Abstract: A battery capable of improving the storage characteristics and the cycle characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. A solvent of the electrolytic solution contains a given sulfone compound such as bis(trimethylsilyl)methanedisulfonate. Compared to a case that a solvent contains other sulfone compound such as bis(methyl)methanedisulfonate, the chemical stability of the electrolytic solution is improved, and the decomposition reaction of the electrolytic solution is prevented.

Abstract: A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The electrolytic solution contains an ionic compound such as (2,2-difluoromalonate oxalate) lithium borate and [bis(3,3,3-trifluoromethyl)glycolate oxalate]lithium borate as an electrolyte salt. In the ionic compound, an anion has an asymmetric structure, and a ligand having an oxygen chelate structure in the anion has a halogen as an element. In the battery, the chemical stability of the electrolytic solution is improved, compared to a battery in which the electrolytic solution contains bis(oxalate) lithium borate or the like as an electrolyte salt.

Abstract: A 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 anode contains a material that can insert and extract an electrode reactant and contains at least one of a metal element and a metalloid element as an element, and the electrolytic solution contains a solvent, an electrolyte salt, and a sulfone compound having a given structure.

Abstract: An electrolyte capable of improving battery characteristics even at high temperatures, a battery including the electrolyte, and a method for manufacturing an electrolyte are provided. The electrolyte contains at least one type of compound represented by the following formula: where R1, R2, R3, and R4 independently represent a hydrogen group, a fluorine group, a methyl group, an ethyl group, or a group in which a fluorine group has substituted for a part of the methyl group or the ethyl group; at least one of R1, R2, R3, and R4 is a group containing fluorine (F); and X, Y, and Z independently represents sulfur (S) or oxygen (O) except the case in which all of X, Y, and Z are oxygen (O), that is, X?Y=Z=O.

Abstract: An electrolyte is provided that includes at least one of a compound represented by Formula 1 (wherein, R 1, R2, R3, and R4 represent a hydrogen group, or a methyl group and an ethyl group; X, Y, and Z represent sulfur (S) or oxygen (O)) or Formula 2 (wherein, R1 and R2 represent a hydrogen group, a halogen group, or a methyl group and an ethyl group, or groups in which a part of hydrogen thereof is substituted by a halogen group; X, Y, and Z represent sulfur (S) or oxygen (O)) which can retain chemical stability at high temperatures. Use of the electrolyte of the present invention allows a battery to have excellent characteristics in a hot environment.

Abstract: A battery capable of improving at least one of high-temperature storage characteristics and high-temperature cycle characteristics is provided. A battery includes a cathode, an anode and an electrolytic solution, and a separator arranged between the cathode and the anode is impregnated with the electrolytic solution. The electrolytic solution includes an acyl halide such as succinyl chloride or succinyl fluoride as well as a solvent and an electrolyte salt.

Abstract: 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.

Abstract: A battery capable of improving cycle characteristics is provided. An electrolytic solution impregnated with a separator includes an ionic compound with an asymmetric structure such as fluorotrifluoromethyl[oxalage-O,O?] lithium borate as an electrolyte salt. Thereby, compared to the case where an ionic compound with a symmetric structure such as bis[oxalate-O,O?] lithium borate or difluoro[oxalate-O,O?]lithium borate is included as an electrolyte salt, the conductivity of the electrolytic solution is improved.

Abstract: A secondary battery having a cathode, an anode, and an electrolyte is provided. The cathode includes a cathode active material containing at least one kind selected from the group consisting of sulfur S and phosphorus P in a portion near the particle surface of a lithium composite oxide. A content of the kind in the portion is larger than that in the particle of the lithium composite oxide.

Abstract: An electrolyte and battery using same is provided. The electrolyte comprising at least one of a compound represented by Formula 1, wherein, R1, P2, R3, and R4 represent a hydrogen group, or a methyl group and an ethyl group; X, Y, and Z represent sulfur (S) or oxygen (O) or Formula 2, wherein, R1 and R2 represent a hydrogen group, a halogen group, or a methyl group and an ethyl group, or groups in which a part of hydrogen thereof is substituted by a halogen group; X, Y, and Z represent sulfur (S) or oxygen (O), which can retain chemical stability at high temperatures. Use of the electrolyte allows a battery to have excellent characteristics in a hot environment.

Abstract: An electrolytic solution and a battery capable of improving cycle characteristics are provided. A separator is impregnated with an electrolytic solution. The electrolytic solution includes a cyclic carbonate derivative having a halogen atom such as 4-fluoro-1,3-dioxolane-2-one or 4-chloro-1,3-dioxolane-2-one and a cyclic imide salt such as 1,1,2,2,3,3-hexafluoropropane-1,3-disulfonimide lithium. Thereby, the decomposition reaction of the electrolytic solution can be inhibited, and the cycle characteristics can be improved.

Abstract: A battery capable of improving high temperature characteristics is provided. An electrolytic solution is impregnated in a separator. The electrolytic solution contains an imide salt expressed by LiN(CnF2n+1SO2)(CmF2m+1SO2) (n and m are respectively an integer number from 1 to 4, and a different value from each other). Thereby, a coat stable even at high temperatures can be formed on the surface of a cathode or an anode, and chemical stability of the electrolytic solution at high temperatures can be improved. LiPF6 is preferably mixed in the electrolytic solution.

Abstract: A battery capable of improving cycle characteristics is provided. A spirally wound electrode body in which a cathode and an anode are wound with a separator in between is included. An electrolytic solution in which an electrolyte salt is dissolved in a solvent is impregnated in the separator. The electrolytic solution contains a cyclic ester carbonate derivative having halogen atom such as 4-fluoro-1,3-dioxolan-2-one and a light metal salt such as difluoro[oxolate-O,O?]lithium borate, tetrafluoro[oxolate-O,O?]lithium phosphate, and difluoro bis[oxolate-O,O?]lithium phosphate.

Abstract: A battery capable of improving cycle characteristics is provided. A spirally wound electrode body in which a cathode and an anode are layered with a separator in between and wound is included inside a battery can. An electrolytic solution is impregnated in the separator. For the solvent, a mixed solvent of a cyclic ester derivative having halogen atom and a chain compound having halogen atom is used. Thereby, decomposition reaction of the solvent in the anode is inhibited, and cycle characteristics are improved.