Abstract: A secondary battery according to one aspect of the present disclosure includes a negative electrode which includes a negative electrode core and a negative electrode active material layer provided on at least one surface of the negative electrode core. In this secondary battery, the negative electrode active material layer includes a negative electrode active material which contains graphite having a crystalline size of 10 nm or more and an interlayer distance d002 of 0.3356 to 0.3360 nm and a rubber-based binding material having an average primary particle diameter of 120 to 250 nm, the negative electrode active material has a pore capacity of 0.5 ml/g or less at a pore diameter of 0.2 to 1 ?m measured by a mercury porosimeter, and the rate of the average primary particle diameter of the rubber-based binding material to the pore capacity of the negative electrode active material is 1.15 to 1.70 g/m2.

Abstract: In a non-aqueous electrolyte secondary battery, a negative electrode includes covered graphite particles in each of which a surface of a graphite particle is covered with amorphous carbon, styrene-butadiene rubber, and at least one of carboxymethyl cellulose and a salt of carboxymethyl cellulose. The amorphous carbon included in each of the covered graphite particles includes an amorphous carbon layer formed of a first amorphous carbon and amorphous carbon particles formed of a second amorphous carbon. The second amorphous carbon has a higher electrical conductivity than the first amorphous carbon, the amorphous carbon particles have a BET specific surface area of 37 to 47 m2/g, the styrene-butadiene rubber has an average primary particle size of 150 to 210 nm, and at least one of the carboxymethyl cellulose and the salt of carboxymethyl cellulose has a weight average molecular weight of 3.7×105 to 4.3×105.

Abstract: A secondary battery according to one aspect of the present disclosure includes a negative electrode which includes a negative electrode core and a negative electrode active material layer provided on at least one surface of the negative electrode core. In this secondary battery, the negative electrode active material layer includes a negative electrode active material which contains graphite having a crystalline size of 10 nm or more and an interlayer distance d002 of 0.3356 to 0.3360 nm and a rubber-based binding material having an average primary particle diameter of 120 to 250 nm, the negative electrode active material has a pore capacity of 0.5 ml/g or less at a pore diameter of 0.2 to 1 ?m measured by a mercury porosimeter, and the rate of the average primary particle diameter of the rubber-based binding material to the pore capacity of the negative electrode active material is 1.15 to 1.70 g/m2.

Abstract: In a non-aqueous electrolyte secondary battery including a positive electrode: a negative electrode; and a non-aqueous electrolyte, the negative electrode contains: coated graphite particles in each of which a first amorphous carbon and a second amorphous carbon having a higher electrical conductivity than that of the first amorphous carbon are fixed to a surface of a graphite particle; and a carboxymethyl cellulose having a weight average molecular weight of 3.7×105 to 4.3×105 or its salt. The non-aqueous electrolyte contains a difluorophosphate and a lithium salt which converts an oxalato complex to an anion.

Abstract: There is provided a nonaqueous electrolyte secondary battery in which lithium deposition on the surface of a negative electrode is suppressed. The nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode having a negative electrode active material mixture layer containing a negative electrode active material, and a nonaqueous electrolyte. The negative electrode active material contains coated graphite particles having surfaces coated with a coating layer which contains first amorphous carbon and second amorphous carbon. The negative electrode active material mixture layer contains the coated graphite particles and third amorphous carbon as a conductive agent. The nonaqueous electrolyte contains a difluorophosphate salt and a lithium salt having an oxalate complex as an anion.

Abstract: Provided is a lithium containing composite oxide powder suitable for the positive electrode active material of the non-aqueous electrolysis solution secondary battery such as the lithium ion secondary battery, and a manufacturing process for the same. A lithium containing composite oxide powder includes a single crystal particle containing a lithium containing composite oxide that is manufactured by a molten salt method and that includes at least lithium and another one or more metal elements and in which a crystal structure belongs to a lamellar rock salt structure, wherein an average primary particle diameter is greater than or equal to 200 nm and smaller than or equal to 30 ?m. The lithium containing composite oxide powder is grown by reacting the metal containing ingredient in the molten salt of the lithium hydroxide at a reaction temperature of higher than or equal to 650° C. and lower than or equal to 900° C.