M? being a transition metal compound, consisting of at least 95% of either one or more elements of the group Ni, Mn, Co and Ti; M1 consisting of either one or more elements of the group Ca, Sr, Y, La, Ce and Zr, with 0?k?0.1 in wt %; and 0<m<0.6, m being expressed in mol %; and —LiaNixCOyM?zO2±eAf, with 0.9<a?<1.1, 0.5?x?0.9, 0<y?0.4, 0<z?0.35, e<0.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: October 7, 2014
    Assignee: Umicore
    Inventors: Jens Paulsen, Randy De Palma, HeonPyo Hong, KyuBo Kim
  • Patent number: 8835026
    Abstract: Disclosed are a recovery for a metaloxidic cathodic active material for a lithium ion secondary battery and a synthesis thereof by the recovery method, wherein the recovery method includes (a) dissolving a cathodic active material from a waste lithium ion secondary battery using sulfuric acid solution containing sulfurous acid gas to generate a solution containing metal ions, (b) injecting sodium hydroxide solution and ammonia solution in the solution containing the metal ions to fabricate an electrode active material precursor, and (c) filtrating the active material precursor, followed by drying and grinding, thus to fabricate a solid-state cathodic active material precursor, and the synthesis method is achieved by mixing the electrode active material precursor fabricated according to the recovery method with lithium carbonate or lithium hydroxide, followed by heat treatment, to generate a metaloxidic cathodic active material.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: September 16, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Kyung Yoon Chung, Hwa Young Lee, Byung-Won Cho
  • Publication number: 20140227153
    Abstract: The invention relates to a method for recycling lithium batteries and more particularly batteries of the Li-ion type and the electrodes of such batteries.
    Type: Application
    Filed: September 5, 2012
    Publication date: August 14, 2014
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT
    Inventors: Richard Laucournet, Sandrine Barthelemy, Nathalie Diaferia
  • Publication number: 20140227154
    Abstract: This invention relates to a method for the preparation of lithium carbonate from lithium chloride containing brines. The method can include a silica removal step, capturing lithium chloride, recovering lithium chloride, supplying lithium chloride to an electrochemical cell and producing lithium hydroxide, contacting the lithium hydroxide with carbon dioxide to produce lithium carbonate.
    Type: Application
    Filed: April 21, 2014
    Publication date: August 14, 2014
    Applicant: Simbol Inc.
    Inventor: Stephen Harrison
  • Patent number: 8795614
    Abstract: The present invention relates to a method of economical extraction of magnesium, boron and calcium, while minimizing the loss of lithium, from a lithium bearing solution. More specifically, the present invention provides a method for economical extraction of magnesium, boron, and calcium, while minimizing the loss of lithium, from a lithium bearing solution comprising the steps of: (a) adding an alkali in the lithium bearing solution to precipitate magnesium hydroxide; (b) absorbing boron ions on the surface of the magnesium hydroxide by adjusting the pH to about 8.5 to about 10.5; and (c) simultaneously extracting magnesium and boron by filtering the magnesium hydroxide absorbed with the boron ions from the lithium bearing solution.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: August 5, 2014
    Assignee: Research Institute of Industrial Science & Technology
    Inventors: Uong Chon, Gi Chun Han, Ki Hong Kim, Chang Ho Song, Ki Young Kim
  • Patent number: 8778289
    Abstract: The present invention relates to a method of extracting lithium from a lithium bearing solution. More specifically, the present invention provides a method of economical extraction of lithium from a lithium bearing solution by adding a phosphorous supplying material to the solution to precipitate lithium phosphate from the dissolved lithium.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: July 15, 2014
    Assignee: Research Institute of Industrial Science & Technology
    Inventors: Uong Chon, Oh Joon Kwon, Ki Hong Kim, Chang Ho Song, Gi Chun Han, Ki Young Kim
  • Patent number: 8753594
    Abstract: This invention relates to a method for preparing a lithium aluminate intercalate (LAI) matrix solid and methods for the selective extraction and recovery of lithium from lithium containing solutions, including brines. The method for preparing the LAI matrix solid includes reacting aluminum hydroxide and a lithium salt for form the lithium aluminate intercalate, which can then be mixed with up to about 20% by weight of a polymer to form the LAI matrix.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: June 17, 2014
    Assignee: Simbol, Inc.
    Inventors: John L. Burba, III, Ray F. Stewart, Brian E. Viani, Stephen Harrison, Christine Ellen Vogdes, John Galil Salim Lahlouh
  • Patent number: 8691169
    Abstract: It is possible to produce battery grade metallic lithium from naturally occurring or industrial brine by a process comprising the following steps: (i) precipitating magnesium with calcium hydroxide; (ii) removal of boron via extraction of solvents; (iii) precipitation of lithium with sodium carbonate; (iv) transformation of lithium carbonate to bicarbonate of lithium with carbonic acid; (v) decomposition of bicarbonate of lithium into high purity lithium carbonate as a result of heating of the solution. Re-precipitation of lithium carbonate by the formation of bicarbonate of lithium allows for the removal of the majority of contaminants which co-purify with lithium carbonate and yield battery grade highly purified lithium carbonate.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: April 8, 2014
    Inventors: Waldo Perez, Hugo Adan Carlos Barrientos, Claudio Suarez, Marcelo Bravo
  • Patent number: 8679428
    Abstract: The present disclosure provides a method of preparing highly pure lithium carbonate from brine. The method includes adding an adsorbent to the brine, from which the magnesium ions Mg2+ have been removed, to adsorb lithium ions Li+ to the adsorbent, followed by providing the adsorbent having the lithium ions Li+ adsorbed thereto to a strong acid solution to desorb the lithium ions Li+ from the adsorbent; enriching the strong acid solution in which the lithium ions Li+ are desorbed from the adsorbent; and obtaining lithium carbonate Li2CO3 through chemical reaction between the lithium ions Li+ in the enriched solution and a carbonate precursor.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: March 25, 2014
    Assignee: Korea Institute of Geosciences and Mineral Resources (KIGAM)
    Inventors: Joon-Soo Kim, Kyeong-Woo Chung, Jin-Young Lee, Sung-Don Kim
  • Publication number: 20140044622
    Abstract: A process for reducing the amount of magnesium in a lithium-containing brine by adding an aqueous solution of KCl to the brine to precipitate at least some of the magnesium as carnallite salt is disclosed. Lithium salts prepared using this magnesium removal process are also disclosed.
    Type: Application
    Filed: October 16, 2013
    Publication date: February 13, 2014
    Applicant: Rockwood Lithium Inc.
    Inventors: Andrew John Donaldson, Daniel Alfred Boryta
  • Patent number: 8647777
    Abstract: Disclosed is a mixed material of lithium iron phosphate and carbon, which contains secondary particles as aggregates of lithium iron phosphate primary particles and a fibrous carbon which is present inside the secondary particles. An electrode containing such a mixed material, a battery comprising such an electrode, a method for producing such a mixed material, and a method for producing a battery are also disclosed.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: February 11, 2014
    Assignee: GS Yuasa International Ltd.
    Inventors: Yoshinobu Yasunaga, Tokuo Inamasu, Akihiro Fujii, Toshiyuki Nukuda
  • Publication number: 20140037521
    Abstract: The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin.
    Type: Application
    Filed: October 3, 2013
    Publication date: February 6, 2014
    Applicant: Simbol Inc.
    Inventors: Stephen Harrison, Robert Blanchet
  • Patent number: 8641992
    Abstract: There is disclosed herein a process for recovering lithium from an impure natural or industrial brine, the process comprising adjusting the pH of a feed brine containing lithium to a value of no less than 11.3 and separating the waste solids and a solution containing lithium values. The solution may be further concentrated and treated to obtain lithium carbonate and a lithium chloride solution suitable for obtaining electrolytic grade lithium chloride.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: February 4, 2014
    Assignee: ADY Resources Limited
    Inventors: Daniel Ernesto Galli, Demetrio Humana, Maria de las Mercedes Otaiza, Claudia del Rosario Cachagua, Rene Enrique Santillan