Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a heat-resistant layer disposed between the positive electrode and the negative electrode. The positive electrode of this secondary battery contains a positive electrode active substance having a hollow structure, which has a shell portion and a hollow portion formed inside the shell portion. In addition, the heat-resistant layer contains plate-shaped inorganic filler particles as the main component.

Abstract: An electrode body includes: a positive electrode that includes a positive electrode active material layer; a negative electrode that includes a negative electrode active material layer; and a separator that electrically separates the positive electrode and the negative electrode from each other, in which the positive electrode active material layer and the separator contain N-methylpyrrolidone (NMP). A N-methylpyrrolidone (NMP) content in the positive electrode active material layer is 54 ppm to 602 ppm with respect to a total solid content of the positive electrode active material layer, and a N-methylpyrrolidone content (NMP) in the separator is 10 ppm to 26 ppm with respect to the total solid content of the positive electrode active material layer.

Abstract: This invention provides a method for producing a non-aqueous electrolyte secondary battery. The method comprises constructing a battery cell that comprises a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material, and a non-aqueous electrolyte solution comprising a non-aqueous solvent and an oxalatoborate-based compound. The method further comprises charging the battery cell to form on the negative electrode a layer that is derived from the oxalatoborate-based compound and comprises boron and oxalate ions. The method further comprises carrying out a modification treatment to increase the ratio of number of moles mB of boron to number of moles mA of oxalate ions in the layer.

Abstract: Provided is a nonaqueous electrolyte secondary battery 10 which, in cases where separators 70 each having a heat-resistant layer 74 on only one face thereof are used, has an excellent thermal stability and thus a higher safety and reliability when the battery 10 reaches a high temperature. Such a nonaqueous electrolyte secondary battery 10 includes a positive electrode 30 in which a positive electrode active material layer 34 is provided on both faces of a positive electrode current collector 32, a negative electrode 50 in which a negative electrode active material layer 54 is provided on both faces of a negative electrode current collector 52, at least two separators 70 each having a heat-resistant layer 74 on one face of a base material 72, and an electrolyte. The nonaqueous electrolyte secondary battery has an electrode assembly 20 in which the positive electrode 30 and the negative electrode 50 are stacked on top of one another with the separators 70 interposed therebetween.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The positive electrode of this secondary battery contains a positive electrode active substance having a hollow structure, which has a shell portion and a hollow portion formed inside the shell portion. In addition, a heat-resistant barrier layer is disposed between the positive electrode and the separator.

Abstract: A lithium secondary battery exhibiting low temperature output characteristics is provided. The lithium secondary battery of the present invention includes a current collector 12, and an active material layer 14 which is supported on the current collector 12 and contains active material particles 30 and electrically conductive material 16. The active material particles 30 each have a shell composed of a lithium transition metal oxide, a hollow part formed in the shell, and a through hole penetrating the shell. The electrically conductive material 16 contained in the active material layer 14 are arranged both in the hollow part of the active material particles and between the active material particles 30.

Abstract: A method for manufacturing a secondary battery determines the amount of the non-aqueous electrolyte to be injected into the bound cell case on the basis of an amount of air space in a positive electrode active material layer, a swelling rate of the positive electrode active material layer, an amount of air space in a negative electrode active material layer, a swelling rate of the negative electrode active material layer, an amount of air space in a separator sheet, a total surface area of an opposing surface of the positive electrode active material layer and the negative electrode active material layer, and a reference electrolyte amount per unit surface area, which is determined in accordance with a binding rate.

Abstract: A lithium secondary battery includes an electrode body containing a positive electrode and a negative electrode, a non-aqueous electrolytic solution, and a battery case in which the electrode body and the non-aqueous electrolytic solution are housed, wherein the positive electrode includes a positive electrode active material particle of a hollow structure having a shell portion formed of a lamellar lithium transition metal oxide and a hollow portion formed therein, the long diameter of a primary particle of the lithium transition metal oxide based on SEM observation is 1 ?m or less, the thickness of the shell portion based on SEM observation is 2 ?m or less, the negative electrode is provided with a negative electrode active material particle formed of a carbon material, and a krypton adsorption amount of the negative electrode active material particle is 3.5 m2/g or greater but 4 m2/g or less.

Abstract: This invention provides a method for producing a non-aqueous electrolyte secondary battery. The method comprises constructing a battery cell that comprises a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material, and a non-aqueous electrolyte solution comprising a non-aqueous solvent and an oxalatoborate-based compound. The method further comprises charging the battery cell to form on the negative electrode a layer that is derived from the oxalatoborate-based compound and comprises boron and oxalate ions. The method further comprises carrying out a modification treatment to increase the ratio of number of moles mB of boron to number of moles mA of oxalate ions in the layer.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The positive electrode of this secondary battery contains a positive electrode active substance having a hollow structure, which has a shell portion and a hollow portion formed inside the shell portion. In addition, a heat-resistant barrier layer is disposed between the positive electrode and the separator.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a heat-resistant layer disposed between the positive electrode and the negative electrode. The positive electrode of this secondary battery contains a positive electrode active substance having a hollow structure, which has a shell portion and a hollow portion formed inside the shell portion. In addition, the heat-resistant layer contains plate-shaped inorganic filler particles as the main component.

Abstract: Provided is a nonaqueous electrolyte secondary battery 10 which, in cases where separators 70 each having a heat-resistant layer 74 on only one face thereof are used, has an excellent thermal stability and thus a higher safety and reliability when the battery 10 reaches a high temperature. Such a nonaqueous electrolyte secondary battery 10 includes a positive electrode 30 in which a positive electrode active material layer 34 is provided on both faces of a positive electrode current collector 32, a negative electrode 50 in which a negative electrode active material layer 54 is provided on both faces of a negative electrode current collector 52, at least two separators 70 each having a heat-resistant layer 74 on one face of a base material 72, and an electrolyte. The nonaqueous electrolyte secondary battery has an electrode assembly 20 in which the positive electrode 30 and the negative electrode 50 are stacked on top of one another with the separators 70 interposed therebetween.

Abstract: A main object of the present invention is to provide a method for producing a battery electrode that has excellent adhesion between a collector and an active material layer by suppressing a migration phenomenon. The method for producing a battery electrode of the present invention is a method for producing a battery electrode 30 that has a structure in which an active material layer 20 that includes an active material 22 is held on a collector 10. The method includes a step of applying, onto the collector 10, an active material layer forming paste that contains the active material 22 and polymer materials 24, 26 in a solvent; and a step of drying the applied paste coat material, to form thereby the active material layer 20 on the collector 10. Fibrillated polymer fibers 26 are used as at least one of the polymer materials 24, 26.

Abstract: A method for manufacturing a secondary battery determines the amount of the non-aqueous electrolyte to be injected into the bound cell case on the basis of an amount of air space in a positive electrode active material layer, a swelling rate of the positive electrode active material layer, an amount of air space in a negative electrode active material layer, a swelling rate of the negative electrode active material layer, an amount of air space in a separator sheet, a total surface area of an opposing surface of the positive electrode active material layer and the negative electrode active material layer, and a reference electrolyte amount per unit surface area, which is determined in accordance with a binding rate.

Abstract: A lithium secondary battery exhibiting low temperature output characteristics is provided. The lithium secondary battery of the present invention includes a current collector 12, and an active material layer 14 which is supported on the current collector 12 and contains active material particles 30 and electrically conductive material 16. The active material particles 30 each have a shell composed of a lithium transition metal oxide, a hollow part formed in the shell, and a through hole penetrating the shell. The electrically conductive material 16 contained in the active material layer 14 are arranged both in the hollow part of the active material particles and between the active material particles 30.

Abstract: A main object of the present invention is to provide a method for producing a battery electrode that has excellent adhesion between a collector and an active material layer by suppressing a migration phenomenon. The method for producing a battery electrode of the present invention is a method for producing a battery electrode 30 that has a structure in which an active material layer 20 that includes an active material 22 is held on a collector 10. The method includes a step of applying, onto the collector 10, an active material layer forming paste that contains the active material 22 and polymer materials 24, 26 in a solvent; and a step of drying the applied paste coat material, to form thereby the active material layer 20 on the collector 10. Fibrillated polymer fibers 26 are used as at least one of the polymer materials 24, 26.

Abstract: A lithium secondary battery according to the present invention comprises a cathode and an anode 20. The anode 20 is structured such that an anode active material layer 24 containing anode active materials 21a and 21b is retained on an anode collector 22. The anode active material layer 24 has a structure of at least two layers: a collector-side active material layer 24a provided on the anode collector 22; and a surface-side active material layer 24b provided on the collector-side active material layer 24a. An average specific surface area of the anode active material 21b contained in the surface-side active material layer 24b is greater than an average specific surface area of the anode active material 21a contained in the collector-side active material layer 24a, and an average specific surface area of the anode active materials contained in the entire anode active material layer 24 is 3.3 m2/g to 5.6 m2/g.

Abstract: Provided is a positive electrode plate, which is high in the peeling strength of an anode activating substance layer and which is suppressed in the increase of a battery resistance. Also provided are a battery using the positive electrode plate, a vehicle having the battery mounted thereon, a battery-mounting device, and a positive electrode plate manufacturing method capable of manufacturing the anode activating substance layer properly. The positive electrode plate includes a substrate having conductivity, and a positive electrode active material layer formed in the substrate and containing positive electrode active material particles, a conductive material and binders. These binders are made of either only polyethylene oxide, or only polyethylene oxide and carboxymethyl cellulose.