Abstract: An electrolyte solution capable of constituting a secondary battery in which a volume change due to charge and discharge is small and cycle characteristics are excellent is provided. The present example embodiment relates to an electrolyte solution for a lithium ion secondary battery comprising a fluorinated ether and a cyclic dicarboxylic acid ester.

Abstract: Disclosed is a solid state electrolyte comprising a compound of Formula 1 Li7?a*??(b?4)*??xMa?La3Hf2??Mb?O12?x??Xx??(1) wherein Ma is a cationic element having a valence of a+; Mb is a cationic element having a valence of b+; and X is an anion having a valence of ?1, wherein, when Ma includes H, 0???5, otherwise 0???0.75, and wherein 0???1.5, 0?x?1.5, and (a*?+(b?4)?+x)>0, 0???1.

Abstract: The present invention relates to an electrode material for an electrochemical energy accumulator, in particular for a lithium-ion cell, comprising particles (10, 10?, 10?) of an active material (12) which can be lithiated, wherein the particles (10, 10?, 10?) are partially coated with a lithium-ion-conducting solid electrolyte (14), the solid electrolyte layer (14) having recesses (16).

Abstract: The present invention relates to a liquid electrolyte for a lithium-sulfur battery and a lithium-sulfur battery including the same. The liquid electrolyte for a lithium-sulfur battery according to the present invention exhibits excellent stability, and may improve a swelling phenomenon by suppressing gas generation during lithium-sulfur battery operation.

Abstract: An electrochemical cell in one embodiment includes a first negative electrode including a form of lithium, a positive electrode, and a first separator positioned between the first negative electrode and the positive electrode, wherein the positive electrode includes a plurality of coated small grains of Li2S.

Abstract: Electrolyte solutions including additives or combinations of additives that provide low temperature performance and high temperature stability in lithium ion battery cells.

Abstract: There is provided a secondary battery comprising: a positive electrode capable of intercalating and deintercalating a lithium ion; a negative electrode capable of intercalating and deintercalating a lithium ion; and an electrolytic solution, wherein the electrolytic solution comprises: a fluorine-containing cyclic ether compound represented by the following formula (1); and at least one selected from a fluorine-containing chain ether compound or a fluorine-containing phosphate ester compound; wherein R1 to R6 are each independently selected from a hydrogen atom, a fluorine atom, a chlorine atom, or a fluorine-substituted, chlorine-substituted, or unsubstituted alkyl group, and at least one of R1 to R6 is selected from a fluorine atom or a fluorine-substituted alkyl group.

Abstract: Disclosed is a cathode for a lithium sulfur battery comprising a sulfur-containing active material, an electrolyte in which a lithium salt is dissolved in an ether-based solvent, and an additional liquid active material in the form of Li2Sx (0<x?9) dissolved in the electrolyte, and a lithium sulfur battery using the same. The lithium sulfur battery of the present invention has a loading amount of cathode sulfur that is increased to at least about 13.5 mg/cm2 and a structural energy density that is increased from about 265 Wh/kg to at least about 355 Wh/kg as compared with a conventional battery.

Abstract: An electrolyte includes a solvent and an electrolyte salt. The solvent contains at least one selected from ester compounds, lithium monofluorophosphate, and lithium difluorophosphate, and at least one selected from anhydrous compounds. The ester compounds are chain compounds having ester moieties, such as (—O—C(?O)—O—R), at both ends. The anhydrous compounds are cyclic compounds having, for example, a disulfonic anhydride group, (—S(O?)2—O—S(O?)2—).

Abstract: Disclosed is an additive for an electrochemical cell wherein the additive includes an N—O bond. The additive is most preferably included in a nonaqueous electrolyte of the cell. Also disclosed are cells and batteries including the additive, and methods of charging the batteries and cells. An electrochemical cell including the additive preferably has an anode that includes lithium and a cathode including an electroactive sulfur-containing material.

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.

Abstract: Disclosed is an additive for an electrochemical cell wherein the additive includes an N—O bond. The additive is most preferably included in a nonaqueous electrolyte of the cell. Also disclosed are cells and batteries including the additive, and methods of charging the batteries and cells. An electrochemical cell including the additive preferably has an anode that includes lithium and a cathode including an electroactive sulfur-containing material.

Abstract: 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.

Abstract: An electrolyte including an alkali metal salt; a polar aprotic solvent; and a triazinane trione; wherein the electrolyte is substantially non-aqueous.

Abstract: A primary electrochemical cell and electrolyte incorporating a linear asymmetric ether is disclosed. The ether may include EME, used in combination with DIOX and DME, or have the general structural formula R1—O—CH2—CH2—O—R2 or R1—O—CH2—CH(CH3)—O—R2, where a total of at least 7 carbon atoms must be present in the compound, and R1 and R2 consist alkyl, cyclic, aromatic or halogenated groups but cannot be the same group (i.e., R1?R2).

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.

Abstract: The invention relates to a method for preparing a polyacrylonitrile-sulfur composite material, in which, polyacrylonitrile is converted to cyclized polyacrylonitrile, and the cyclized polyacrylonitrile is reacted with sulfur to form a polyacrylonitrile-sulfur composite material. By a separation of the preparation method into two partial reactions, the reaction conditions are advantageously able to be optimized for the respective reactions and a cathode material is able to be provided for alkali-sulfur cells with improved electrochemical properties. In addition, the invention relates to a polyacrylonitrile-sulfur composite material, a cathode material, an alkali-sulfur cell or an alkali-sulfur battery as well as to an energy store.

Abstract: 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.

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.

Abstract: The present application provides a nonaqueous electrolyte secondary battery that includes, a cathode capable of being electrochemically doped/dedoped with lithium, an anode capable of being electrochemically doped/dedoped with lithium, and an electrolyte placed between the cathode and the anode, wherein the electrolyte contains at least one of fluoro ethylene carbonate represented by Chemical Formula (1) and difluoro ethylene carbonate represented by Chemical Formula (2) as a solvent and the ratio of a discharge capacity B during discharging at a 5C rate to a discharge capacity A during discharging at a 0.2C rate ((B/A)×100) is 80% or more.

Abstract: Reducing an initial voltage degrades intermediate-load discharge performance. In a lithium primary battery containing iron disulfide as a positive electrode active material, a solvent of a nonaqueous electrolyte contains DIOX and DME as main components, and further contains THF. Moreover, the content of THF is 20 vol. % or lower.

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: 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 organic electrolyte solution includes a lithium salt; an organic solvent including a high permittivity solvent and a low boiling solvent; and a vinyl-based compound represented by Formula 1 below, wherein m and n are each independently integers of 1 to 10; X1, X2, and X3 each independently represent O, S, or NR9; and R1, R2, R3, R4, R5, R6, R7, R8, and R9 are represented in the detailed description. The organic electrolyte solution of the present invention and a lithium battery using the same suppress degradation of an electrolyte, providing improved cycle properties and life span thereof.

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”).

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.

Abstract: To provide a non-aqueous electrolyte solution for storage battery devices which has high lithium salt solubility, high conductivity and excellent cycle characteristics, and a storage battery device wherein such a non-aqueous electrolyte solution is used. A non-aqueous electrolyte solution for storage battery devices, which comprises a specific lithium salt (A) and a solvent (B) containing a hydrofluoroether (b1) represented by CF3CH2OCF2CF2H and a carbonate type solvent (b2), wherein the content of the hydrofluoroether (b1) is from 1 to 30 vol % based on the total amount i.e. 100 vol % of the solvent (B); and a storage battery device wherein such a non-aqueous electrolyte solution for storage battery devices is used.

Abstract: Disclosed are (1) a nonaqueous electrolytic solution for lithium battery comprising an electrolyte dissolved in a nonaqueous solvent, which contains at least one hydroxy acid derivative compound represented by the formulae (I) and (II) in an amount of from 0.

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.

Abstract: Disclosed is a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising the same. The non-aqueous electrolyte including an ionizable lithium salt and an organic solvent may further include (a) 1 to 10 parts by weight of a compound having a vinylene group or vinyl group per 100 parts by weight of the non-aqueous electrolyte, and (b) 10 to 300 parts by weight of a dinitrile compound having an ether bond per 100 parts by weight of the compound having the vinylene group or vinyl group. The lithium secondary battery comprising the non-aqueous electrolyte may effectively suppress the swelling and improve the charge/discharge cycle life.

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 non-aqueous electrolyte is provided that includes a non-aqueous solvent and an electrolyte salt, wherein the non-aqueous solvent contains a fluorinated ether (1) represented by the following Formula: HCF2CF2CF2CH2—O—CF2CF2H (1). This non-aqueous electrolyte has good wettability to a polyolefin separator, can provide a battery with excellent load characteristics for a long period, does not easily decompose in the battery under high-temperature storage, and causes little gas generation due to decomposition. Furthermore, a non-aqueous electrolyte secondary battery is provided that includes a positive electrode, a negative electrode, a separator, and the above-described non-aqueous electrolyte.

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.

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.

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.

Abstract: Reducing an initial voltage degrades intermediate-load discharge performance. In a lithium primary battery containing iron disulfide as a positive electrode active material, a solvent of a nonaqueous electrolyte contains DIOX and DME as main components, and further contains THF. Moreover, the content of THF is 20 vol. % or lower.

Abstract: A gel polymer electrolyte precursor and a rechargeable cell comprising the same are provided. The gel polymer electrolyte precursor comprises a bismaleimide monomer or bismaleimide oligomer, a compound having formula (I): a non-aqueous metal salt electrolyte, a non-protonic solvent, and a free radical initiator, wherein the bismaleimide oligomer is prepared by reaction of barbituric acid and bismaleimide, X comprises oxygen, organic hydrocarbon compounds, organic hydrocarbon oxide compounds, oligomers or polymers, n is 2 or 3, and A independently comprises wherein m is 0˜6, X comprises hydrogen, cyano, nitro or halogen, and R1 independently comprises hydrogen or C1˜4 alkyl.

Abstract: Disclosed are an electrode active material for a power storage device and a power storage device including the same. The electrode active material includes a polymer that includes: a tetravalent group derived from a compound selected from the group consisting of EBDT and derivatives thereof, TTF and derivatives thereof, a condensation product of EBDT and TTF and derivatives thereof, and a TTF dimer and derivatives thereof; and a divalent group —S-A-S— where A is a divalent aliphatic group or a divalent group represented by the formula -E-D-E- where D represents a divalent alicyclic group, a divalent aromatic group, or a carbonyl group, and two Es each independently represent a divalent aliphatic group. Adjacent two tetravalent groups mentioned above are linked by one or two divalent groups mentioned above.

Abstract: Spiro ammonium salts as an additive for electrolytes in electric current producing cells, in particular electric current producing cells comprising a Li-based anode, are provided. In some embodiments, the electric current producing cell comprises a cathode, a Li-based anode, and at least one electrolyte wherein the electrolyte contains at least one spiro ammonium salt.

Abstract: An organic electrolyte solution includes a lithium salt; an organic solvent including a high permittivity solvent and a low boiling solvent; and a vinyl-based compound represented by Formula 1 below, wherein m and n are each independently integers of 1 to 10; X1, X2, and X3 each independently represent O, S, or NR9; and R1, R2, R3, R4, R5, R6, R7, R8, and R9 are represented in the detailed description. The organic electrolyte solution of the present invention and a lithium battery using the same suppress degradation of an electrolyte, providing improved cycle properties and life span thereof.

Abstract: A nonaqueous electrolyte having maleimide additives and rechargeable cells employing the same are provided. The nonaqueous electrolyte having maleimide additives comprises an alkali metal electrolyte, a nonaqueous solvent, and maleimide additives. Specifically, the maleimide additives comprise maleimide monomer, bismaleimide monomer, bismaleimide oligomer, or mixtures thereof. The maleimide additives comprise functional groups, such as a maleimide double bond, phenyl group carboxyl, or imide, enhancing the charge-discharge efficiency, safety, thermal stability, chemical stability, flame-resistance, and lifespan of the secondary cells of the invention.

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.

Abstract: An electrochemical cell including at least one nitrogen-containing compound is disclosed. The at least one nitrogen-containing compound may form part of or be included in: an anode structure, a cathode structure, an electrolyte and/or a separator of the electrochemical cell. Also disclosed is a battery including the electrochemical cell.

Abstract: Disclosed is a lithium battery including: a positive electrode including manganese dioxide as a positive electrode active material; a negative electrode including at least one selected from lithium metal and a lithium alloy, as a negative electrode active material; a porous insulating member interposed between the positive electrode and the negative electrode; and an organic electrolyte. The organic electrolyte contains 0.0008 to 1.2% by weight of an alkyl ester of an aliphatic hydroxycarboxylic acid. The alkyl ester may be a C1-6 alkyl ester of an aliphatic hydroxycarboxylic acid having 2 to 7 carbon atoms, such as a C1-4 alkyl 4-hydroxybutyrate.

Abstract: A primary electrochemical cell and electrolyte incorporating a linear asymmetric ether is disclosed. The ether may include EME, used in combination with DIOX and DME, or have the general structural formula R1—O—CH2—CH2—O—R2 or R1—O—CH2—CH(CH3)—O—R2, where a total of at least 7 carbon atoms must be present in the compound, and R1 and R2 consist alkyl, cyclic, aromatic or halogenated groups but cannot be the same group (i.e., R1?R2).

Abstract: The present invention provides an electrolyte for lithium and lithium-ion batteries comprising a lithium salt such as LiF2BC2O4, LiPF6, LiBF4, and/or LiB(C2O4)2. In a liquid carrier comprising glycerol carbonate. Preferably, the electrolyte comprises a combination of glycerol carbonate with one or more other carbonate solvent (e.g., dimethylcarbonate, ethylene carbonate, and the like).

Abstract: A primary electrochemical cell and electrolyte incorporating a linear asymmetric ether is disclosed. The ether may include EME, used in combination with DIOX and DME, or have the general structural formula R1—O—CH2—CH2—O—R2 or R1—O—CH2—CH(CH3)—O—R2, where a total of at least 7 carbon atoms must be present in the compound, and R1 and R2 consist alkyl, cyclic, aromatic or halogenated groups but cannot be the same group (i.e., R1?R2).

Abstract: A nonaqueous electrolyte for a lithium secondary battery and a lithium secondary battery including the same are provided. In particular, the nonaqueous electrolyte comprises a compound of chemical formula 1 as an electrolyte additive: NC—(R1)n-A-(R2)m—CN??1 wherein, R1 and R2 represent, respectively, alkylene groups, n and m represent integers of 1 to 10, and A is an aromatic hydrocarbon in which the number of carbons is 5 to 9 or O. When the lithium secondary battery is kept at high voltage and temperature, the electrolyte additive reduces gas generation, thereby reducing battery swelling. Therefore, it is possible to reduce a battery thickness increment rate and to increase discharge capacity at a high temperature.

Abstract: A non-aqueous electrolyte for a lithium battery includes a non-aqueous organic solvent, the organic solvent including one or more of a carbonate-based solvent, an ester-based solvent, an ether-based solvent, and/or a ketone-based solvent, a lithium salt, and a hexafluoroacetylacetone in an amount of about 0.02 parts by weight to about 10 parts by weight, based on 100 parts by weight of the non-aqueous organic solvent.

Abstract: A lithium electrochemical cell design incorporating a low molality electrolyte including LiI is disclosed. The resulting cell delivers excellent performance under a wide range of temperatures, conditions and drain rates.