Abstract: One aspect of the invention provides a positive electrode material for a secondary battery including a positive electrode active material and a coating layer. The coating layer includes an ionic crystalline p-type semiconductor material and an ionic crystalline n-type semiconductor material which are both disposed on a surface of the positive electrode active material.

Abstract: A positive electrode composite material for a lithium ion secondary battery that makes it possible to appropriately reduce the electric resistance in a positive electrode and to realize a high-performance lithium ion secondary battery. The positive electrode composite material to be used in the positive electrode of the lithium ion secondary battery includes a particulate positive electrode active material composed of a lithium composite oxide having a layered crystal structure including at least lithium, and a conductive oxide. Here, a particulate region where primary particles of the conductive oxide are aggregated, and a film-shaped region where the conductive oxide is formed in a film shape adhere to at least a part of the surface of the positive electrode active material. The average particle diameter based on cross-sectional TEM observation of primary particles in the particulate region is equal to or greater than 0.

Abstract: A method of manufacturing a positive electrode material for lithium ion secondary battery includes the following (?) and (?): (?) a positive electrode active material is prepared; and (?) the positive electrode material for lithium ion secondary battery is manufactured by forming a coat on at least a portion of a surface of the positive electrode active material. The coat is formed to satisfy the following (1) to (3): (1) the coat includes a lithium ion conductor and a ferroelectric substance; (2) the ferroelectric substance is dispersed in the lithium ion conductor; and (3) the lithium ion conductor is interposed at least partially between the positive electrode active material and the ferroelectric substance.

Abstract: A positive electrode for a lithium ion secondary battery includes a positive electrode composite material layer. The positive electrode composite material layer includes composite particles and electron conductive particles. The composite particles include positive electrode active material particles and a coating film. The coating film is formed on the surface of the positive electrode active material particles. The coating film contains a first electron conductive oxide. The electron conductive particles are dispersed in the positive electrode composite material layer. The electron conductive particles contain a second electron conductive oxide. Each of the first electron conductive oxide and the second electron conductive oxide has a perovskite structure.

Abstract: A positive electrode active material includes secondary particles. The secondary particles include a plurality of primary particles. The primary particles include a lithium-containing composite metal oxide. Inside the secondary particles, an electron conducting oxide is disposed at at least a part of a grain boundary between the primary particles. The electron conducting oxide has a perovskite structure.

Abstract: One aspect of the present invention provides an electrode having a collector and an electrode mix layer disposed on the collector. The electrode mix layer contains an active material A having a core portion A and a coat material A, and an active material B having a core portion B and a coat material B. The isoelectric point of the coat material A is 7 or lower. The isoelectric point of the coat material B is 7 or higher. The isoelectric point of at least one of the coat material A and the coat material B is not 7.

Abstract: A non-aqueous electrolyte secondary battery disclosed herein includes a positive electrode containing a positive electrode active material, a negative electrode, and a non-aqueous electrolyte, and the positive electrode active material includes a positive electrode active material particle containing a lithium transition metal compound, and a coating portion coating at least a part of a surface of the positive electrode active material particle. The coating portion contains a lithium ionic conductor containing lithium, a phosphoric acid group, and at least one element of lanthanum (La) and cerium (Ce).

Abstract: A non aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material, a negative electrode, and a non aqueous electrolyte, and the positive electrode active material includes a positive electrode active material particle containing a lithium transition metal compound, and a coating portion coating at least a part of a surface of the positive electrode active material particle. The coating portion contains a lithium ionic conductor containing lithium, a phosphoric acid group, and yttrium. The lithium ionic conductor includes a region A in which a ratio of yttrium is relatively rich and a region B in which the ratio of yttrium is relatively poor.

Abstract: A positive electrode material for a lithium secondary battery of the present disclosure includes a positive electrode active material, a barium titanate-based dielectric, and at least one of Compound I which contains the element Ba and has the largest peak at a position with 2?=24° to 26° in an X-ray diffraction pattern obtained according to X-ray diffraction measurement using CuK? rays; and Compound II which contains the element Ti and has the largest peak at a position with 2?=26° to 28° in an X-ray diffraction pattern obtained according to X-ray diffraction measurement using CuK? rays. At least one of Compounds I and II is disposed in contact with the dielectric.

Abstract: A method of producing a wet mixture includes a stirring and mixing process in which lithium-containing positive electrode active material particles having surplus lithium compounds on the surface and crystalline ferroelectric ceramic particles are dried, stirred and mixed to obtain a mixed powder; and a solution mixing process in which a lithium conductor forming solution is mixed with the mixed powder to obtain a wet mixture containing coated lithium-containing positive electrode active material particles having a coating which is made of an amorphous lithium conductor and in which the ferroelectric ceramic particles are dispersed on the surface of the lithium-containing positive electrode active material particles.

Abstract: Provided is a positive electrode material that allows reducing the resistance of a lithium secondary battery. The positive electrode material for lithium secondary batteries disclosed herein contains positive electrode active material particles each having a layered structure; and at least one conductor selected from the group consisting of a lithium conductor and an electronic conductor, and disposed on a surface of the positive electrode active material particles. In a case where the positive electrode material contains the lithium conductor, the proportion of the lithium conductor disposed at planes other than the (003) plane of the positive electrode active material particle, with respect to the total amount of the lithium conductor, is not less than 50% and not more than 100%.

Abstract: Provided is a separator that is used in a nonaqueous electrolyte secondary battery, and that exhibits high impregnation ability with respect to a nonaqueous electrolyte solution. The separator for a nonaqueous electrolyte secondary battery disclosed herein is provided with: a porous substrate; a first coat layer formed on a pair of main surfaces and on an inner surface of the porous substrate; and a second coat layer formed on the first coat layer, at least on one main surface of the porous substrate. The first coat layer has higher hydrophilicity than the porous substrate. The second coat layer has higher hydrophobicity than the porous substrate. The hydrophilicity of an inner surface of the separator for a nonaqueous electrolyte secondary battery is higher than the hydrophilicity of the second coat layer, in a central region of the separator for a nonaqueous electrolyte secondary battery in the thickness direction thereof.

Abstract: The present invention provides an art that can improve further battery performance of lithium ion secondary batteries in which a lithium salt is added to the interior of the batteries. A herein disclosed lithium ion secondary battery electrode is constituted by disposing, on a surface of a foil-like electrode current collector, an electrode mixture layer that contains a particulate electrode active material. With this electrode, a lithium salt having a lithium ion intake capability is added to the electrode mixture layer; dividing the electrode mixture layer into three equal regions, which are a first region, a second region, and a third region, in a thickness direction, an amount of the lithium salt component in the first region and an amount of the lithium salt component in the third region satisfy the relationship 0<S3/S1?4; and a maximum particle diameter of aggregates of the lithium salt present in the electrode mixture layer is less than 1 ?m.

Abstract: According to an aspect of the present invention, there is provided a positive electrode material which contains a positive electrode active material, and a dielectric material having a perovskite crystal structure. In the positive electrode material, in an X-ray diffraction pattern (vertical axis: diffraction intensity, horizontal axis: diffraction angle 2? (rad)) obtained by X-ray diffraction measurement using a CuK? ray, a highest intensity peak which is a peak derived from the dielectric material and has the highest intensity is in a range satisfying 2?=31° to 32°, and a half width x of the highest intensity peak satisfies the following expression: 0.22?x?0.33.

Abstract: The positive electrode active material disclosed herein includes a base portion including a lithium transition metal complex oxide having a layered crystal structure, and a coating portion including an electroconductive oxide having a layered crystal structure. A smaller angle ? formed by a stacking plane direction of the lithium transition metal complex oxide and a stacking plane direction of the electroconductive oxide satisfies the following conditions: an average angle ?ave. obtained by arithmetically averaging the angle ? satisfies 0°??ave.?60°; and a ratio of points in which the angle ? is greater than 60° is 39% or less.

Abstract: A positive electrode composite material for a lithium ion secondary battery that makes it possible to appropriately reduce the electric resistance in a positive electrode and to realize a high-performance lithium ion secondary battery. The positive electrode composite material to be used in the positive electrode of the lithium ion secondary battery includes a particulate positive electrode active material composed of a lithium composite oxide having a layered crystal structure including at least lithium, and a conductive oxide. Here, a particulate region where primary particles of the conductive oxide are aggregated, and a film-shaped region where the conductive oxide is formed in a film shape adhere to at least a part of the surface of the positive electrode active material. The average particle diameter based on cross-sectional TEM observation of primary particles in the particulate region is equal to or greater than 0.

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery that can improve the output characteristics without deteriorating its battery capacity and cycling characteristics. The positive electrode active material comprises a lithium transition metal-containing composite oxide comprising secondary particles that are constructed by an aggregation of a plurality of primary particles. The secondary particles comprise an outer shell section where the primary particles are aggregated, a center section constructed by an inner space existing inside the outer shell section, and at least one through-hole formed in the outer shell section and communicating the center section and outside, and the ratio of the inner diameter of the through-hole with respect to the thickness of the outer shell section is 0.3 or more.

Abstract: Provided is a positive electrode material that allows reducing battery resistance. The positive electrode material disclosed herein has particles of a positive electrode active material, each having a void communicating between the surface and at least the interior; and an electronic conductor present on the surface of the particles of the positive electrode active material. The positive electrode active material has a layered rock salt structure, and has a composition represented by Formula (I) below. The electronic conductor has a composition represented by Formula (II) below, Li1+uNixMnyCozMtO2??(I) La1?pMapCo1?qMbqO3????(II) wherein the symbols in the formulas are as defined in the specification.

Abstract: One aspect of the present invention provides an electrode having a collector and an electrode mix layer disposed on the collector. The electrode mix layer contains an active material A having a core portion A and a coat material A, and an active material B having a core portion B and a coat material B. The isoelectric point of the coat material A is 7 or lower. The isoelectric point of the coat material B is 7 or higher. The isoelectric point of at least one of the coat material A and the coat material B is not 7.

Abstract: One aspect of the invention provides a positive electrode material for a secondary battery including a positive electrode active material and a coating layer. The coating layer includes an ionic crystalline p-type semiconductor material and an ionic crystalline n-type semiconductor material which are both disposed on a surface of the positive electrode active material.