Abstract: In a solid electrolyte to which an imide-based electrolyte salt is applied, corrosion of a current collector of Al is suppressed. A solid electrolyte containing an imide-based Li electrolyte salt, nanoparticles, glyme, and a first additive, wherein the first additive is represented by formula (1) wherein M is any element of nitrogen (N), boron (B), phosphorus (P) and sulfur (S), R is a hydrocarbon group, and An is BF4? or PF6?, or an all-solid battery containing the solid electrolyte, a positive electrode, and a negative electrode. Here, the solid electrolyte may contain a second additive.

Abstract: A negative electrode material, for lithium ion secondary batteries, that has a high Li ion conductivity and improves the lithium ion secondary batteries in cycle characteristic. The negative electrode material includes: a negative electrode active material including silicon and/or a silicon compound; and a polymer represented by a chemical formula (1): wherein: A is a functional group having an amide group (—CONH—) and a sulfo group (˜SO3X); X represents an alkali metal or hydrogen (H); B is a functional group having a polar functional group; R1 to R6 are each a hydrocarbon group having 1 to 10 carbon atoms or hydrogen (H); x and y are composition proportions, respectively, in the polymer that is a copolymer, and satisfies 0<x(x+y)?1.

Abstract: In the present invention, a compound represented by Formula (1) is used as an additive of electrolytic solution for a lithium secondary battery, (where, in Formula (1), R1 to R3 respectively denote any of hydrogen, an alkyl group and a functional group containing halogen; R4 to R8 respectively denote any of hydrogen, a hydrocarbon group, a functional group containing halogen and BF3X; X denotes alkali metal or alkali earth metal; and at least any of R4 to R8 is BF3X).

Abstract: Provided is a novel negative electrode material, for lithium ion secondary batteries, that has a high Li ion conductivity to make it possible to improve the lithium ion secondary batteries in cycle characteristic. The negative electrode material according to the present invention, for lithium ion secondary batteries, includes: a negative electrode active material including silicon and/or a silicon compound; and a polymer represented by a chemical formula (1): wherein: A is a functional group having an amide group (—CONH—) and a sulfo group (—SO3X wherein X represents an alkali metal or hydrogen (H)); B is a functional group having a polar functional group; R1 to R6 are each a hydrocarbon group having 1 to 10 carbon atoms or hydrogen (H); x and y are composition proportions, respectively, in the polymer that is a copolymer, and satisfy the following: 0<x(x+y)?1.

Abstract: In the present invention, a compound represented by Formula (1) is used as an additive of electrolytic solution for a lithium secondary battery, (where, in Formula (1), R1 to R3 respectively denote any of hydrogen, an alkyl group and a functional group containing halogen; R4 to R8 respectively denote any of hydrogen, a hydrocarbon group, a functional group containing halogen and BF3X; X denotes alkali metal or alkali earth metal; and at least any of R4 to R8 is BF3X).

Abstract: Provided is a negative electrode material for lithium ion batteries, which has a small irreversible capacity, low resistance and excellent output characteristics. In a negative electrode active material-coating material (Formula 1) for lithium ion secondary batteries, A represents a functional group having an amide group (—NHCO—) and a sulfo group (—SO3X, wherein X is an alkali metal or H), and B represents a functional group having a polar functional group. In the (Formula 1), R1 to R6 represent a hydrocarbon group having 1-10 carbon atoms, or H. In the (Formula 1), x and y represent the composition ratio of copolymerization, which is 0<x/(x+y)?1.

Abstract: An electrolyte includes a mixture of polymerizable compounds, or a polymer, in which the mixture includes a polymerizable compound having an aromatic functional group and a polymerizable functional group, and a polymerizable compound having a phosphorus-containing functional group that contains phosphorus, and having a polymerizable functional group, and in which the polymer has residues of each of the phosphorus-containing functional group, the aromatic functional group and the polymerizable functional group.

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: A lithium-ion secondary battery having a positive electrode capable of occluding and releasing lithium ions, a negative electrode capable of occluding and releasing lithium ions, a separator interposed between the positive electrode and the negative electrode, an electrolytic solution, and a current breaking mechanism that works in response to the rise of the battery's internal pressure, wherein the electrolytic solution is incorporated with an aromatic compound and the positive electrode is incorporated with a carbon dioxide gas generating agent which is represented by the formula AxCO3 or AyHCO3. It is highly responsive to overcharging owing to the current breaking mechanism attached thereto which activates in the early stage of overcharging. Therefore, it exhibits high battery performance as well as high safety in the case of overcharging.

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 lithium-ion secondary battery having a positive electrode capable of occluding and releasing lithium ions, a negative electrode capable of occluding and releasing lithium ions, a separator interposed between the positive electrode and the negative electrode, an electrolytic solution, and a current breaking mechanism that activates in response to the rise of the battery's internal pressure, wherein the electrolytic solution is incorporated with an aromatic compound and the separator is incorporated with a carbon dioxide gas generating agent which is represented by the formula AxCO3 or AyHCO3. It is highly responsive to overcharging owing to the current breaking mechanism attached thereto which activates in the early stage of overcharging. Therefore, it exhibits high battery performance as well as high safety in the case of overcharging.

Abstract: Provided is a lithium ion rechargeable battery less suffering from swelling even when stored at high temperatures. Disclosed are a cathode active material, a cathode for a lithium ion rechargeable battery using the cathode active material, and a lithium ion rechargeable battery using the cathode. The cathode active material includes particles, each of the particles including a cathode material capable of intercalating and deintercalating lithium ions, and a film formed on at least part of surfaces of the particles. The film includes a compound represented by Chemical Formula (1). Examples of the compound represented by Chemical Formula (1) include lithium squarate and dilithium squarate. Preferably, the lithium ion rechargeable battery is a prismatic battery.

Abstract: There is provided a lithium ion secondary battery which suppresses overcharge while keeping battery characteristics. The lithium ion secondary, batter, has positive and negative electrodes facing each other via a separator and being filled with an electrolytic solution with a supporting electrolyte dissolved in a non-aqueous solvent, wherein the electrolytic solution contains overcharge inhibitor.

Abstract: Provided is a lithium ion rechargeable battery less suffering from swelling even when stored at high temperatures. Disclosed are a cathode active material, a cathode for a lithium ion rechargeable battery using the cathode active material, and a lithium ion rechargeable battery using the cathode. The cathode active material includes particles, each of the particles including a cathode material capable of intercalating and deintercalating lithium ions, and a film formed on at least part of surfaces of the particles. The film includes a compound represented by Chemical Formula (1). Examples of the compound represented by Chemical Formula (1) include lithium squarate and dilithium squarate. Preferably, the lithium ion rechargeable battery is a prismatic battery.

Abstract: The gas generation and the decrease in battery capacity during high temperature storage of a lithium secondary battery are suppressed. The electrolyte contains a polymerizable compound or a polymer, the polymerizable compound contains a compound having an aromatic functional group and a polymerizable functional group and a compound having a complex-forming functional group forming a complex with a metal ion and a polymerizable functional group, and the polymer has the complex-forming functional group, the aromatic functional group and a residue of the polymerizable functional group.

Abstract: In a lithium secondary battery, an overcharge inhibitor is used which includes polymerizable compounds or a polymer, or both as an active component, the polymerizable compounds including a first polymerizable compound having an aromatic functional group and a polymerizable functional group, and a second polymerizable compound having a halogen-containing functional group and a polymerizable functional group, and the polymer including a polymer having the halogen-containing functional group, the aromatic functional group, and residues of the polymerizable functional groups. The present invention allows the lithium secondary battery to form a radical-trapping polymer layer on the cathode upon overcharge.

Abstract: An electrolyte includes a mixture of polymerizable compounds, or a polymer, in which the mixture includes a polymerizable compound having an aromatic functional group and a polymerizable functional group, and a polymerizable compound having a phosphorus-containing functional group that contains phosphorus, and having a polymerizable functional group, and in which the polymer has residues of each of the phosphorus-containing functional group, the aromatic functional group and the polymerizable functional group.

Abstract: In a lithium secondary battery which contains an electrode group including a positive electrode, a negative electrode and a separator interposed between the positive electrode and the negative electrode, and an electrolytic solution, a current shut-off portion which is activated by an increase in an internal pressure is provided, a polymerizable compound having an aromatic functional group and a polymerizable functional group, or a polymer having an aromatic functional group and a residue of a polymerizable functional group is contained, and a carbon dioxide generating agent which produces carbon dioxide by a neutralization reaction is contained in at least one of the positive electrode and the separator. Thereby, the current shut-off valve is activated in an early stage of overcharge to increase the safety of the battery when overcharged.

Abstract: To provide a functional material which forms a high-resistance layer to interrupt an electric current, thereby ensuring the safety of a battery during overcharge. A polymerizable compound including a polymerizable functional group having an aromatic functional group, a polymerizable compound including a polymerizable functional group having a highly polar functional group, and a polymerizable compound including a polymerizable functional group having a less polar functional group, or a polymer obtained by polymerizing these polymerizable compounds are added into an electrolytic solution of a lithium secondary battery.

Abstract: The preparation of a slurry so as to exhibit no strong alkalinity not only needs a strict pH control, but also needs once dispersing a positive electrode material in water and the operation of drying after the treatment, and other operations, thereby leading to the complication of the operations and a decrease in the yield. In consideration of the above-mentioned problems, the present invention provides a method for producing a positive electrode plate for a lithium ion rechargeable battery, which exhibits less complication of the operations and less decrease in the yield and can prevent the gelation of a positive electrode material slurry. The above-mentioned problems can be solved by a positive electrode for a lithium ion rechargeable battery containing a positive electrode active material capable of absorbing/desorbing lithium ions, a nitrile group-containing polymer, and a binder.