Abstract: A nonaqueous electrolytic solution which may suppress the overcharge of a battery and a nonaqueous electrolyte secondary battery using the solution are provided. The overcharge of the battery is suppressed by undergoing the electrolytic polymerization in the solution when the battery is overcharged, and simultaneously more effectively suppressed by increasing the internal resistance of the battery. The nonaqueous electrolytic solution comprises a polymer which undergoes the electrolytic polymerization in the range of 4.3V or more to 5.5V or less at the lithium metal standard voltage, having a repeating unit represented by the formula (1), an electrolytic salt and a nonaqueous solvent. [where, A is a functional group which undergoes the electrolytic polymerization in the range of 4.3V or more to 5.

Abstract: An overcharge inhibitor is provided which increases an internal resistance of a battery, being electropolymerized by reaction with a positive electrode at a high potential in overcharging. The overcharge inhibitor is produced by using a polymer containing a polymerizable monomer as a repeating unit. The polymerizable monomer has a functional group that is electropolymerized at a potential of 4.3 to 5.5 V based on a lithium metal reference.

Abstract: A polymerizable boric compound for electrochemical devices represented by the formula (1), wherein, B represents a boron atom, Z represents a polymerizable functional group, X represents a divalent C1-12 hydrocarbon group or in the absence of X, Z and B form a direct bond, AO represents a C2-4 oxyalkylene group, m and n are each the number of moles of the oxyalkylene group added and each independently stands for 2 or greater but less than 6, and R1 and R2 each represents a C1-12 hydrocarbon group.

Abstract: It is an object of the present invention to provide a lithium ion secondary battery which suppresses overcharge while keeping battery characteristics. The lithium ion secondary battery has positive and negative electrodes facing each other via a separator and being filled with an electrolytic solution with a supporting electrolyte dissolved in an non-aqueous solvent, wherein the electrolytic solution contains a compound represented by Formula (1) (wherein A is oxygen, nitrogen, sulfur, selenium, silicon or phosphorus; R1 and R2 are each hydrogen or an organic group; and X1 to X12 are each hydrogen, a hydrocarbon group or halogen).

Abstract: An overcharge suppressing agent adapted to react when the positive electrode potential becomes higher, to increase the internal resistance of a battery during overcharge in an lithium ion secondary battery in which a positive electrode capable of occluding and releasing lithium and a negative electrode capable of occluding and releasing lithium are formed by way of an electrolyte. The electrolyte contains a polymerizable compound represented by the chemical formula (1-1) or the chemical formula (1-2): Z1-A??Chemical formula (1-1) Z1-X-A??Chemical formula (1-2) in which Z1 is a polymerizable functional group, X is a hydrocarbon group or an oxyalkylene group having 1 or more and 20 or less carbon atoms, and A is an aromatic functional group.

Abstract: A polymerizable boric compound for electrochemical devices represented by the formula (1), wherein, B represents a boron atom, Z represents a polymerizable functional group, X represents a divalent C1-12 hydrocarbon group or in the absence of X, Z and B form a direct bond, AO represents a C2-4 oxyalkylene group, m and n are each the number of moles of the oxyalkylene group added and each independently stands for 2 or greater but less than 6, and R1 and R2 each represents a C1-12 hydrocarbon group.

Abstract: A polymerizable boric compound for electrochemical devices represented by the formula (1), wherein, B represents a boron atom, Z represents a polymerizable functional group, X represents a divalent C1-12 hydrocarbon group or in the absence of X, Z and B form a direct bond, AO represents a C2-4 oxyalkylene group, m and n are each the number of moles of the oxyalklylene group added and each independently stands for 2 or greater but less than 6, and R1 and R2 each represents a C1-12 hydrocarbon group.

Abstract: A polymerizable composition for electrochemical devices contains a polymerizable compound of Formula 1 and a polymerizable compound of Formula 2, wherein “x” is an integer of 4 to 6; “m” is an integer of 1 to 10; and R is a lower alkyl group. The composition is polymerized to provide a polymer, and the polymer is used in an electrolyte to provide a gel electrolyte. The gel electrolyte has a high degree of swelling with electrolytic solution and thereby shows a high ionic conductivity.

Abstract: The object of the present invention is to provide a lithium secondary battery of high output. According to the present invention, there is provided a lithium secondary battery having a positive electrode and a negative electrode which reversibly intercalate and deintercalate lithium and an electrolyte containing an ion conductive material and an electrolytic salt, where said electrolyte contains an electrolytic salt and a boron-containing compound represented by the following formula (1) or a polymer thereof, or a copolymer of the compounds of the following formulas (2) and (3).

Abstract: This invention provides a high-power secondary battery using a polymer electrolyte, a positive electrode, and a negative electrode. Such secondary battery comprises a positive electrode comprising a positive electrode active material that deintercalates and intercalates cations, a negative electrode comprising a negative electrode active material that intercalates and deintercalates cations deintercalated from the positive electrode, and an electrolytic layer comprising an ion conductive polymer that mediates between the positive electrode and the negative electrode and allows the cations to migrate, wherein the positive or negative electrode comprises an organic boron-containing compound as a binder component and the positive and/or negative electrode active material is treated with silane or aluminum.

Abstract: An object of the present invention is to provide a boron-containing compound capable of forming an ion-conductive polyelectrolyte having high ion-conductive properties, and a polymer of said compound.

Abstract: The present invention provides a high-power secondary battery using a gel electrolyte comprising a polymer matrix, which is obtained by polymerizing a polymerizable functional group-terminated borate represented by formula (1) or a mixture composed of a borate represented by formula (2) and a borate represented by formula (3), an electrolytic salt, and further a nonaqueous solvent: wherein Z1, Z2, and Z3 each independently represent a polymerizable functional group or a hydrocarbon group having 1 to 10 carbon atoms, provided that an average mole of the hydrocarbon group having 1 to 10 carbon atoms is 1.0 to 2.

Abstract: A polymerizable boric compound for electrochemical devices represented by the formula (1), wherein, B represents a boron atom, Z represents a polymerizable functional group, X represents a divalent C1-12 hydrocarbon group or in the absence of X, Z and B form a direct bond, AO represents a C2-4 oxyalkylene group, m and n are each the number of moles of the oxyalklylene group added and each independently stands for 2 or greater but less than 6, and R1 and R2 each represents a C1-12 hydrocarbon group.

Abstract: An object of the present invention is to provide a boron-containing compound capable of forming an ion-conductive polyelectrolyte having high ion-conductive properties, and a polymer of said compound.

Abstract: The object of the present invention is to provide a lithium secondary battery of high output. According to the present invention, there is provided a lithium secondary battery having a positive electrode and a negative electrode which reversibly intercalate and deintercalate lithium and an electrolyte containing an ion conductive material and an electrolytic salt, where said electrolyte contains an electrolytic salt and a boron-containing compound represented by the following formula (1) or a polymer thereof, or a copolymer of the compounds of the following formulas (2) and (3).

Abstract: The object of the present invention is to provide a lithium secondary battery of high output. According to the present invention, there is provided a lithium secondary battery having a positive electrode and a negative electrode which reversibly intercalate and deintercalate lithium and an electrolyte containing an ion conductive material and an electrolytic salt, where said electrolyte contains an electrolytic salt and a boron-containing compound represented by the following formula (1) or a polymer thereof, or a copolymer of the compounds of the following formulas (2) and (3).