Plural Cyclic Carbonate Solvents Patents (Class 429/331)
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Publication number: 20150140444Abstract: A lithium ion battery that has a 5 V stabilized manganese cathode and a nonaqueous electrolyte comprising a phosphate additive is described. The lithium ion battery operates with a high voltage cathode (i.e. up to about 5 V) and has improved cycling performance at high temperature.Type: ApplicationFiled: March 8, 2013Publication date: May 21, 2015Inventors: Charles J. Dubois, Viacheslav A. Petrov
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Patent number: 9029021Abstract: A method of charging and discharging a battery that includes an anode. The anode includes silicon and is capable of inserting and extracting lithium. At the time of charge, the potential of the anode vs. lithium metal as a reference potential is 0.04 V or more. At the time of discharge, the potential of the anode vs. lithium metal as a reference potential is 1.4 V or less.Type: GrantFiled: April 16, 2010Date of Patent: May 12, 2015Assignee: Sony CorporationInventor: Tadahiko Kubota
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Publication number: 20150125759Abstract: An energy storage device comprising: (A) an anode comprising graphite; and (B) an electrolyte composition comprising: (i) at least one carbonate solvent; (ii) an additive selected from CsPF6, RbPF6, Sr(PF6)2, Ba(PF6)2, or a mixture thereof; and (iii) a lithium salt.Type: ApplicationFiled: January 12, 2015Publication date: May 7, 2015Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Wu Xu, Hongfa Xiang, Jiguang Zhang, Ruiguo Cao
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Publication number: 20150118576Abstract: A non-aqueous electrolyte secondary battery which is one example of an embodiment of the present disclosure is a non-aqueous electrolyte secondary battery including a non-aqueous electrolyte which contains a non-aqueous solvent. The non-aqueous solvent contains a fluoroethylene carbonate, a difluorobutylene carbonate, and at least one of a fluorinated chain carbonate and a fluorinated chain carboxylic acid ester, total volumetric contents of which is more than 50 percent with respect to the total volume of the non-aqueous solvent.Type: ApplicationFiled: October 12, 2014Publication date: April 30, 2015Inventors: TAKANOBU CHIGA, TAKASHI TAKEUCHI
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Publication number: 20150118575Abstract: A rechargeable lithium battery including a negative electrode including a negative active material, a positive electrode, and an electrolyte solution including an additive, wherein the negative active material includes a Si-based material included in an amount of about 1 to about 70 wt % based on the total amount of the negative electrode, and the additive includes fluoroethylene carbonate and a compound represented by Chemical Formula 1. In the above Chemical Formula 1, R1 to R3 are each independently a substituted or unsubstituted C2 to C5 alkylene group.Type: ApplicationFiled: September 4, 2014Publication date: April 30, 2015Inventors: Tae-Hyun Bae, Woo-Cheol Shin, Sang-Hyun Eom, Myung-Hoon Kim, Seung-Tae Lee, Ae-Ran Kim, Dong-Myung Choi, Ha-Rim Lee
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Publication number: 20150099191Abstract: A homologous series of cyclic carbonate or propylene carbonate (PC) analogue solvents with increasing length of linear alkyl substitutes were synthesized and used as co-solvents with PC for graphite based lithium ion half cells. A graphite anode reaches a capacity around 310 mAh/g in PC and its analogue co-solvents with 99.95% Coulombic efficiency. Cyclic carbonate co-solvents with longer alkyl chains are able to prevent exfoliation of graphite when used as co-solvents with PC. The cyclic carbonate co-solvents of PC compete for solvation of Li ion with PC solvent, delaying PC co-intercalation. Reduction products of PC on graphite surfaces via single-electron path form a stable Solid Electrolyte Interphase (SEI), which allows the reversible cycling of graphite.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Applicant: The Regents of the University of CaliforniaInventors: Gao Liu, Hui Zhao, Sang-Jae Park
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Patent number: 8980483Abstract: An electrolyte contains a solvent and an electrolyte salt. The solvent contains an organic acid and a sulfone compound in combination. The organic acid has a moiety containing an electron-withdrawing group such as a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—) in the center and hydroxyl groups (—OH) at both ends. The sulfone compound is a cyclic compound having a disulfonic anhydride group (—(O?)2S—O—S(?O)2—) or a carboxylic-sulfonic anhydride group (—(O?)2S—O—C(?O)—).Type: GrantFiled: January 13, 2010Date of Patent: March 17, 2015Assignee: Sony CorporationInventors: Masayuki Ihara, Shinya Wakita, Tadahiko Kubota
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Publication number: 20150072247Abstract: An electrolyte for a lithium battery, a lithium battery including the electrolyte, and a method of preparing the electrolyte for a lithium battery. The electrolyte for a lithium battery includes a non-aqueous organic solvent; and about 0.1 wt % to about 1 wt % of lithium nitrate (LiNO3) based on a total weight of the non-aqueous organic solvent. By using the electrolyte for a lithium battery, lifespan cycle properties of the lithium battery may be improved.Type: ApplicationFiled: July 28, 2014Publication date: March 12, 2015Inventors: In-Haeng Cho, Ha-Rim Lee, Sang-Hoon Kim, Woo-Cheol Shin, Jung-Hyun Nam
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Publication number: 20150064549Abstract: A rechargeable battery cell having a specific combination of anode, cathode and electrolyte formulation is provided. The electrolyte formulation includes an additive system and a salt system. The additive system includes a first additive containing a sulfonyl group, an anti-gassing agent, and a second additive. The salt system includes a lithium salt and a co-salt. The disclosed electrolyte formulation has reduced gassing and improved performance over a wide temperature range.Type: ApplicationFiled: November 7, 2014Publication date: March 5, 2015Inventors: Leslie J. Pinnell, Christopher Campion, Antoni S. Gozdz, Jeong Ju Cho
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Patent number: 8968938Abstract: Disclosed are a non-aqueous electrolyte comprising a lithium salt and a solvent, the electrolyte containing, based on the weight of the electrolyte, 10-40 wt % of a compound of Formula 1 or its decomposition product, and 1-40 wt % of an aliphatic nitrile compound, as well as an electrochemical device comprising the non-aqueous electrolyte. Also disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and an anode having formed thereon a coating layer containing a decomposition product of the compound of Formula 1. Moreover, disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and a non-aqueous electrolyte containing the compound of Formula 1 or its decomposition product.Type: GrantFiled: January 12, 2007Date of Patent: March 3, 2015Assignee: LG Chem, Ltd.Inventors: Young Soo Kim, Soon Ho Ahn, Joon Sung Bae, Cha Hun Ku, Soo Hyun Ha, Duk Hyun Ryu, Sei Lin Yoon
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Patent number: 8951676Abstract: An electrolyte for use in electrochemical cells is provided. The properties of the electrolyte include high conductivity, high Coulombic efficiency, and an electrochemical window that can exceed 3.5 V vs. Mg/Mg+2. The use of the electrolyte promotes the electrochemical deposition and dissolution of Mg without the use of any Grignard reagents, other organometallic materials, tetraphenyl borate, or tetrachloroaluminate derived anions. Other Mg-containing electrolyte systems that are expected to be suitable for use in secondary batteries are also described.Type: GrantFiled: March 14, 2013Date of Patent: February 10, 2015Assignee: Pellion Technologies, Inc.Inventors: Robert Ellis Doe, George Hamilton Lane, Robert E. Jilek, Jaehee Hwang
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Publication number: 20150037690Abstract: Electrolytes are described with additives that provide good shelf life with improved cycling stability properties. The electrolytes can provide appropriate high voltage stability for high capacity positive electrode active materials. The core electrolyte generally can comprise from about 1.1M to about 2.5M lithium electrolyte salt and a solvent that consists essentially of fluoroethylene carbonate and/or ethylene carbonate, dimethyl carbonate and optionally no more than about 40 volume percent methyl ethyl carbonate, and wherein the lithium electrolyte salt is selected from the group consisting of LiPF6, LiBF4 and combinations thereof. Desirable stabilizing additives include, for example, dimethyl methylphosphonate, thiophene or thiophene derivatives, and/or LiF with an anion complexing agent.Type: ApplicationFiled: August 2, 2013Publication date: February 5, 2015Inventors: Swapnil J. Dalavi, Shabab Amiruddin, Bing Li
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Patent number: 8945774Abstract: The present invention claims the addition of vinylene carbonate (VC) and optionally also fluoroethylene carbonate to the electrolyte of lithium ion cells having a structural silicon composite anode, i.e. an anode containing fibers or particles of silicon. The additive significantly improves the cycling performance of the cells. A VC content in the range 3.5-8 wt % based on the weight of the electrolyte has been found to be optimum.Type: GrantFiled: June 7, 2011Date of Patent: February 3, 2015Assignee: Nexeon Ltd.Inventors: Fazlil Coowar, Mamdouh Elsayed Abdelsalam, Michael Jonathan Lain
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Patent number: 8940443Abstract: An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.Type: GrantFiled: November 14, 2008Date of Patent: January 27, 2015Assignee: Greatbatch Ltd.Inventor: Chi-Kyun Park
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Patent number: 8936880Abstract: A cylindrical lithium secondary battery includes an anode and a cathode, capable of occluding or emitting lithium ions; a non-aqueous electrolyte; and a CID (Current Interrupt Device) for intercepting electric current and lowering inner pressure when the inner pressure of the secondary battery is increased. The cylindrical lithium secondary battery may ensure the safety of the battery with respect to overcharging and also at the same time prevent the problem wherein the CID is activated too early, such that the battery stops its operation when the battery is used in a high-temperature environment.Type: GrantFiled: February 12, 2009Date of Patent: January 20, 2015Assignee: LG Chem, Ltd.Inventors: Mi-Young Son, Jeong-Ju Cho, Ho-Chun Lee, Jong-Ho Jeon
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Patent number: 8932768Abstract: A method of manufacture an article of a cathode (positive electrode) material for lithium batteries. The cathode material is a lithium molybdenum composite transition metal oxide material and is prepared by mixing in a solid state an intermediate molybdenum composite transition metal oxide and a lithium source. The mixture is thermally treated to obtain the lithium molybdenum composite transition metal oxide cathode material.Type: GrantFiled: April 16, 2013Date of Patent: January 13, 2015Assignee: UChicago Argonne, LLCInventors: Sang-Ho Park, Khalil Amine
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Publication number: 20140377667Abstract: The invention relates to lithium-2-methoxy-1,1,2,2-tetrafluoro-ethanesulfonate, to the use thereof as conductive salt in lithium-based energy accumulators, and ionic liquids comprising 2-methoxy-1,1,2,2-tetrafluoro-ethanesulfonate as an anion.Type: ApplicationFiled: July 25, 2012Publication date: December 25, 2014Applicants: JACOBS UNIVERSITY BREMEN gGMBH, WESTFALISCHE WILHELMS UNIVERSITAT MUNSTERInventors: Gerd-Volker Roschenthaler, Martin Winter, Katja Vlasov, Nataliya Kalinovich, Christian Schreiner, Raphael Wilhelm Schmitz, Romek Ansgar Muller, Rene Schmitz, Alexandra Lex-Balducci, Miriam Kunze
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Patent number: 8916297Abstract: Provided are a method of preparing a gel polymer electrolyte secondary battery, and a gel polymer electrolyte secondary battery prepared by the method. The gel polymer electrolyte secondary battery includes a cathode, an anode, a separator and a gel polymer electrolyte in a battery case. The method includes (S1) coating a polymerization initiator on a surface of at least one selected from a group consisting of a cathode, an anode, a separator of a non-woven fabric, and a battery case, the surface needed to be contacted with a gel polymer electrolyte; (S2) putting an electrode assembly including the cathode, the anode, the separator of a non-woven fabric into the battery case; and (S3) forming a gel polymer electrolyte by introducing a gel polymer electrolyte composition including an electrolyte solvent, an electrolyte salt and a polymer electrolyte monomer into the battery case, and polymerizing the monomer.Type: GrantFiled: August 5, 2009Date of Patent: December 23, 2014Assignee: LG Chem, Ltd.Inventors: Sung-Hoon Yu, Ho-Chun Lee
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Publication number: 20140356733Abstract: Provided are an additive for a lithium battery electrolyte, wherein the additive is an ethylene carbonate based compound represented by the following Formula 1 or 2, an organic electrolyte solution including the additive, and a lithium battery including the organic electrolyte solution: in the above Formulae, R1, R2, R3, and R4 are each independently a non-polar functional group or a polar functional group, the polar functional group including a heteroatom belonging to groups 13 to 16 of the periodic table of elements, and one or more of R1, R2, R3, and R4 are the polar functional groups.Type: ApplicationFiled: May 5, 2014Publication date: December 4, 2014Applicant: Samsung SDI Co., Ltd.Inventors: Makhmut Khasanov, Woo-Cheol Shin, Vladimir Egorov, Pavel Alexandrovich Shatunov, Denis Chernyshov, Sang-Hoon Kim, Ha-Rim Lee, In-Haeng Cho, Alexey Tereshchenko
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Publication number: 20140349198Abstract: Provided are a non-aqueous electrolyte solution, which includes a non-aqueous organic solvent including propylene carbonate (PC) and an ester-based solvent, and lithium bis(fluorosulfonyl)imide (LiFSI), and a lithium secondary battery including the non-aqueous electrolyte solution. According to the non-aqueous electrolyte solution of the present invention, since a robust solid electrolyte interface (SEI) may be formed on an anode during initial charge of a lithium secondary battery including the non-aqueous electrolyte solution, high-temperature cycle characteristics and capacity characteristics after high-temperature storage as well as low-temperature, room temperature, and high-temperature output characteristics may be simultaneously improved.Type: ApplicationFiled: July 31, 2014Publication date: November 27, 2014Inventors: Young Min Lim, Chul Haeng Lee, Doo Kyung Yang, Shul Kee Kim
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Publication number: 20140342241Abstract: Provided are a non-aqueous electrolyte solution, which includes a non-aqueous organic solvent including propylene carbonate (PC) and ethylene carbonate (EC), and lithium bis(fluorosulfonyl)imide (LiFSI), and a lithium secondary battery including the non-aqueous electrolyte solution. The lithium secondary battery of the present invention may improve low-temperature and room temperature output characteristics, high-temperature and room temperature cycle characteristics, and capacity characteristics after high-temperature storage by forming a robust solid electrolyte interface (SEI) on an anode during initial charge of the lithium secondary battery.Type: ApplicationFiled: July 30, 2014Publication date: November 20, 2014Applicant: LG CHEM, LTD.Inventors: Young Min Lim, Chul Haeng Lee, Doo Kyung Yang, Shul Kee Kim
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Patent number: 8883356Abstract: Electrolyte and lithium secondary batteries containing the same are disclosed. In one instance, the electrolyte includes a lithium salt, a solvent and an additive. In some examples, the additive includes substances A, B and C, wherein substance A is vinylene carbonate, substance B includes at least one of fluorinated or chlorinated ethylene carbonate or diethylene carbonate, and substance C includes at least one of ethylene sulfite, 1,3-propanesultone and propenyl sulfite.Type: GrantFiled: June 11, 2009Date of Patent: November 11, 2014Assignee: BYD Company LimitedInventors: GuiShu Zhou, Lei Si, Yong Wang, YiWei Fan
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Publication number: 20140322616Abstract: A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt (total number of moles of lithium atoms: NLi) and a liquid composition, wherein the liquid composition comprises a specific fluorinated solvent (?) and a cyclic carboxylic acid ester compound (total number of moles: NA), and may contain a specific compound (?) (total number of moles: NB), the content of the fluorinated solvent (?) is from 40 to 80 mass %, NA/NLi is from 1.5 to 7.0, and (NA+NB)/NLi is from 3 to 7.0; and, a lithium ion secondary battery employing such a non-aqueous electrolyte solution for secondary batteries.Type: ApplicationFiled: March 27, 2014Publication date: October 30, 2014Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Yu ONOZAKI, Toyokazu ENTA, Masao IWAYA
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Publication number: 20140315104Abstract: Cathodes for lithium batteries contain a lithium-manganese cathodic material and from 0.5 to 20% by weight of lithium oxalate. Batteries containing the electrodes tend to exhibit high cycling capacities.Type: ApplicationFiled: November 30, 2012Publication date: October 23, 2014Inventors: Wenjuan Liu, Murali G. Theivanayagam, Koichi Numata, Ing-Feng Hu, David R. Wilson, Yiyong He
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Patent number: 8865353Abstract: A nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, containing a hydantoin compound represented by the following general formula (I) in an amount of from 0.01 to 5% by mass of the nonaqueous electrolytic solution, and excellent in battery characteristics such as high-temperature storage property and cycle property. (In the formula, R1 and R2 each represent a methyl group or an ethyl group; R3 and R4 each represent a hydrogen atom, a methyl group or an ethyl group.Type: GrantFiled: August 4, 2009Date of Patent: October 21, 2014Assignee: Ube Industries, Ltd.Inventors: Koji Abe, Masahide Kondo
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Patent number: 8852808Abstract: This invention provides a multi-layer article comprising a first electrode material, a second electrode material, and a porous separator disposed between and in contact with the first and the second electrode materials, wherein the porous separator comprises a nanoweb consisting essentially of a plurality of nanofibers of a fully aromatic polyimide. Also provided is a method for preparing the multi-layer article, and an electrochemical cell employing the same. A multi-layer article comprising a polyimide nanoweb with enhanced properties is also provided.Type: GrantFiled: June 26, 2013Date of Patent: October 7, 2014Assignee: E I du Ponte de Nemours and CompanyInventors: Pankaj Arora, Stephane Francois Bazzana, T Joseph Dennes, Eric P Holowka, Lakshmi Krishnamurthy, Stephen Mazur, Glen E Simmonds
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Publication number: 20140295288Abstract: A non-aqueous organic electrolyte including a lithium salt; a non-aqueous organic solvent, which includes ?-butyrolactone and a saturated cyclic ester compound shown in formula (I); an unsaturated cyclic ester compound shown in formula (II); and a dinitrile compound shown in formula (III), as well as a lithium ion secondary battery comprising same, which has excellent chemical stability and electrochemical stability and other desirable properties.Type: ApplicationFiled: June 17, 2014Publication date: October 2, 2014Inventor: Jie DING
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Patent number: 8846249Abstract: The positive electrode of a lithium ion secondary battery includes active material particles represented by LixNi1?yMyMezO2+?, and the active material particles include a lithium composite oxide represented by LixNi1?yMyO2, (where 0.95?x?1.1, 0<y?0.75, 0.001?z?0.05). The element M is selected from the group consisting of alkaline-earth elements, transition elements, rare-earth elements, IIIb group elements and IVb group elements. The element Me is selected from the group consisting of Mn, W. Nb, Ta, In, Mo, Zr and Sn, and the element Me is included in a surface portion of the active material particles. The lithium content x in the lithium composite oxide in an end-of-discharge state when a constant current discharge is performed at a temperature of 25° C. with a current value of 1C and an end-of-discharge voltage of 2.5 V satisfies 0.85?x??0.013Ln(z)+0.871.Type: GrantFiled: June 12, 2006Date of Patent: September 30, 2014Assignee: Panasonic CorporationInventor: Kensuke Nakura
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Publication number: 20140272604Abstract: Provided is an electrolyte solution additive including lithium difluorophosphate (LiDFP), a vinylene carbonate-based compound, and a sultone-based compound. Also, a non-aqueous electrolyte solution including the electrolyte solution additive and a lithium secondary battery including the non-aqueous electrolyte solution are provided. The lithium secondary battery including the electrolyte solution additive of the present invention may improve low-temperature output characteristics, high-temperature cycle characteristics, output characteristics after high-temperature storage, and swelling characteristics.Type: ApplicationFiled: May 29, 2014Publication date: September 18, 2014Applicant: LG CHEM, LTD.Inventors: Young Min Lim, Chul Haeng Lee, Doo Kyung Yang, Yu Ha An
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Publication number: 20140272605Abstract: Provided are a non-aqueous electrolyte solution which includes a lithium salt including lithium bis(fluorosulfonyl)imide (LiFSI) and an additive including a vinylene carbonate-based compound and a sultone-based compound, and a lithium secondary battery including the non-aqueous electrolyte solution. The lithium secondary battery including the non-aqueous electrolyte solution of the present invention may improve low-temperature output characteristics, high-temperature cycle characteristics, output characteristics after high-temperature storage, and capacity characteristics.Type: ApplicationFiled: June 2, 2014Publication date: September 18, 2014Applicant: LG CHEM, LTD.Inventors: Young Min Lim, Chul Haeng Lee, Doo Kyung Yang, Kyoung Ho Ahn, Gwang Yeon Kim
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Publication number: 20140234727Abstract: A nonaqueous electrolytic solution that is capable of improving the electrochemical characteristics in a broad temperature range, and an energy storage device using the same are provided, and the nonaqueous electrolytic solution contains a nonaqueous solvent having dissolved therein an electrolyte salt, in which the nonaqueous solvent contains two or more kinds of cyclic carbonates selected from ethylene carbonate, propylene carbonate, 1,2-butylene carbonate, 2,3-butylene carbonate, 4-fluoro-1,3-dioxolan-2-one, trans- or cis-4,5-difluoro-1,3-dioxolan-2-one, vinylene carbonate, vinyl ethylene carbonate and 4-ethynyl-1,3-dioxolan-2-one, and the nonaqueous electrolytic solution further contains a cyclic acid anhydride represented by the following general formula (I) having bonded thereto a side chain that has 3 or more carbon atoms and has a double bond or a triple bond at an end thereof in an amount of from 0.Type: ApplicationFiled: October 16, 2012Publication date: August 21, 2014Applicant: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Masahide Kondo
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Publication number: 20140234696Abstract: A non-aqueous secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution includes a non-aqueous solvent, an electrolyte salt, and one or both of a disulfonyl compound represented by a following Formula (1) and a disulfinyl compound represented by a following Formula (2), where R1 is one of a hydrocarbon group, a halogenated hydrocarbon group, an oxygen-containing hydrocarbon group, a halogenated oxygen-containing hydrocarbon group, and a group obtained by bonding two or more thereof to one another; and X1 is a halogen group, where R2 is one of a hydrocarbon group, a halogenated hydrocarbon group, an oxygen-containing hydrocarbon group, a halogenated oxygen-containing hydrocarbon group, and a group obtained by bonding two or more thereof to one another; and X2 is a halogen group.Type: ApplicationFiled: February 7, 2014Publication date: August 21, 2014Applicant: SONY CORPORATIONInventors: Tomomi Sakuma, Midori Sugawara, Toru Odani
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Patent number: 8808927Abstract: A lithium secondary battery comprises an anode capable of intercalating or disintercalating lithium ions, a cathode configured with a lithium-containing oxide, and a nonaqueous electrolyte solution. The lithium-containing oxide comprises a lithium nickel based oxide. The nonaqueous electrolyte solution comprises vinyl ethylene carbonate (VEC) and a mono-nitrile compound. This lithium secondary battery solves the deterioration of charge/discharge cycle characteristics caused by a lithium nickel based oxide used for a cathode, and also controls the decomposition reaction of electrolyte to solve the swelling phenomenon even though the battery is stored at a high temperature or charged/discharged in a fully-charged state, thereby improving high-temperature life characteristics.Type: GrantFiled: April 29, 2010Date of Patent: August 19, 2014Assignee: LG Chem, Ltd.Inventors: Jong-Ho Jeon, Soo-Jin Kim, Ho-Chun Lee
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Publication number: 20140220455Abstract: 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: ApplicationFiled: July 23, 2013Publication date: August 7, 2014Applicant: 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
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Patent number: 8795903Abstract: The invention discloses various embodiments of Li-ion electrolytes containing flame retardant additives that have delivered good performance over a wide temperature range, good cycle life characteristics, and improved safety characteristics, namely, reduced flammability. In one embodiment of the invention there is provided an electrolyte for use in a lithium-ion electrochemical cell, the electrolyte comprising a mixture of an ethylene carbonate (EC), an ethyl methyl carbonate (EMC), a fluorinated co-solvent, a flame retardant additive, and a lithium salt. In another embodiment of the invention there is provided an electrolyte for use in a lithium-ion electrochemical cell, the electrolyte comprising a mixture of an ethylene carbonate (EC), an ethyl methyl carbonate (EMC), a flame retardant additive, a solid electrolyte interface (SEI) film forming agent, and a lithium salt.Type: GrantFiled: August 18, 2009Date of Patent: August 5, 2014Assignee: California Institute of TechnologyInventors: Marshall C. Smart, Kiah A. Smith, Ratnakumar V. Bugga, Surya G. Prakash, Frederick Charles Krause
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Publication number: 20140212770Abstract: 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.Type: ApplicationFiled: August 3, 2012Publication date: July 31, 2014Applicant: Ulbe industries, Ltd.Inventors: Koji Abe, Kei Shimamoto
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Publication number: 20140205913Abstract: An electrolyte for a rechargeable lithium battery includes a lithium salt and a non-aqueous organic solvent. The non-aqueous organic solvent includes about 1 volume % to about 40 volume % of ethylene carbonate, about 1 volume % to about 50 volume % of ethyl propionate, about 1 volume % to about 50 volume % of diethyl carbonate, and about 1 volume % to about 40 volume % of propylene carbonate.Type: ApplicationFiled: December 19, 2013Publication date: July 24, 2014Applicant: SAMSUNG SDI CO., LTD.Inventors: Seong-Ah PARK, Hyun-Jun SHIN
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Patent number: 8771881Abstract: An electrolyte for a lithium ion secondary battery includes a non-aqueous organic solvent; a lithium salt; and a phosphonitrile fluoride trimer as an additive, and a lithium ion secondary battery comprising the same. The thickness increase rate of a lithium ion secondary battery including the electrolyte is reduced even when the battery is kept at a high temperature. Thus, the thermal stability and durability of the battery are prominently improved. The durability of the battery can be further improved by including a vinylene carbonate or ethylene carbonate group compound in the electrolyte.Type: GrantFiled: October 22, 2008Date of Patent: July 8, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Jinsung Kim, Narae Park, Jinhyunk Lim, Suhee Han, Jinbum Kim, Jungkang Oh
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Publication number: 20140186721Abstract: An electrolyte including an alkali metal salt; a polar aprotic solvent; and a triazinane trione; wherein the electrolyte is substantially non-aqueous.Type: ApplicationFiled: March 4, 2014Publication date: July 3, 2014Applicant: UCHICAGO ARGONNE, LLCInventors: Lu Zhang, Zhengcheng Zhang, Khalil Amine
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Publication number: 20140186722Abstract: Provided are a non-aqueous electrolyte solution including propylene carbonate (PC) and lithium bis(fluorosulfonyl)imide (LiFSI), and a lithium secondary battery including the non-aqueous electrolyte solution. The lithium secondary battery including the non-aqueous electrolyte solution of the present invention may improve low-temperature output characteristics, high-temperature cycle characteristics, output characteristics after high-temperature storage, capacity characteristics, and swelling characteristics.Type: ApplicationFiled: March 5, 2014Publication date: July 3, 2014Applicant: LG Chem, Ltd.Inventors: Young Min Lim, Chul Haeng Lee, Kyoung Ho Ahn, Doo Kyung Yang
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Publication number: 20140178770Abstract: The Coulombic efficiency of lithium deposition/stripping can be improved while also substantially preventing lithium dendrite formation and growth using particular electrolyte compositions. Embodiments of the electrolytes include organic solvents and their mixtures to form high-quality SEI layers on the lithium anode surface and to prevent further reactions between lithium and electrolyte components. Embodiments of the disclosed electrolytes further include additives to suppress dendrite growth during charge/discharge processes. The solvent and additive can significantly improve both the Coulombic efficiency and smoothness of lithium deposition. By optimizing the electrolyte formulations, practical rechargeable lithium energy storage devices with significantly improved safety and long-term cycle life are achieved. The electrolyte can also be applied to other kinds of energy storage devices.Type: ApplicationFiled: February 27, 2014Publication date: June 26, 2014Inventors: Wu Xu, Ji-Guang Zhang, Yaohui Zhang, Xilin Chen
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Patent number: 8758934Abstract: The present disclosure relates to an electrolyte for a lithium secondary battery, comprising a non-aqueous solvent, a lithium salt and an additive having a perfluoroalkyl group. By including the additive having a specific structure in the electrolyte, the output of the lithium secondary battery can be improved greatly.Type: GrantFiled: December 6, 2013Date of Patent: June 24, 2014Assignee: LG Chem, Ltd.Inventors: Kyoung Ho Ahn, Chul Haeng Lee, Min Jung Kim, Doo Kyung Yang
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Patent number: 8735005Abstract: Novel fluorinated cyclic carbonate compounds are described. These compounds may be useful as non-aqueous electrolyte solvents, specialty solvents, and starting materials and intermediates for synthesis of dyes, agricultural chemicals, and pharmaceuticals.Type: GrantFiled: April 1, 2011Date of Patent: May 27, 2014Assignee: E I du Pont de Nemours and CompanyInventors: William L. Holstein, Xudong Chen
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Publication number: 20140141342Abstract: The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, wherein the electrolyte comprises an organic solvent and an electrolyte additive, represented by chemical formula 1 and mixed lithium salts in the organic solvent so that room and high temperature life-time properties of the battery can be improved. Said chemical 1 is defined in the specification.Type: ApplicationFiled: July 12, 2012Publication date: May 22, 2014Inventors: Hyeong Kyu Lim, Hong Hie Lee, Eun Gi Shim, Jong Su Kim, Chang Sin Lee, Kyung Il Park, Hahn Mok Song
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Publication number: 20140134499Abstract: Disclosed are functionalized Group IVA particles, methods of preparing the Group IVA particles, and methods of using the Group IVA particles. The Group IVA particles may be passivated with at least one layer of material covering at least a portion of the particle. The layer of material may be a covalently bonded non-dielectric layer of material. The Group IVA particles may be used in various technologies, including lithium ion batteries and photovoltaic cells.Type: ApplicationFiled: August 21, 2013Publication date: May 15, 2014Inventors: Timothy D. Newbound, Leslie Matthews, Jeff A. Norris
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Patent number: 8722255Abstract: A non-aqueous electrolytic solution is advantageously used in preparation of a lithium secondary battery excellent in cycle characteristics. In the non-aqueous electrolytic solution for a lithium secondary battery, an electrolyte salt is dissolved in a non-aqueous solvent. The non-aqueous electrolytic solution further contains a vinylene carbonate compound in an amount of 0.01 to 10 wt. %, and an alkyne compound in an amount of 0.01 to 10 wt. %.Type: GrantFiled: March 27, 2012Date of Patent: May 13, 2014Assignee: Ube Industries, Ltd.Inventors: Koji Abe, Kazuhiro Miyoshi, Takaaki Kuwata
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Patent number: 8715865Abstract: Non-aqueous electrolyte solutions capable of protecting negative electrode materials such as lithium metal and carbonaceous materials in energy storage electrochemical cells (e.g., lithium metal batteries, lithium ion batteries and supercapacitors) include an electrolyte salt, a non-aqueous electrolyte solvent mixture, an unsaturated organic compound 4-methylene-1,3-dioxolan-2-one or 4,5-dimethylene-1,3-dioxolan-2-one, and other optional additives. The 1,3-dioxolan-2-ones help to form a good solid electrolyte interface on the negative electrode surface.Type: GrantFiled: July 11, 2007Date of Patent: May 6, 2014Assignee: BASF CorporationInventors: Wu Xu, Pascal Bolomey, Martin W. Payne
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Patent number: 8715864Abstract: An electrolytic solution and a battery capable of improving high temperature characteristics are provided. A separator (23) is impregnated with an electrolytic solution. The electrolytic solution includes 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 %, or 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.Type: GrantFiled: September 21, 2005Date of Patent: May 6, 2014Assignee: Sony CorporationInventors: Tadahiko Kubota, Hiroyuki Yamaguchi, Masayuki Ihara
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Patent number: 8715863Abstract: 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.Type: GrantFiled: March 22, 2007Date of Patent: May 6, 2014Assignee: Quallion LLCInventors: Zhengcheng Zhang, Phuong-Nghi Karen Lam, Mikito Nagata, Hisashi Tsukamoto
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Publication number: 20140106237Abstract: 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: ApplicationFiled: December 20, 2013Publication date: April 17, 2014Applicant: LG CHEM, LTD.Inventors: Kwan Soo LEE, Cha Hun KU, Duk Hyun RYU, Jung Jin KIM, Byung Kyu JUNG