Abstract: The present invention provides an electrolyte for lithium and/or lithium-ion batteries comprising a lithium salt in a liquid carrier comprising heteroaromatic compound including a five-membered or six-membered heteroaromatic ring moiety selected from the group consisting of a furan, a pyrazine, a triazine, a pyrrole, and a thiophene, the heteroaromatic ring moiety bearing least one carboxylic ester or carboxylic anhydride substituent bound to at least one carbon atom of the heteroaromatic ring. Preferred heteroaromatic ring moieties include pyridine compounds, pyrazine compounds, pyrrole compounds, furan compounds, and thiophene compounds.
Abstract: A rechargeable lithium battery including a negative electrode including a silicon-based negative active material; a positive electrode including a positive active material including a sacrificial positive active material selected from lithium nickel oxides, lithium molybdenum oxides, and combinations thereof; and a non-aqueous electrolyte, is disclosed.
Type:
Application
Filed:
July 23, 2013
Publication date:
August 7, 2014
Applicant:
Samsung SDI Co., Ltd.
Inventors:
Soon-Rewl Lee, Ick-Kyu Choi, Young-Ki Kim, Young-Hun Lee, Na-Leum Yoo, Na-Ri Park, Yong-Chul Park
Abstract: Disclosed are a non-aqueous electrolytic solution that exhibits excellent electrochemical characteristics over a wide temperature range, and an electrochemical device using the non-aqueous electrolytic solution. The non-aqueous electrolytic solution includes a non-aqueous solvent and an electrolyte salt dissolved in the non-aqueous solvent, wherein the non-aqueous electrolytic solution further comprises one compound represented by general formula (I): wherein R1 represents alkyl having 1 to 6 carbon atoms, cycloalkyl having 3 to 6 carbon atoms, alkenyl having 2 to 6 carbon atoms, alkynyl having 3 to 6 carbon atoms, or aryl having 6 to 12 carbon atoms; X represents a divalent linking group that has 1 to 6 carbon atoms and is optionally substituted by a halogen atom; and Y1 represents a specific substituent, for example, alkylcarbonyl.
Abstract: The present invention provides a nonaqueous electrolyte solution, which can improve flame retardancy and ameliorate performances of a battery without deteriorating the basic battery performance as far as possible, and a secondary battery. The nonaqueous electrolyte solution is a nonaqueous electrolyte solution for a secondary battery that contains metal salts including ions of metals belonging to group 1 or 2 of the periodic table and a specific cyclic compound having phosphorus and nitrogen atoms in a non-protonic solvent. The non-protonic solvent is a solvent that contains at least one kind of carboxylic acid ester compound and carbonic acid ester compound, and a ratio (MPN/Ms) between a mass (Ms) of the non-protonic solvent containing the metal salts and a mass (MPN) of the cyclic compound is 0.01 to 1.
Abstract: Provided is a secondary battery containing polyalkyleneglycol diglycidylether represented by formula I added in a predetermined amount to an electrolyte for the battery. The secondary battery containing the above additive exhibits remarkably improved high-temperature characteristics, prevents deterioration in rate characteristics and cycle characteristics, and considerably reduces thickness swelling of the battery so as to prevent battery leakage, ultimately enhancing safety of the battery.
Type:
Grant
Filed:
November 7, 2008
Date of Patent:
June 24, 2014
Assignee:
LG Chem, Ltd.
Inventors:
Suyoung Ryu, Dongmyung Kim, Eun young Kim
Abstract: An electrolytic solution including a solvent including 4,5-difluoro-1,3-dioxolane-2-one. The content of 4,5-difluoro-1,3-dioxolane-2-one is preferably within a range from 5 wt % to 50 wt % In the case where 4,5-difluoro-1,3-dioxolane-2-one is mixed and used with 4-fluoro-1,3-dioxolane-2-one, the content of 4,5-difluoro-1,3-dioxolane-2-one is preferably within a range from 5 vol ppm to 2000 vol ppm.
Abstract: Disclosed is an electrochemical cell comprising a lithium anode and a sulfur-containing cathode and a non-aqueous electrolyte. The cell exhibits high utilization of the electroactive sulfur-containing material of the cathode and a high charge-discharge efficiency.
Abstract: A method for preparing an ionic liquid nanoscale ionic material, the ionic liquid nanoscale ionic material and a battery that includes a battery electrolyte that comprises the ionic liquid nanoscale ionic material each provide superior performance. The superior performance may be manifested within the context of inhibited lithium dendrite formation.
Type:
Application
Filed:
July 10, 2012
Publication date:
June 5, 2014
Applicant:
CORNELL UNIVERSITY
Inventors:
Lynden A. Archer, Surya S. Moganty, Yingying Lu
Abstract: The battery includes an electrolyte activating one or more cathodes and one or more anodes. The electrolyte includes one or more salts in a solvent. The solvent includes one or more organic solvents and one or more silanes and/or one or more siloxanes.
Abstract: The invention is directed in a first aspect to an ionic liquid of the general formula Y+Z?, wherein Y+ is a positively-charged component of the ionic liquid and Z? is a negatively-charged component of the ionic liquid, wherein Z? is a boron-containing anion of the following formula: The invention is also directed to electrolyte compositions in which the boron-containing ionic liquid Y+Z? is incorporated into a lithium ion battery electrolyte, with or without admixture with another ionic liquid Y+X? and/or non-ionic solvent and/or non-ionic solvent additive.
Abstract: An organic electrolyte including a lithium salt; an organic solvent; and a flavone-based or flavanon-based compound, and a lithium battery including the organic electrolyte.
Type:
Grant
Filed:
February 2, 2011
Date of Patent:
April 1, 2014
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Dong-joon Lee, Young-gyoon Ryu, Seok-soo Lee, Dong-min Im
Abstract: An electrolyte for a lithium-sulphur battery, the electrolyte comprising a solution of at least one electrolyte salt in at least two aprotic solvents. The components of the solution may be selected so that the solution is eutectic or close to eutectic. Also disclosed is a lithium-sulphur battery including such an electrolyte. By using a eutectic mixture, the performance of the electrolyte and the battery at low temperatures is much improved.
Abstract: Method of forming lithium-containing electrolytes are provided using wet chemical synthesis. In some examples, the lithium containing electrolytes are composed of ?-Li3PS4 or Li4P2S7. The solid electrolyte may be a core shell material. In one embodiment, the core shell material includes a core of lithium sulfide (Li2S), a first shell of ?-Li3PS4 or Li4P2S7, and a second shell including one of ?-Li3PS4 or Li4P2S7 and carbon. The lithium containing electrolytes may be incorporated into wet cell batteries or solid state batteries.
Type:
Application
Filed:
November 26, 2013
Publication date:
March 20, 2014
Applicant:
UT-Battelle, LLC
Inventors:
Chengdu Liang, Zengcai Liu, Wujun Fu, Zhan Lin, Nancy J. Dudney, Jane Y. Howe, Adam J. Rondinone
Abstract: Disclosed is an inhibitor of the reduction of life cycle of a redox shuttle additive that undergoes oxidation-reduction cycling, the inhibitor being at least of one compound selected from the group consisting of vinylene carbonates, ethylene carbonates, cyclic sulfites and unsaturated sultones. Also, Disclosed is a non-aqueous electrolyte and secondary battery comprising the same inhibitor.
Type:
Grant
Filed:
March 5, 2013
Date of Patent:
March 18, 2014
Assignee:
LG Chem, Ltd.
Inventors:
Soon Ho Ahn, Sung Hoon Yu, Byung Hoon Oh, Joo Mi Jeon
Abstract: A separator for a battery having a porous base material layer and a polymer coating layer formed on at least a surface of the base material layer. The polymer coating layer includes a first fluorinated copolymer and a non-fluorinated polymer. A weight ratio of the first fluorinated copolymer to the non-fluorinated polymer is in a range of 3:1 to 1:3.
Abstract: The present invention relates to a lithium secondary battery. The present invention provides the lithium secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte solution. The negative electrode includes a water-dispersible binder and a conduction agent. The non-aqueous electrolyte solution includes fluoroethylenecarbonate (FEC). The batteries of the present invention are advantageous in that they have a high efficiency charging lifespan characteristic and enable high capacity charging in a short time.
Type:
Grant
Filed:
October 21, 2010
Date of Patent:
January 28, 2014
Assignee:
LG Chem, Ltd.
Inventors:
Kwan Soo Lee, Cha Hun Ku, Duk Hyun Ryu, Jung Jin Kim, Byung Kyu Jung
Abstract: Provided is a lithium secondary cell of 5V class having a positive electrode operating voltage of 4.5V or higher with respect to metallic lithium; the lithium secondary cell has high energy density, inhibits degradation of the electrolytic solution that comes in contact with the positive electrode and the negative electrode, and has particularly long cell life when used under high-temperature environments.
Abstract: An electrolyte includes a lithium polysulfide of formula Li2Sx, where x>2; a shuttle inhibitor; and a non-aqueous solvent. Lithium-sulfur batteries may incorporate such electrolytes.
Abstract: Representative embodiments provide a liquid or gel separator utilized to separate and space apart first and second conductors or electrodes of an energy storage device, such as a battery or a supercapacitor. A representative liquid or gel separator comprises a plurality of particles, typically having a size (in any dimension) between about 0.5 to about 50 microns; a first, ionic liquid electrolyte; and a polymer. In another representative embodiment, the plurality of particles comprise diatoms, diatomaceous frustules, and/or diatomaceous fragments or remains. Another representative embodiment further comprises a second electrolyte different from the first electrolyte; the plurality of particles are comprised of silicate glass; the first and second electrolytes comprise zinc tetrafluoroborate salt in 1-ethyl-3-methylimidalzolium tetrafluoroborate ionic liquid; and the polymer comprises polyvinyl alcohol (“PVA”) or polyvinylidene fluoride (“PVFD”).
Type:
Application
Filed:
August 9, 2012
Publication date:
January 16, 2014
Applicant:
NTHDEGREE TECHNOLOGIES WORLDWIDE INC.
Inventors:
Vera Nicholaevna Lockett, Mark D. Lowenthal, Neil O. Shotton, William Johnstone Ray, Theodore I. Kamins
Abstract: In certain embodiments, a battery component comprises an electrode and a separator deposited on a surface of the electrode is provided. The separator comprises a porous poly(para-xylylene) film. In some embodiments, the electrode can include at least one cavity or protrusion, and the separator layer can be gas phase deposited directly on the electrode. In certain embodiments, methods of making a battery component are also provided.
Type:
Grant
Filed:
January 11, 2013
Date of Patent:
December 10, 2013
Assignee:
Enevate Corporation
Inventors:
Benjamin Yong Park, Alexander Gorkovenko, Rabih Bachir Zaouk, William Hubert Schank, Jr.
Abstract: The present invention provides a lithium-ion electrochemical cell comprising an ionic liquid electrolyte solution and a positive electrode having a carbon sheet current collector.
Type:
Application
Filed:
May 13, 2013
Publication date:
December 5, 2013
Inventors:
Hongli Dai, Michael Erickson, Marc Juzkow
Abstract: The electrolyte for a lithium ion secondary battery includes a lithium salt, a non-aqueous organic solvent, gamma-butyrolactone and a wettability activator. The electrolyte for a lithium ion secondary battery provides excellent life characteristics and high-temperature stability and shows improved electrolyte pourability.
Abstract: A non-aqueous electro-chemical battery and a method of preparation thereof, wherein the electro-chemical battery comprises an anode current collector, a cathode, electrolyte solution and a separator, wherein the anode current collector contains anode coating and the anode current collector as a whole acts as an anode; both the anode current collector and the cathode are provided with tabs; the cathode is made of lithium metal or lithium-aluminum alloy; ratio of capacity of the anode per unit area to capacity of the cathode per unit area is less than 1.0; ratio of theoretical total capacity of the anode to the theoretical total capacity of the cathode is greater than 1.0. According to the method of preparing the battery, when the anode, the cathode and the separator are placed one over another, a front end of the anode and a front end of the cathode is placed in staggered positions.
Abstract: The present invention provides a nonaqueous electrolytic solution in which an electrolyte salt is dissolved in a nonaqueous solvent, containing 0.01% to 30% by weight of a 1,2-cyclohexanediol derivative having a specific structure; and a lithium secondary battery using the nonaqueous electrolytic solution. The lithium secondary battery exhibits excellent battery characteristics such as electrical capacity, cycle property, and storage property and can maintain excellent long-term battery performance.
Type:
Grant
Filed:
August 10, 2006
Date of Patent:
October 29, 2013
Assignee:
Ube Industries, Ltd.
Inventors:
Koji Abe, Kazuhiro Miyoshi, Chisen Hashimoto, Masahide Kondo
Abstract: A positive electrode active material has an average particle diameter of 4.5 to 15.5 ?m and a specific surface area of 0.13 to 0.80 m2/g. A positive electrode mixture layer contains at least one of a silane coupling agent and/or at least one of aluminum, titanium, or zirconium based coupling agent having an alkyl or an alkoxy groups having 1 to 18 carbon atoms at a content of 0.003% by mass or more and 5% by mass or less with respect to the mass of the positive electrode active material. The nonaqueous electrolyte contains a 1,3-dioxane derivative at a content of 0.05% by mass or more with respect to the total mass of the nonaqueous electrolyte. Thus a nonaqueous secondary battery that has good high-temperature cycle characteristics and suppresses an increase in self-discharge after repetition of charge and discharge cycles at high temperature is provided.
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.
Abstract: Disclosed is a secondary battery including a cathode, an anode, a separator, and an electrolyte, wherein the electrolyte includes a ternary eutectic mixture prepared by adding (c) a carbonate-based compound to a eutectic mixture containing (a) an amide group-containing compound and (b) an ionizable lithium salt, and the carbonate-based compound is included in an amount of less than 50 parts by weight based on 100 parts by weight of the electrolyte. The use of the disclosed ternary eutectic mixture having flame resistance, chemical stability, high conductivity, and a broad electrochemical window, as the electrolyte material, improves both the thermal stability and quality of the battery.
Type:
Grant
Filed:
April 10, 2008
Date of Patent:
October 1, 2013
Assignee:
LG Chem, Ltd.
Inventors:
Jiwon Park, Jae Seung Oh, Byoung-bae Lee, Shin Jung Choi, Jaeduk Park
Abstract: The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising a pyrimidine-based compound, a non-fluorinated solvent and a fluorinated solvent; and a lithium secondary battery using the same.
Type:
Application
Filed:
May 6, 2013
Publication date:
September 26, 2013
Applicant:
LG CHEM, LTD.
Inventors:
Sung-Hoon Yu, Doo Kyung Yang, Min-Jung Jou, Yoo-Seok Kim, Yoo-Sun Kang
Abstract: A non-aqueous electrolyte solution for a lithium secondary battery comprises a lithium salt and an organic solvent. The non-aqueous electrolyte solution further comprises a specific siloxane compound and a sulfonate compound. This non-aqueous electrolyte solution solves the capacity degradation phenomenon, which appears in a lithium secondary battery using a non-aqueous electrolyte solution containing only a specific siloxane compound when the lithium secondary battery is used for a long time, so this non-aqueous electrolyte solution is especially useful for high-capacity batteries.
Type:
Grant
Filed:
April 29, 2010
Date of Patent:
September 17, 2013
Assignee:
LG Chem, Ltd.
Inventors:
Soo-Jin Kim, Jeong-Ju Cho, Su-Jin Yoon, Yong-Joon Ha, Chul-Haeng Lee, Jeong-Hwan Koh
Abstract: Provided are a nonaqueous electrolyte solution having improved durability properties in terms of cycling, storage and the like and improved discharge characteristic at a high current density, and a nonaqueous electrolyte battery that uses that nonaqueous electrolyte solution. The nonaqueous electrolyte solution containing a lithium salt and a nonaqueous solvent that dissolves the lithium salt, wherein the nonaqueous electrolyte solution contains a compound represented by formula (1) and at least one compound selected from the group consisting of a compound having a cyano group, a cyclic ester compound having a sulfur atom and a compound having an isocyanate group.
Abstract: A nonaqueous electrolytic solution secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent. The nonaqueous solvent contains 80% by mass or more of a cyclic carbonate which does not have a carbon-carbon multiple bond and which does not contain a halogen and contains a cyclic sulfone compound having any one of structures represented by the following formulae (1) to (4): wherein each of R1 and R2 represents CmH2m where 1?m?4. Also, each of R3 to R10 independently represents CnH2n+1 where 1?n?4.
Abstract: An organic electrolyte for magnesium batteries including an ether solvent; a magnesium compound represented by Formula 1 dissolved in the ether solvent; and a Lewis acid: wherein CY1 is an optionally substituted C6-C50 aromatic ring, X1 is, each independently, an electron withdrawing group, X2 is a halogen, n is an integer of 1 to 10, and an angle between a CY1-X1 bond and a CY1-Mg bond is 150 degrees or less.
Abstract: Disclosed is an inhibitor of the reduction of life cycle of a redox shuttle additive that undergoes oxidation-reduction cycling, the inhibitor being at least of one compound selected from the group consisting of vinylene carbonates, ethylene carbonates, cyclic sulfites and unsaturated sultones. Also, Disclosed is a non-aqueous electrolyte and secondary battery comprising the same inhibitor.
Type:
Grant
Filed:
October 24, 2006
Date of Patent:
July 9, 2013
Assignee:
LG Chem, Ltd.
Inventors:
Soon Ho Ahn, Sung Hoon Yu, Byung Hoon Oh, Joo Mi Jeon
Abstract: An energy storage device including an active electrolyte, a first electrode and a second electrode is provided. The active electrolyte contains protons and ion pairs with a redox ability. The first electrode and the second electrode coexist in the active electrolyte and are separated from each other. The first electrode and the second electrode respectively include an active material producing a redox-reaction with the active electrolyte or an active material producing ion adsorption/desorption with the active electrolyte. The active electrolyte receives electrons from the first electrode and/or the second electrode so as to perform a redox-reaction for charge storage.
Type:
Application
Filed:
July 30, 2012
Publication date:
June 27, 2013
Applicant:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventors:
Li-Duan Tsai, Chung-Hsiang Chao, Jenn-Yeu Hwang, Chun-Lung Li
Abstract: The invention relates to electrochemical cells having a jellyroll electrode assembly that includes a lithium-based negative electrode, a positive electrode with a coating comprising greater than about 94 wt. % of iron disulfide.
Abstract: A non-aqueous electrolyte can suppress decomposition of a solvent, improve the cycle life of a secondary battery, suppress the rise of resistance of a secondary battery and improve the capacity maintenance ratio of a secondary battery.
Abstract: A lithium/oxygen battery includes a lithium anode, an air cathode, and a non-aqueous electrolyte soaked in a microporous separator membrane, wherein non-aqueous electrolyte comprises a lithium salt with a general molecular formula of LiBF3X (X?F, Cl, or Br, respectively) and a non-aqueous solvent mixture.
Type:
Application
Filed:
November 28, 2011
Publication date:
May 30, 2013
Applicant:
U.S Government as represented by the Secretary of the Army
Inventors:
Shengshui Zhang, Donald L. Foster, Jeffrey A. Read
Abstract: A magnesium battery electrode assembly is described, including a current collector comprising a metal, an overlayer material on the metal and an electrode layer comprising an electrode active material disposed on the current collector. The overlayer material passivates the metal, or inhibits a corrosion reaction that would occur between the metal and an electrolyte in the absence of the overlayer material.
Type:
Application
Filed:
December 21, 2012
Publication date:
May 9, 2013
Applicant:
PELLION TECHNOLOGIES, INC.
Inventors:
Robert Ellis Doe, Kristin A. Persson, David Eaglesham, Andrew Gmitter
Abstract: The invention relates to an electrochemical lithium accumulator comprising at least one first electrochemical cell and at least one second electrochemical cell separated from each other by a current-collecting substrate, which substrate supports on a first face, an electrode of said first electrochemical cell, and on its second face opposite to said first face, an electrode of opposite sign of said second electrochemical cell, each cell comprising a positive electrode and a negative electrode separated by an electrolyte, characterized inter alio in that said current-collecting substrate is in copper or in copper alloy.
Type:
Application
Filed:
June 15, 2011
Publication date:
April 25, 2013
Applicant:
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Abstract: A cathode material suitable for use in non-aqueous electrochemical cells that includes copper manganese vanadium oxide and, optionally, fluorinated carbon. A non-aqueous electrochemical cell comprising such a cathode material, and a non-aqueous electrochemical cell that additionally includes a lithium anode.
Type:
Application
Filed:
August 29, 2012
Publication date:
March 14, 2013
Applicant:
EAGLEPICHER TECHNOLOGIES, LLC
Inventors:
Ernest NDZEBET, Joshua DEAN, Mario DESTEPHEN, Umamaheswari JANAKIRAMAN, Gregory MILLER, Min Qi YANG
Abstract: A secondary battery capable of improving the cycle characteristics and the storage characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution contains a solvent contains a sulfone compound having a structure in which —S(?O)2—S—C(?O)— bond is introduced to a benzene skeleton and an ester carbonate halide.
Abstract: A battery capable of obtaining the high energy density and obtaining the superior cycle characteristics is provided. In an anode, the thickness of a single face of an anode active material layer containing a carbon material as an anode active material is from 75 ?m to 120 ?m. An electrolytic solution contains difluoroethylene carbonate as a solvent. Thereby, the energy density of the anode is improved, and the diffusion and the acceptance of lithium ions in the anode are improved.
Abstract: The present invention provides an electrolyte solvent for batteries, which comprises fluoroethylene carbonate and linear ester solvent. Also, the present invention provides a lithium secondary battery comprising a positive electrode, a negative electrode and an electrolyte, wherein the electrolyte comprises fluoroethylene carbonate and linear ester solvent. The inventive electrolyte solvent can improve the battery safety without deteriorating the battery performance.
Type:
Grant
Filed:
March 20, 2012
Date of Patent:
February 12, 2013
Assignee:
LG Chem, Ltd.
Inventors:
Keun Yung Im, Ki Young Lee, Joon Sung Bae, Young Taek An
Abstract: The present invention provides an electrolyte for lithium secondary batteries that allows the batteries to operate safely at a charging voltage up to 4.35V, wherein the electrolyte comprises a combination of a fluoroethylene carbonate compound and a linear ester compound as solvent. Also, the present invention provides a lithium secondary battery that can operate at a charging voltage up to 4.35V, which comprises a positive electrode, a negative electrode and an electrolyte, wherein the electrolyte comprises fluoroethylene carbonate compound and linear ester compound as solvent.
Type:
Grant
Filed:
August 16, 2010
Date of Patent:
February 5, 2013
Assignee:
LG Chem, Ltd.
Inventors:
Keun Yung Im, Ki Young Lee, Joon Sung Bae, Young Tack An
Abstract: An electrolyte for the lithium secondary battery having flame retardancy, low negative electrode interfacial resistance, and excellent high temperature properties and life characteristics, and a lithium secondary battery including the same. An electrolyte for lithium secondary battery of the present invention may include a non-aqueous organic solvent, a lithium salt, fluorinated ether or phosphazene, and a resistance-improving additive represented as the following chemical formula (1): RSO2—R1—SO2F??[Chemical Formula 1] wherein R1 is a C1-C12 hydrocarbon unsubstituted or substituted with at least one fluorine.
Type:
Application
Filed:
October 3, 2011
Publication date:
January 31, 2013
Applicant:
SAMSUNG SDI, CO., LTD.
Inventors:
Sinyoung Park, Yongbeom Lee, Sunyoung Kim, Bora Lee
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:
Grant
Filed:
November 24, 2009
Date of Patent:
January 8, 2013
Assignee:
The Gillette Company
Inventors:
Nikolai Nikolaevich Issaev, Michael Pozin, Michael Dean Sliger, Eric Navok, Fred Joseph Berkowitz
Abstract: A battery electrolyte solution contains from 0.001 to 20% by weight of certain phosphorus-sulfur compounds. The phosphorus-sulfur compound performs effectively as a solid-electrolyte interphase (SEI) forming material. The phosphorus-sulfur compound has little adverse impact on the electrical properties of the battery, and in some cases actually improves battery performance. Batteries containing the electrolyte solution form robust and stable SEIs even when charged at high rates during initial formation cycles.
Type:
Application
Filed:
November 16, 2009
Publication date:
December 13, 2012
Inventors:
Houxiang Tang, William J. Kruper, JR., Ravi B. Shankar, Deidre A. Strand, Peter M. Margl, Andrew J. Pasztor, JR., David R. Wilson, Jerey R. Stajdi
Abstract: A secondary battery includes: a positive electrode, a negative electrode, and an electrolytic solution containing a nitrogen-containing aromatic compound, wherein the nitrogen-containing compound contains an aromatic skeleton containing one or two or more aromatic rings and one or two or more nitrogen-containing functional groups bonded to the one or two or more aromatic rings and represented by the following formula (1) (Y?X?N—??(1) wherein X represents C or P; Y represents a group constituted of one kind or two or more kinds of elements selected from the group consisting of H, C, N, O, S, F, Cl, Br, and I, provided that arbitrary two or more of X and Y may be bonded to each other to form a ring structure; and z is 2 or 3.
Abstract: An electrochemical cell includes a cathode capable of reversibly releasing and receiving an alkali metal; an anode capable of reversibly releasing and receiving the alkali metal; and a non-aqueous electrolyte including one or more dissolved lithium salts, one or more nitriles, sulfur dioxide, and one or more other polar aprotic solvents.