Abstract: The non-aqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The negative electrode includes a molded body including Si-containing negative electrode active material particles and a conductive agent. The conductive agent includes a first conductive agent and a fibrous second conductive agent. The first conductive agent covers at least a portion of the surface of the Si-containing negative electrode active material particles, and the second conductive agent is in contact with at least two Si-containing negative electrode active material particles with the first conductive agent on the surface thereof.

Abstract: A non-aqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode includes a molded body made by compression molding a granulated material containing a negative electrode active material, a conductive agent, and a binder. The negative electrode active material includes a Si-containing material. Volume-based 90% particle size R (D90) of the negative electrode active material, volume-based 10% particle size Rz (D10) and 90% particle size Rz (D90) of the granulated material, and thickness T of the molded body satisfy the following relation formulae: (i) R (D90)<Rz (D10), (ii) Rz (D90)<T, (iii) 34 ?m?Rz (D10)?126 ?m, and (iv) 128 ?m?Rz (D90)?285 ?m, and the electric conductivity of the granulated material is 0.05 S/cm or more when the density of the granulated material is 0.9 g/cm3.

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material that comprises a lithium-containing manganese oxide, and the negative electrode includes a negative electrode active material that comprises silicon and a transition metal element. When the battery voltage is 0 V, the positive electrode and the negative electrode have a potential of 1.8 V or higher relative to lithium metal (Li/Li+). Since the deterioration of the positive and negative electrode active materials is suppressed, this non-aqueous electrolyte secondary battery has both high capacity and excellent deep discharge cycle life.

Abstract: An object of the present invention resides in that under the use of an active material capable of attaining a high capacity, the volume expansion of the negative electrode is alleviated, the maintenance of the structure of the negative electrode is achieved, and the degradation of the battery capacity is suppressed. The present invention relates to a negative electrode for a coin-shaped lithium secondary battery, a coin-shaped lithium secondary battery including the negative electrode, and a method for producing the negative electrode for a coin-shaped lithium secondary battery, wherein: the negative electrode includes a molded negative electrode including a negative electrode active material capable of absorbing and desorbing lithium; the molded negative electrode is of a coin shape having two flat faces and a side edge, and has cracks along the thickness direction thereof; at least one of the two flat faces has recessed portions; and the cracks start from the recessed portions.

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery including a manganese oxide having a spinel structure, wherein the manganese oxide is represented by the general formula: Li1+aMn2?x?aMxO4+y, where M is a transition metal element having an oxidation number of 2 or greater, M?Mn, 0.17?x?0.5, ?0.2?y?0.5 and 0?a?0.2.

Abstract: An organic electrolyte battery of this invention includes: a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; an organic electrolyte comprising at least an organic solvent and a solute dissolved in the organic solvent; and an additive that suppresses an increase in internal resistance. The additive includes at least one of phthalazone and a phthalazone derivative. The addition of the additive to the battery suppresses an increase in internal resistance upon storage and upon charge/discharge cycling, thereby making it possible to improve the storage characteristics and charge/discharge cycle characteristic of the battery.

Abstract: A non-aqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode includes a molded body made by compression molding a granulated material containing a negative electrode active material, a conductive agent, and a binder. The negative electrode active material includes a Si-containing material. Volume-based 90% particle size R (D90) of the negative electrode active material, volume-based 10% particle size Rz (D10) and 90% particle size Rz (D90) of the granulated material, and thickness T of the molded body satisfy the following relation formulae: (i) R (D90)<Rz (D10), (ii) Rz (D90)<T, (iii) 34 ?m?Rz (D10)?126 ?m, and (iv) 128 ?m?Rz (D90)?285 ?m, and the electric conductivity of the granulated material is 0.05 S/cm or more when the density of the granulated material is 0.9 g/cm3.

Abstract: A non-aqueous electrolyte secondary battery of the present invention includes a pelletized negative electrode. An active material for the negative electrode includes a first phase mainly composed of Si and a second phase containing a silicide of a transition metal. At least one of the first and second phases is amorphous or low-crystalline. The mean particle size (D50) is 0.50 to 20 ?m, and the 10% diameter (D10) and 90% diameter (D90) in a volume cumulative particle size distribution are respectively 0.10 to 5.0 ?m and 5.0 to 80 ?m. The battery is improved in density and current collecting properties of the negative electrode, has a high capacity, and has an excellent cycle life.

Abstract: The negative electrode for a non-aqueous electrolyte secondary battery of the present invention includes a conductive porous substrate, and a conductive material and an active material filled in pores of the porous substrate. The active material contains at least one of a metal element and a semi-metal element capable of reversibly absorbing and desorbing lithium.

Abstract: The non-aqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The negative electrode includes a molded body including Si-containing negative electrode active material particles and a conductive agent. The conductive agent includes a first conductive agent and a fibrous second conductive agent. The first conductive agent covers at least a portion of the surface of the Si-containing negative electrode active material particles, and the second conductive agent is in contact with at least two Si-containing negative electrode active material particles with the first conductive agent on the surface thereof.

Abstract: In a non-aqueous electrolyte secondary battery having a negative electrode containing Si as a negative electrode active material, a binder containing a non-crosslinked polyacrylic acid having a weight-average molecular weight of 300,000 to 3,000,000 is incorporated into a negative electrode molded article that constitutes the negative electrode, so as to prevent electrode decay resulting from expansion and contraction during charge/discharge, as well as to achieve high energy density and improved charge/discharge cycle characteristics.

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery including a manganese oxide having a spinel structure, wherein the manganese oxide is represented by the general formula: Li1+aMn2?x?aMxO4+y, where M is a transition metal element having an oxidation number of 2 or greater, M?Mn, 0.17?x?0.5, ?0.2?y??0.5 and 0?a?0.2.

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material that comprises a lithium-containing manganese oxide, and the negative electrode includes a negative electrode active material that comprises silicon and a transition metal element. When the battery voltage is 0 V, the positive electrode and the negative electrode have a potential of 1.8 V or higher relative to lithium metal (Li/Li+). Since the deterioration of the positive and negative electrode active materials is suppressed, this non-aqueous electrolyte secondary battery has both high capacity and excellent deep discharge cycle life.

Abstract: In a non-aqueous electrolyte secondary battery having a negative electrode containing Si as a negative electrode active material, a binder containing a non-crosslinked polyacrylic acid having a weight-average molecular weight of 300,000 to 3,000,000 is incorporated into a negative electrode molded article that constitutes the negative electrode, so as to prevent electrode decay resulting from expansion and contraction during charge/discharge, as well as to achieve high energy density and improved charge/discharge cycle characteristics.

Abstract: An organic electrolyte battery of this invention includes: a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; an organic electrolyte comprising at least an organic solvent and a solute dissolved in the organic solvent; and an additive that suppresses an increase in internal resistance. The additive includes at least one of phthalazone and a phthalazone derivative. The addition of the additive to the battery suppresses an increase in internal resistance upon storage and upon charge/discharge cycling, thereby making it possible to improve the storage characteristics and charge/discharge cycle characteristic of the battery.