Abstract: A nonaqueous electrolyte secondary battery comprising a negative electrode plate including a negative electrode collector and a negative electrode mix layer which is placed on the negative electrode collector and which contains a negative electrode active material, a binder A containing a rubber polymer compound as a binder, and a binder B containing a water-soluble polymer compound. The negative electrode mix layer has a cross section in a thickness direction thereof, the cross section being halved into a collector-side region and a surface-side region. The sum of the perimeters of the negative electrode active material per unit area in the cross section is more distributed in the collector-side region than in the surface-side region. The binder A is more distributed in the collector-side region than in the surface-side region.

Abstract: In a nonaqueous electrolyte secondary battery including a positive electrode containing a positive electrode active material, a negative electrode, and a nonaqueous electrolyte, the positive electrode active material contains a lithium transition metal oxide having a surface to which a rare earth compound is adhered, and the nonaqueous electrolyte contains a lithium salt in which an oxalate complex functions as an anion.

Abstract: Provided are an electrode for a non-aqueous electrolyte secondary battery capable of improving the dispersibility of a conducting agent in the electrode and forming a good conductive network, a method for producing the same, and a non-aqueous electrolyte secondary battery. An electrode for a non-aqueous electrolyte secondary battery includes an active material, a binder, carbon nanotubes, and a non-fibrous conductive carbon material, characterized in that the electrode includes a polyvinylpyrrolidone-based polymer in an amount in the range of 5 to 25 parts by mass relative to 100 parts by mass of the carbon nanotubes.

Abstract: It is an object to provide a nonaqueous electrolyte secondary battery whose battery characteristics can be considerably improved by considerably improving the dispersibility of a carbon conductive agent and forming a good conductive network, and a method for producing the nonaqueous electrolyte secondary battery. A polyvinylpyrrolidone polymer serving as a dispersant and a polyglycerin-condensed ricinoleic acid ester are mixed with N-methyl-2-pyrrolidone serving as a dispersion medium, and then acetylene black is added thereto to prepare a carbon slurry. Subsequently, a positive electrode active material and a binder are mixed with the carbon slurry to prepare a positive electrode active material slurry. A positive electrode 11 is produced using the positive electrode active material slurry, and then a nonaqueous electrolyte secondary battery is produced using the positive electrode 11.

Abstract: The electrode for the nonaqueous electrolyte secondary battery includes a current collector and an active material layer formed on the current collector. The active material layer contains active material particles each coated with a conductive carbon material layer, a surfactant as a dispersant, and conductive carbon material particles.