摘要:
There is provided a non-aqueous electrolytic solution comprising an electrolyte salt, a specific fluorine-containing solvent and a fluorine-containing cyclic carbonate represented by the formula (A1): wherein X1 to X4 are the same or different and each is —H, —F, —CF3, —CHF2, —CH2F, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3; at least one of X1 to X4 is —F, —CF3, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3, and the non-aqueous electrolytic solution has further excellent noncombustibility and is suitable for lithium secondary batteries.
摘要:
There is provided a non-aqueous electrolytic solution assuring good solubility of an electrolyte salt and having enough cell characteristics (charge and discharge cycle characteristic, discharge capacity, and the like), and the non-aqueous electrolytic solution comprises a solvent for dissolving an electrolyte salt comprising (A) at least one fluorine-containing solvent selected from the group consisting of fluorine-containing ethers and fluorine-containing carbonates, (B) a non-fluorine-containing cyclic carbonate and (C) a chain ester represented by the formula (C): R1COOR2, wherein R1 is an alkyl group having 2 to 4 carbon atoms; R2 is an alkyl group having 1 to 4 carbon atoms or a fluorine-containing alkyl group having 1 to 4 carbon atoms, and (II) an electrolyte salt.
摘要:
There are provided a solvent for dissolving an electrolyte salt of lithium secondary battery comprising at least one fluorine-containing solvent (I) selected from the group consisting of a fluorine-containing ether, a fluorine-containing ester and fluorine-containing chain carbonate, 1,2-dialkyl-1,2-difluoroethylene carbonate (II) and other carbonate (III), a non-aqueous electrolytic solution comprising the solvent and an electrolyte salt, and a lithium secondary battery using the non-aqueous electrolytic solution. The solvent for dissolving an electrolyte salt provides a lithium secondary battery being excellent particularly in discharge capacity, rate characteristic and cycle characteristic and has enhanced incombustibility (safety) and the non-aqueous electrolytic solution comprises the solvent and an electrolyte salt.
摘要:
There is provided an electrochemical device provided with an electrolytic solution comprising (I) a solvent for dissolving an electrolyte salt comprising (A) a fluorine-containing ether represented by the formula (1): Rf1—O—Rf2 wherein Rf1 and Rf2 are the same or different and each is a fluorine-containing alkyl group having 3 to 6 carbon atoms, (B) a cyclic carbonate, and (C) a chain carbonate being compatible with both of the fluorine-containing ether (A) and the cyclic carbonate (B), and (II) an electrolyte salt, in which the solvent (I) for dissolving an electrolyte salt comprises 30 to 60% by volume of the fluorine-containing ether (A), 3 to 40% by volume of the cyclic carbonate (B) and 10 to 67% by volume of the chain carbonate (C) based on the whole solvent (I), and when the electrochemical device is provided with such an electrolytic solution, no phase separation occurs even at low temperature, flame retardancy and heat resistance are excellent, solubility of an electrolyte salt is high, discharge capacity is large, and charge and discharge cycle characteristics are satisfactory.
摘要:
There is provided a solvent for non-aqueous electrolytic solution of lithium secondary battery comprising a non-fluorine-containing cyclic carbonate (I), a non-fluorine-containing chain carbonate (II) and 1,2-dialkyl-1,2-difluoroethylene carbonate (III), wherein assuming that the total amount of (I), (II) and (III) is 100% by volume, the non-fluorine-containing cyclic carbonate (I) is contained in an amount of 10 to 50% by volume, the non-fluorine-containing chain carbonate (II) is contained in an amount of 49.9 to 89.9% by volume and the 1,2-dialkyl-1,2-difluoroethylene carbonate (III) is contained in an amount of not less than 0.1% by volume and less than 30% by volume. Also, there are provided a non-aqueous electrolytic solution comprising the mentioned solvent and a lithium secondary battery using the non-aqueous electrolytic solution. The solvent for non-aqueous electrolytic solution of lithium secondary battery provides a lithium secondary battery having specifically excellent discharge capacity, rate characteristic, cycle characteristic and safety.
摘要:
There is provided a non-aqueous electrolytic solution assuring good solubility of an electrolyte salt and having enough cell characteristics (charge and discharge cycle characteristic, discharge capacity, and the like), and the non-aqueous electrolytic solution comprises a solvent for dissolving an electrolyte salt comprising (A) at least one fluorine-containing solvent selected from the group consisting of fluorine-containing ethers and fluorine-containing carbonates, (B) a non-fluorine-containing cyclic carbonate and (C) a chain ester represented by the formula (C): R1COOR2, wherein R1 is an alkyl group having 2 to 4 carbon atoms; R2 is an alkyl group having 1 to 4 carbon atoms or a fluorine-containing alkyl group having 1 to 4 carbon atoms, and (II) an electrolyte salt.
摘要:
A solvent for non-aqueous electrolytic solution of lithium secondary battery including a non-fluorine-containing cyclic carbonate (I), a non-fluorine-containing chain carbonate (II) and 1,2-dialkyl-1,2-difluoroethylene carbonate (III). When the total amount of (I), (II) and (III) is taken as 100% by volume, the non-fluorine-containing cyclic carbonate (I) is contained in an amount of 10 to 50% by volume, the non-fluorine-containing chain carbonate (II) is contained in an amount of 49.9 to 89.9% by volume and the 1,2-dialkyl-1,2-difluoroethylene carbonate (III) is contained in an amount of not less than 0.1% by volume and less than 30% by volume. A non-aqueous electrolytic solution including the above-mentioned solvent and a lithium secondary battery using the non-aqueous electrolytic solution are also disclosed.
摘要:
There is provided a non-aqueous electrolytic solution assuring good solubility of an electrolyte salt and having enough cell characteristics (charge and discharge cycle characteristic, discharge capacity, and the like), and the non-aqueous electrolytic solution comprises a solvent for dissolving an electrolyte salt comprising (A) at least one fluorine-containing solvent selected from the group consisting of fluorine-containing ethers and fluorine-containing carbonates, (B) a non-fluorine-containing cyclic carbonate and (C) a chain ester represented by the formula (C): R1COOR2, wherein R1 is an alkyl group having 2 to 4 carbon atoms; R2 is an alkyl group having 1 to 4 carbon atoms or a fluorine-containing alkyl group having 1 to 4 carbon atoms, and (II) an electrolyte salt.
摘要:
There is provided a non-aqueous electrolytic solution comprising an electrolyte salt, a specific fluorine-containing solvent and a fluorine-containing cyclic carbonate represented by the formula (A1): wherein X1 to X4 are the same or different and each is —H, —F, —CF3, —CHF2, —CH2F, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3; at least one of X1 to X4 is —F, —CF3, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3, and the non-aqueous electrolytic solution has further excellent noncombustibility and is suitable for lithium secondary batteries.
摘要:
There is provided an electrochemical device provided with an electrolytic solution comprising (I) a solvent for dissolving an electrolyte salt comprising (A) a fluorine-containing ether represented by the formula (1): Rf1—O—Rf2 wherein Rf1 and Rf2 are the same or different and each is a fluorine-containing alkyl group having 3 to 6 carbon atoms, (B) a cyclic carbonate, and (C) a chain carbonate being compatible with both of the fluorine-containing ether (A) and the cyclic carbonate (B), and (II) an electrolyte salt, in which the solvent (I) for dissolving an electrolyte salt comprises 30 to 60% by volume of the fluorine-containing ether (A), 3 to 40% by volume of the cyclic carbonate (B) and 10 to 67% by volume of the chain carbonate (C) based on the whole solvent (I), and when the electrochemical device is provided with such an electrolytic solution, no phase separation occurs even at low temperature, flame retardancy and heat resistance are excellent, solubility of an electrolyte salt is high, discharge capacity is large, and charge and discharge cycle characteristics are satisfactory.