Chemically Specified Organic Solvent Containing Patents (Class 429/324)
  • Patent number: 7951494
    Abstract: The present invention provides a solid electrolyte with high ion-conductivity which is cheap and exhibits high conductivity in an alkaline form, and stably keeps high conductivity because of a small amount of the leak of a compound bearing conductivity even in a wet state. The invention is useful in an electrochemical system using the solid electrolyte, such as a fuel cell. The solid electrolyte with high ion-conductivity comprises a hybrid compound which contains at least polyvinyl alcohol and a zirconic acid compound, and also a nitrogen-containing organic compound having a structure of amine, quaternary ammonium compound and/or imine, obtained by hydrolyzing a zirconium salt or an oxyzirconium salt in a solution including water, polyvinyl alcohol, a zirconium salt or an oxyzirconium salt and a nitrogen-containing organic compound having a structure of amine, quaternary ammonium compound and/or imine coexist, removing a solvent and contacting with alkali.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: May 31, 2011
    Assignees: Nippon Kodoshi Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Haruo Sawa, Haruyuki Nakanishi, Shinichi Matsumoto
  • Patent number: 7951495
    Abstract: This invention relates to a safe electrolyte having no risk of igniting-firing, and more particularly to a non-aqueous electrolyte for a battery comprising an ionic liquid composed of a cation portion and an anion portion, and a supporting salt, characterized in that the cation portion of the ionic liquid contains phosphorus and nitrogen, as well as an electrolyte for an electric double layer capacitor comprising an ionic liquid composed of a cation portion and an anion portion, characterized in that the cation portion of the ionic liquid contains phosphorus and nitrogen.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: May 31, 2011
    Assignee: Bridgestone Corporation
    Inventors: Masashi Otsuki, Hiroshi Kanno
  • Publication number: 20110123875
    Abstract: An electrochemical cell is described. The electrochemical cell includes an anode, a cathode, a separator between said anode and said cathode, and an electrolyte. The electrolyte includes a salt dissolved in an organic solvent. The separator in combination with the electrolyte has an area specific resistance less than 2 ohm-cm2. The electrochemical cell has an interfacial anode to cathode ratio of less than about 1.1.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 26, 2011
    Inventors: Nikolai Nikolaevich Issaev, Michael Pozin, Michael Dean Sliger, Eric Navok, Fred Joseph Berkowitz
  • Publication number: 20110123874
    Abstract: An electrochemical cell is described. The electrochemical cell includes an anode, a cathode, a separator between said anode and said cathode, and an electrolyte. The electrolyte includes a salt dissolved in an organic solvent. The separator in combination with the electrolyte has an area specific resistance less than 2 ohm-cm2.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 26, 2011
    Inventors: Nikolai Nikolaevich Issaev, Michael Pozin, Michael Dean Sliger, Eric Navok, Fred Joseph Berkowitz
  • Patent number: 7939206
    Abstract: This invention relates to a non-aqueous electrolyte for a cell and an electrolyte for a polymer cell in which the risk of igniting-firing an aprotic organic solvent retained in the cell and leaked out of the cell through vaporization or the like when the temperature of the cell rises abnormally is reduced, and to a non-aqueous electrolyte for a cell and an electrolyte for a polymer cell comprising an aprotic organic solvent and a compound containing phosphorus and/or nitrogen in its molecule and having a difference of a boiling point from that of the aprotic organic solvent of not more than 25° C.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: May 10, 2011
    Assignee: Bridgestone Corporation
    Inventors: Masashi Otsuki, Takao Ogino
  • Patent number: 7931987
    Abstract: A lithium-ion battery includes a positive electrode comprising a current collector and a first active material comprising LiCoO2 and a negative electrode comprising a current collector, a second active material, and a third active material. The second active material comprises a lithium titanate material and the third active material is V2O5. The third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: April 26, 2011
    Assignee: Medtronic, Inc.
    Inventors: William G. Howard, Craig L. Schmidt, Erik R. Scott
  • Patent number: 7901812
    Abstract: The invention concerns novel ionic compounds with low melting point whereof the onium type cation having at least a heteroatom such as N, O, S or P bearing the positive charge and whereof the anion includes, wholly or partially, at least an ion imidide such as (FX1O)N?(OX2F) wherein X1 and X2 are identical or different and comprise SO or PF, and their use as solvent in electrochemical devices. Said composition comprises a salt wherein the anionic charge is delocalised, and can be used, inter alia, as electrolyte.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: March 8, 2011
    Assignees: ACEP Inc., Centre National de la Recherche Scientifique, Universite de Montreal
    Inventors: Christophe Michot, Michel Armand, Michel Gauthier, Nathalie Ravet
  • Publication number: 20110053034
    Abstract: A method according to the present invention is a method for producing an ionic liquid from a molten salt solution containing a molten salt constituted by combining the cation portion and the anion portion, the ionic liquid containing the molten salt as a main component, the method comprising: removing water from the molten salt solution, the step of removing the water including adding a compound in the molten salt solution, the compound being represented by General Formula (1): where at least two of R1 to R4 are a C1 to C8 alkoxy group(s), the rest of R1 to R4 are a hydrogen atom(s) or a C1 to C8 alkyl group(s). By this, it is possible to remove water from the molten salt solution regardless of whether the molten salt solution is hydrophilic or hydrophobic. The present invention provides a method of producing an ionic liquid, which method can remove water from any kind of ionic liquid economically, easily, and quickly.
    Type: Application
    Filed: June 11, 2008
    Publication date: March 3, 2011
    Inventors: Hitoshi Mitsui, Kenji Sonobe, Ilhyong Ryu, Takahide Fukuyama
  • Patent number: 7883801
    Abstract: An electrolyte for a rechargeable lithium battery according to one embodiment of the present invention includes a modified polyether silicone oil, a carbonate, and a lithium salt. The electrolyte has improved thermal stability and lithium ion conductivity.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: February 8, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ryuichi Shimizu, Sang-Woog Ryu, Sung-Soo Kim
  • Publication number: 20110020710
    Abstract: It is an object of the present invention to provide a lithium ion secondary battery which suppresses overcharge while keeping battery characteristics. The lithium ion secondary battery has positive and negative electrodes facing each other via a separator and being filled with an electrolytic solution with a supporting electrolyte dissolved in an non-aqueous solvent, wherein the electrolytic solution contains a compound represented by Formula (1) (wherein A is oxygen, nitrogen, sulfur, selenium, silicon or phosphorus; R1 and R2 are each hydrogen or an organic group; and X1 to X12 are each hydrogen, a hydrocarbon group or halogen).
    Type: Application
    Filed: February 25, 2010
    Publication date: January 27, 2011
    Inventor: Norio Iwayasu
  • Patent number: 7875201
    Abstract: An electrolyte solution used for an electrochemical device including an electrolyte and at least one of fluoro-containing compounds represented by the general formula (1): where, R1, R2 each represent a hydrogen atom, a fluorine atom, or an alkyl group of 1 to 10 carbon atoms in which R1 and R2 may be identical or different with each other, or a cyclic structure may be formed by providing bonding between the carbon atoms contained in R1 and R2.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: January 25, 2011
    Assignee: Panasonic Corporation
    Inventor: Hiroyuki Maeshima
  • Patent number: 7867294
    Abstract: A process is provided to produce non-aqueous electrolytic solution for use in batteries having low acid content and low water content. The invention involves removing acids and water from non-aqueous electrolytic solutions typically found in lithium or lithium-ion batteries by using nitrogen-containing compounds such as triazines. After treatment by a triazine such as melamine, the concentrations of acids and water in the electrolytic solutions are substantially decreased. The present invention provides a process to prepare extremely pure electrolytic solutions having low (<20 ppm) concentrations of both water and acids.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: January 11, 2011
    Assignee: Novolyte Technologies Inc.
    Inventors: Zhongyi Deng, Jerry L. Decker, Wu Xu, John R. Sans, Pascal Bolomey
  • Patent number: 7862933
    Abstract: The present invention provides a lithium secondary battery which has improved safety, mainly coming from use of an electrolyte solution which is not inflammable at room temperature (20° C.), while not deteriorating output characteristics at low temperatures and room temperature or output maintenance characteristics after storage at high temperature (50° C.). The lithium secondary battery of the present invention, encased in a container, is provided with a cathode and an anode, both capable of storing/releasing lithium ions, a separator which separates these electrodes from each other, and an electrolyte solution containing a cyclic carbonate and a linear carbonate as solvents and a compound such as VC at composition ratios of 18.0 to 30.0%, 74.0 to 81.9% and 0.1 to 1.0%, respectively, based on the whole solvents, all percentages by volume.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: January 4, 2011
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Takefumi Okumura, Takahiro Yamaki, Masanori Yoshikawa, Yoshimi Yanai, Toyotaka Yuasa
  • Patent number: 7858242
    Abstract: There is provided an electrolytic solution which may significantly improve performance deterioration with time of an electrochemical capacitor. There is provided an electrolytic solution, comprising an electrolyte salt (A) shown as the following formula (1). In the formula, “R1,” “R2,” and “R3” independently represent an alkyl group having a carbon number of 1 to 3, “R4” and “R5” independently represent hydrogen atom or an alkyl group having a carbon number of 1 to 3, and “X?” represents a counterpart anion.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: December 28, 2010
    Assignees: Sanyo Chemical Industries, Ltd., Panasonic Corporation
    Inventors: Koji Fujioka, Takao Mukai, Yasuyuki Ito, Hiroyuki Maeshima
  • Patent number: 7854854
    Abstract: A quaternary ammonium salt of the formula (1), electrolytic solution and electrochemical device using the salt wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is N(CN)2?, SCN?, NO3?, NCO? or NO2?.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: December 21, 2010
    Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa Corporation
    Inventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
  • Patent number: 7855017
    Abstract: A structural battery includes an anode, cathode and electrolyte which, taken collectively, have sufficient mechanical strength to allow the battery to be used as a structural component of an article of manufacture. The combined anode, cathode and electrolyte have a stiffness between 10 MPa-1000 GPa, and in certain instances have a stiffness between 50 MPa-100 GPa. Also disclosed are solid electrolytes which may be used in structural batteries. The electrolytes are comprised of salts dissolved in a solvent such as a body of polymeric material. The electrolyte has good ionic conductivity and good mechanical properties. The solid electrolyte may be comprised of a body of uncrosslinked polymer or an at least partially crosslinked polymer such as a multifunctional polymer having segments comprised of linear resins and segments comprised of crosslinking resins. Also disclosed are methods for manufacturing the structural batteries.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: December 21, 2010
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: James F. Snyder, Robert H. Carter, Eric D. Wetzel
  • Publication number: 20100316915
    Abstract: The present invention provides an electrolyte containing novel additive for electrochemical device and the electrochemical device thereof. The additive is a compound represented by below formula (I): wherein R is defined as herein; n is 2, 3, or 4. The additive of the present invention can protect the surface of the carbonaceous material on the anode, suppresses the occurrence of exfoliation, and therefore increases the lifetime of the electrochemical device. Furthermore, the additive of the present invention also slows down the decay of capacity on the cathode during charging-discharging cycles, and hence maintains a better performance.
    Type: Application
    Filed: March 19, 2010
    Publication date: December 16, 2010
    Applicant: TAIWAN HOPAX CHEMS. MFG. CO., LTD.
    Inventors: Chih-Wei Huang, Li-Jane Her, Jou-Yeh Su
  • Patent number: 7851091
    Abstract: There are provided compositions comprising a first compound selected from the group consisting of compounds of formulas (Ib), (III), (V), and (VII), and a second compound selected from the group consisting of compounds of formulas (IIb), (IV), (VI), and (VIII): Various chemical entities can be used for R4 to R11. These compositions can be particularly useful as anti-static agents or as electron activable precursors to a redox couple.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: December 14, 2010
    Assignee: Transfert Plus, S.E.C.
    Inventors: Amer Hammami, Benoît Marsan
  • Patent number: 7851093
    Abstract: A non-aqueous electrolyte for a secondary battery, including a non-aqueous solvent in which a solute is dissolved, a first additive and a second additive, wherein the first additive is a vinyl monomer having an electron donating group, the second additive is a carbonic acid ester having at least one carbon-carbon unsaturated bond, and an e value, which is a polarization factor of the vinyl monomer having an electron donating group, is a negative value.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: December 14, 2010
    Assignee: Panasonic Corporation
    Inventors: Masaki Deguchi, Tooru Matsui, Hiroshi Yoshizawa
  • Publication number: 20100304223
    Abstract: This invention relates to a safe electrolyte having no risk of igniting-firing, and more particularly to a non-aqueous electrolyte for a battery comprising an ionic liquid composed of a cation portion and an anion portion, and a supporting salt, characterized in that the cation portion of the ionic liquid contains phosphorus and nitrogen, as well as an electrolyte for an electric double layer capacitor comprising an ionic liquid composed of a cation portion and an anion portion, characterized in that the cation portion of the ionic liquid contains phosphorus and nitrogen.
    Type: Application
    Filed: December 1, 2006
    Publication date: December 2, 2010
    Inventors: Masashi Otsuki, Hiroshi Kanno
  • Publication number: 20100297508
    Abstract: An organic electrolytic solution including a lithium salt, an organic solvent, and a compound represented by the formula and a lithium battery employing the organic electrolytic solution. Groups Z1 and Z2 are each, independently, a cyano group, an isocyano group, a substituted or unsubstituted dicyanoethylphosphino group, or a substituted or unsubstituted dialkoxyphosphoryloxy group. Groups R1 through R4 are described fully in the Description. The organic electrolyte solution inhibits decomposition of an electrolytic solution and elution or precipitation of metal ions, and thus the lithium battery including the organic electrolytic solution has excellent cycle characteristics and lifetime characteristics.
    Type: Application
    Filed: May 7, 2010
    Publication date: November 25, 2010
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Dong-Joon LEE, Young-gyoon Ryu, Dong-min Im, Sook-soo Lee
  • Patent number: 7838150
    Abstract: A nonaqueous lithium secondary battery comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein: 1) the positive electrode comprises a porous carbonaceous material whose BET specific surface area is at least 500 m2/g, or a mixture of a porous carbonaceous material whose BET specific surface area is at least 500 m2/g and a material capable of electrochemically occluding and releasing lithium; and 2) the negative electrode comprises a carbonaceous material whose BET specific surface area is 20 to 1000 m2/g.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: November 23, 2010
    Assignee: KRI, Inc.
    Inventors: Hajime Kinoshita, Shizukuni Yata
  • Patent number: 7838149
    Abstract: An electrochemical cell comprises as an anode, a lithium transition metal oxide or sulphide compound which as a [B2]X4n? spinel-type framework structure of an A[B2]S4 spinel wherein A and B are metal cations selected from Li, Ti, V, Mn, Fe and Co, X is oxygen or sulphur, and n? refers to the overall charge of the structural unit [B2]X4 of the framework structure. The transition metal cation in the fully discharged state has a mean oxidation state greater than +3 for Ti, +3 for V, +3.5 for Mn, +2 for Fe and +2 for Co. The cell includes as a cathode, a lithium metal oxide or sulphide compound. An electrically insulative lithium containing liquid or polymeric electronically conductive electrolyte is provided between the anode and the cathode.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: November 23, 2010
    Assignee: Technology Finance Corporation (Proprietary) Limited
    Inventors: Michael M. Thackeray, Rosalind J. Gummow, Ernest E Ferg
  • Patent number: 7833666
    Abstract: Electrolytic solvents and applications of such solvents including electric current-producing devices. For example, a solvent can include a sulfone compound of R1—SO2—R2, with R1 being an alkyl group and R2 a partially oxygenated alkyl group, to exhibit high chemical and thermal stability and high oxidation resistance. For another example, a battery can include, between an anode and a cathode, an electrolyte which includes ionic electrolyte salts and a non-aqueous electrolyte solvent which includes a non-symmetrical, non-cyclic sulfone. The sulfone has a formula of R1—SO2—R2, wherein R1 is a linear or branched alkyl or partially or fully fluorinated linear or branched alkyl group having 1 to 7 carbon atoms, and R2 is a linear or branched or partially or fully fluorinated linear or branched oxygen containing alkyl group having 1 to 7 carbon atoms. The electrolyte can include an electrolyte co-solvent and an electrolyte additive for protective layer formation.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: November 16, 2010
    Assignee: Arizona Board of Regents for and behalf of Arizona State University
    Inventors: Charles Austen Angell, Xiao-Guang Sun
  • Publication number: 20100285373
    Abstract: This invention relates to a non-aqueous electrolyte having high non-combustibility and a non-aqueous electrolyte secondary power source having high safety and exhibiting stable performance even under high load conditions or low-temperature conditions, and more particularly to a non-aqueous electrolyte characterized by comprising a cyclic phosphazene compound represented by the following general formula (I): (NPR2)n ??(I) [wherein Rs are independently fluorine, an alkoxy group or an aryloxy group and n is 3-4], a non-aqueous solvent, LiPF6 and at least one lithium amide selected from the group consisting of Li(FSO2)2N, Li(CF3SO2)2N and Li(C2F5SO2)2N, as well as a non-aqueous electrolyte secondary power source comprising the non-aqueous electrolyte, a positive electrode and a negative electrode.
    Type: Application
    Filed: November 20, 2008
    Publication date: November 11, 2010
    Applicant: Bridgestone Corporation
    Inventor: Yasuo Horikawa
  • Publication number: 20100285374
    Abstract: An organic electrolytic solution including a lithium salt, an organic solvent, and a linear or cyclic polymerizable monomer that is negatively charged due to localization of electrons on the monomer, and a lithium battery employing the same. Since the organic electrolytic solution prevents decomposition of an electrolyte and elution from or precipitation of metal ions, the lithium battery employing the organic electrolytic solution has excellent lifetime characteristics and cycle characteristics.
    Type: Application
    Filed: May 7, 2010
    Publication date: November 11, 2010
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Dong-joon LEE, Young-gyoon Ryu, Dong-min Im, Seok-soo Lee
  • Patent number: 7824810
    Abstract: An electrolytic solution capable of inhibiting self-discharge even under the high temperatures and a battery using the electrolytic solution are provided. A spirally wound electrode body in which a cathode and an anode are wound with a separator in between and spirally wound is included inside the battery can. An electrolytic solution is impregnated in the separator. The electrolytic solution contains ethylene sulfite, vinylene carbonate, LiPF6, and a light metal salt such as lithium difluoro[oxalato-O,O?]borate in a given range. Thereby, the self-discharge can be inhibited even under the high temperatures.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: November 2, 2010
    Assignee: Sony Corporation
    Inventors: Shinsaku Ugawa, Yoshikatsu Yamamoto
  • Patent number: 7824808
    Abstract: The present invention relates to Lithium Metal batteries. In particular, it is related to lithium metal batteries containing a polyimide-based electrolyte. The present invention concerns a new concept of polyimide-based electrolytic component having an electrolyte comprising of at least one solvent and at least one alkali metal salt, with specific amounts of solvents, to optimize the properties of conductivity of the polyimide-based electrolyte and the mechanical properties of the polyimide-based electrolyte separator towards metallic lithium anode to prevent dendrites growths.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: November 2, 2010
    Assignee: Solicore, Inc.
    Inventors: Allain Vallee, Dany Brouillette, James K. Pugh, Wade W. Guindy
  • Patent number: 7824578
    Abstract: Disclosed is an electrolyte for batteries, which comprises: (a) an electrolyte salt; (b) an electrolyte solvent; and (c) a sulfonate-based compound containing at least one electron withdrawing group (EWG) selected from the group consisting of a cyano group (—CN), an isocyanate group (—NCO), a thiocyanate group (—SCN) and an isothiocyanate group (—NCS). An electrode comprising the sulfonate-based compound or a chemical reaction product thereof, partially or totally formed on the surface thereof, and an electrochemical device comprising the electrolyte and/or the electrode are also disclosed. The electrochemical device using the sulfonate-based compound containing a cyano group, an isocyanate group, a thiocyanate group and/or an isothiocyanate group as an additive for electrolytes can provide significantly improved high-temperature lifespan characteristics.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: November 2, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Ho Chun Lee, Tae Yoon Park, Yong Su Choi, Soo Jin Yoon, Hong Kyu Park
  • Patent number: 7824804
    Abstract: An electrochemical cell comprises as an anode, a lithium transition metal oxide or sulphide compound which has a [B2]X4n? spinel-type framework structure of an A[B2]X4 spinel wherein A and B are metal cations selected from Li, Ti, V, Mn, Fe and Co, X is oxygen or sulphur, and n? refers to the overall charge of the structural unit [B2]X4 of the framework structure. The transition metal cation in the fully discharged state has a mean oxidation state greater than +3 for Ti, +3 for V, +3.5 for Mn, +2 for Fe and +2 for Co. The cell includes as a cathode, a lithium metal oxide or sulphide compound. An electrically insulative lithium containing liquid or polymeric electronically conductive electrolyte is provided between the anode and the cathode.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 2, 2010
    Assignee: Technology Finance Corporation (Proprietary) Limited
    Inventors: Michael M. Thackeray, Rosalind J. Gummow, Ernest E Ferg
  • Publication number: 20100273066
    Abstract: A rechargeable lithium-air battery (10) comprises a non-aqueous, organic-solvent-based electrolyte (16) including a lithium salt and an additive containing an alkylene group, disposed between a spaced-apart pair of a lithium anode (12) and an air cathode (14). The alkylene additive may be alkylene carbonate, alkylene siloxane, or a combination of alkylene carbonate and alkylene siloxane. The alkylene carbonate may be vinylene carbonate, butylene carbonate, or a combination of vinylene carbonate and butylene carbonate. The alkylene siloxane may be a polymerizable silane. The polymerizable silane is triacetoxyvinylsilane.
    Type: Application
    Filed: April 1, 2010
    Publication date: October 28, 2010
    Applicant: EXCELLATRON SOLID STATE LLC
    Inventors: John Scott Flanagan, Prabhakar A. Tamirisa, Ji-Guang Zhang
  • Patent number: 7811710
    Abstract: A redox chemical shuttle comprising an aromatic compound substituted with at least one tertiary carbon organic group and at least one alkoxy group (for example, 2,5-di-tert-butyl-1,4-dimethoxybenzene) provides repeated overcharge protection in rechargeable lithium-ion cells.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: October 12, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffrey R. Dahn, Jun Chen, Claudia Buhrmester
  • Publication number: 20100255369
    Abstract: An electrolyte for a rechargeable lithium battery that includes a non-aqueous organic solvent, a lithium salt, and an electrolyte additive. The electrolyte additive includes 2 to 6 wt % of succinonitrile, 2 to 6 wt % of alkane sultone, and 1 to 3 wt % of vinylethylene carbonate based on the total weight of the electrolyte.
    Type: Application
    Filed: September 15, 2009
    Publication date: October 7, 2010
    Inventors: Duck-Chul Hwang, Sang-Min Lee, Kyoung-Han Yew, Sang-Jin Kim
  • Patent number: 7807300
    Abstract: A resistance-stabilizing additive to an electrolyte for a battery cell in an implantable medical device is presented. At least one resistance-stabilizing additive is selected from a group comprising an electron withdrawing group, an aromatic diacid salt, an inorganic salt, an aliphatic organic acid, an aromatic diacid, and an aromatic monoacid.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: October 5, 2010
    Assignee: Medtronic, Inc.
    Inventors: Donald R. Merritt, Craig L. Schmidt
  • Patent number: 7799467
    Abstract: A solid polymer electrolyte produced using a layer-by layer (LBL) assembly process. The solid electrolyte is assembled on a substrate by alternating exposure to dilute solutions of polycation and polyanion or hydrogen-bonding donor and hydrogen-bonding acceptor. Ethylene oxide content is introduced into the LBL film by 1) covalent grafting onto a polyionic species, 2) inclusion of an ethylene oxide (e.g. PEO) polymer as one of the two component species of a LBL assembly, or 3) the addition of ethylene oxide-containing small molecule, oligomer, or polymer to a fully assembled LBL polymer matrix. The prepared films were to be ultrathin SPE films with sound mechanical properties and ion conductivity to meet the needs of current applications, such as batteries, fuels cells, sensors and electrochromic devices.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: September 21, 2010
    Assignee: Massachusetts Institute of Technology
    Inventors: Dean M. DeLongchamp, Paula T. Hammond, Hiroaki Tokuhisa
  • Patent number: 7799469
    Abstract: A nonaqueous electrolyte solution in which an electrolyte salt is dissolved in an organic solvent includes, includes at least one or more compounds selected from the silicon compounds represented by general formula (1), (2), or (3) below: (In the formulae, each of R1, R2, and R3 independently represents a C1-8 alkyl, C2-8 alkenyl, C2-8 alkynyl, or C6-8 aryl group; R4 represents a C1-8 alkylene, C2-8 alkenylene, C2-8 alkynylene, or C6-8 arylene group; and n represents 1 or 2. When n is 1, X represents a fluorine atom, trifluoromethyl group, C1-8 alkoxy group, C2-8 alkenyloxy group, C6-8 aryloxy group, or C2-8 acyloxy group, C1-8 sulfonyloxy group, isocyanato group, isothiocyanato group, or cyano group. When n is 2, X represents a C1-8 alkylene group, C1-8 alkylenedioxy group, C2-8 alkenylene group, C2-8 alkenylenedioxy group, C2-8 alkynylene group, C2-8 alkynylenedioxy group, C6-8 arylene group, C6-8 arylenedioxy group, C2-8 diacyloxy group, oxygen atom, or direct bond.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: September 21, 2010
    Assignees: Denso Corporation, Adeka Corporation
    Inventors: Kouhei Yamamoto, Satoru Suzuki, Manabu Yamada, Takayuki Taki, Atsuo Tomita, Hiroto Asano
  • Patent number: 7799471
    Abstract: Disclosed is an electrolyte for a battery comprising: (a) an electrolyte salt; (b) an organic solvent; and (c) a functional electrolyte additive. An electrochemical device comprising the electrolyte is also disclosed. The additive used in the electrochemical device effectively controls the surface of a cathode active material, which otherwise causes side reactions with an electrolyte, due to the basic skeleton structure and polar side branches of the additive. Therefore, it is possible to improve the safety of a battery, while not adversely affecting the quality of a battery.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: September 21, 2010
    Assignees: LG Chem, Ltd., Korea Research Institute of Chemical Technology
    Inventors: Sang Young Lee, Seok Koo Kim, Jung Don Suk, Hyun Hang Yong, Jang Hyuk Hong, Soon Ho Ahn, Yongku Kang, Changjin Lee, Mi Young Son
  • Patent number: 7794876
    Abstract: To provide a novel pentafluorophenyloxy compound, a method for producing same, a nonaqueous electrolyte solution capable of forming a lithium secondary battery having excellent battery characteristics such as electrical capacity, cycling property and storage property, and a lithium secondary battery. A pentafluorophenyloxy compound represented by the general formula (I) shown below, a method for producing same, a nonaqueous electrolyte solution containing same and a lithium secondary battery: wherein R1 represents a —COCO— group, a S?O group or a S(?O)2 group, R2 represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group or an aralkyl group with the proviso that at least one of the hydrogen atoms of R2 may be each substituted with a halogen atom and that R2 does not represent an aryl group when R1 represents a —COCO— group.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: September 14, 2010
    Assignee: Ube Industries, Ltd.
    Inventors: Koji Abe, Takaaki Kuwata, Manabu Takase
  • Publication number: 20100227226
    Abstract: A nonaqueous electrolyte which contains a nonaqueous organic solvent and a lithium salt dissolved therein is provided. Also provided is a lithium secondary battery employing the nonaqueous electrolyte.
    Type: Application
    Filed: May 17, 2010
    Publication date: September 9, 2010
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Masamichi ONUKI, Minoru Kotato, Isao Konno, Shinichi Kinoshita, Noriko Shima
  • Publication number: 20100227225
    Abstract: To provide a solvent composition that exhibits non-volatility, non-flammability, thermal stability, chemical stability and high ion conductivity, is excellent in high rate charge/discharge characteristics, is free from the drop of performance at low temperatures and can function as a non-aqueous electrolyte in electrochemical devices. Solvent composition comprising an ionic liquid and a halogenated solvent, which has a halogenation degree of 87% or below and contains at least one partially halogenated alkyl group and/or at least one partially halogenated alkylene group, and in which the solvent composition is under a single phase and in an uniform condition at 25° C.
    Type: Application
    Filed: February 5, 2007
    Publication date: September 9, 2010
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventor: Haruki Segawa
  • Publication number: 20100227227
    Abstract: Disclosed is an electrolyte for a rechargeable lithium battery including: a first additive having an oxidation potential of 4.1 to 4.6V; a second additive having an oxidation potential of 4.4 to 5.0V; a non-aqueous organic solvent; and a lithium salt.
    Type: Application
    Filed: May 18, 2010
    Publication date: September 9, 2010
    Inventors: Jin--Hee Kim, Jin-Sung Kim
  • Publication number: 20100216033
    Abstract: A negative electrode material for non-aqueous electrolyte secondary batteries, characterized in that the negative electrode material comprises a composite particle including solid phases A and B, the solid phase A being dispersed in the solid phase B, and the ratio (IA/IB) of the maximum diffracted X-ray intensity (IA) attributed to the solid phase A to the maximum diffracted X-ray intensity (IB) attributed to the solid phase B satisfies 0.001?IA/IB?0.1, in terms of a diffraction line obtained by a wide-angle X-ray diffraction measurement of the composite particle.
    Type: Application
    Filed: May 6, 2010
    Publication date: August 26, 2010
    Applicant: Panasonic Corporation
    Inventors: Harunari SHIMAMURA, Toshitada Sato, Takayuki Nakamoto, Yasuhiko Bito, Yoshiaki Nitta
  • Publication number: 20100209783
    Abstract: A lithium-ion battery containing: a positive electrode, a negative electrode, an electrolyte comprising: an organic solvent chosen from the group comprising carbonates, linear esters of a saturated acid, or a mixture thereof, an additive capable of forming a passivation film on the surface of the negative electrode, at least one lithium salt, at least one ionic liquid for which the percentage by weight in the electrolyte is greater than or equal to 20% and less than 50%; a separator for which the apparent contact angle between the surface thereof and the electrolyte is less than 20°.
    Type: Application
    Filed: June 12, 2008
    Publication date: August 19, 2010
    Applicant: SAFT GROUPE SA
    Inventors: Clemence Siret, Lucas Caratero, Philippe Biensan
  • Publication number: 20100203397
    Abstract: An electrochemical energy store including at least one anode and at least one cathode in an electrolyte, lithium peroxide being generated at the cathode by the reaction of lithium ions with oxygen. The cathode is connected to an oxygen reservoir.
    Type: Application
    Filed: May 15, 2008
    Publication date: August 12, 2010
    Inventors: Sabine Thiemann-Handler, Martin Holger Koenigsmann
  • Patent number: 7771879
    Abstract: Provided is a method of producing a nanoparticle-filled phase inversion polymer electrolyte. The method includes mixing a nanoparticle inorganic filler and a polymer with a solvent to obtain a slurry; casting the obtained slurry to form a membrane; obtaining an inorganic nanoparticle-filled porous polymer membrane by developing internal pores in the cast membrane using a phase inversion method; and impregnating the inorganic nanoparticle-filled porous polymer membrane with an electrolytic solution. The polymer electrolyte produced using the method can be used in a small lithium secondary battery having a high capacity, thereby providing an excellent battery property.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: August 10, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Man Kim, Young Gi Lee, Nam Gyu Park, Soon Ho Chang, Kwang Sun Ryu
  • Patent number: 7767340
    Abstract: A non-aqueous electrolyte secondary battery having a positive electrode and a negative electrode with an active material capable of absorbing and desorbing lithium, a separator interposed between the positive and negative electrodes, and a non-aqueous electrolyte. The negative electrode active material is covered by a coating having elasticity. The fully elastic coating expands and contracts following the volume change of the negative electrode active material; thus, the coating brings out its desired functions without being damaged or broken. Regardless of the degree of the volume change of the negative electrode active material, a lasting coating without damage is formed on the negative electrode active material, to improve performances of the non-aqueous electrolyte secondary battery.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: August 3, 2010
    Assignee: Panasonic Corporation
    Inventors: Tetsuo Nanno, Tomohiro Ueda
  • Publication number: 20100183927
    Abstract: The present invention provides an electrolyte containing novel additive for electrochemical device and the electrochemical device thereof. The additive is a compound represented by below formula (I): wherein R1 and R2 are independently hydrogen, methyl, ethyl, or halogen; n and m are independently 1, 2, or 3. The additive of the present invention can protect the surface of the carbonaceous material on the anode and suppress the occurrence of exfoliation, thereby increasing the lifetime of the electrochemical device. Furthermore, the additive of the present invention also slows down the decay of capacity on the cathode during charging-discharging cycles, and hence maintains a better performance.
    Type: Application
    Filed: January 15, 2010
    Publication date: July 22, 2010
    Applicant: TAIWAN HOPAX CHEMS. MFG. CO., LTD.
    Inventors: Li-Jane Her, Chih-Wei Huang, Po-Cheng Chen
  • Patent number: 7754388
    Abstract: The object is to provide a nonaqueous-electrolyte battery having high charge/discharge efficiency and excellent high-rate performance. This subject is accomplished by using a nonaqueous electrolyte which comprises an organic solvent and a lithium salt dissolved therein and is characterized by containing at least one quaternary ammonium salt in an amount of 0.06 mol/L or larger and 0.5 mol/L or smaller. This effect is thought to be attributable to the following mechanism: in a relatively early stage (stage in which the negative-electrode potential is relatively noble) in a first charge step, a satisfactory protective coating film is formed on the negative electrode by the action of the quaternary ammonium salt and, hence, the organic solvent employed in the nonaqueous electrolyte is inhibited from decomposing.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: July 13, 2010
    Assignee: GS Yuasa Corporation
    Inventors: Hiroe Nakagawa, Toshiyuki Nukada, Yuki Fujimoto
  • Patent number: 7754389
    Abstract: An electrolyte solution and a battery which are capable of improving cycle characteristics are provided. An anode includes a simple substance, an alloy or a compound of a metal element or a metalloid element capable of forming an alloy with lithium as an anode active material. A separator is impregnated with an electrolyte solution formed through dissolving an electrolyte salt in a solvent. The electrolyte salt includes a first electrolyte salt including LiB(C2O4)2 and a second electrolyte salt including at least one kind selected from the group consisting of LiPF6, LiBF4, LiN(CF3SO2)2, LiN(C2F5SO2)2, LiClO4, LiAsF6 and LiC(CF3SO2)3. In the solvent, 4-fluoroethylene carbonate is included. A coating is formed on the anode by the first electrolyte salt, and high ionic conductivity can be obtained by the second electrolyte salt. Further an oxidation-decomposition reaction of the electrolyte solution which occurs in a cathode can be prevented by 4-fluoroethylene carbonate.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: July 13, 2010
    Assignee: Sony Corporation
    Inventors: Akira Yamaguchi, Kaoru Nakajima, Yusuke Fujishige, Yuzuru Fukushima, Masayuki Nagamine
  • Patent number: 7749659
    Abstract: The present invention uses a mixture of spherical carbonaceous materials having different average particle sizes as an anode active material in an anode composite mixture layer of an anode. The spherical carbonaceous material of large particle size decreases the reaction with non-aqueous electrolyte solution to suppress the decrease in battery capacity, form clearances having suitable sizes in the anode composite mixture layer, and retain the non-aqueous electrolyte solution. The clearances in the anode composite mixture layer are efficiently filled with the carbonaceous material of small particle size while spaces capable of suitably retaining the non-aqueous electrolyte solution are left unfilled. Thus, the volume density of the anode composite mixture layer is improved and the battery capacity is increased. Accordingly, energy density can be increased without deteriorating battery characteristics.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: July 6, 2010
    Assignee: Sony Corporation
    Inventors: Mashio Shibuya, Kenichi Kawase, Fumiko Hara, Yusuke Fujishige