Abstract: A positive electrode active material includes: a secondary particle obtained upon aggregation of a primary particle that is a lithium complex oxide particle in which at least nickel (Ni) and cobalt (Co) are solid-solved as transition metals, wherein an average composition of the whole of the secondary particle is represented by the following formula (1): LixCoyNizM1-y-zOb-aXa ??Formula (1) wherein an existent amount of cobalt (Co) becomes large from a center of the primary particle toward the surface thereof; and an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the surface of the secondary particle is larger than an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the center of the secondary particle.

Abstract: A nonaqueous electrolyte battery is provided and includes a positive electrode having a positive electrode active material layer containing a positive electrode active material formed on at least one surface of a positive electrode collector, a negative electrode having a negative electrode active material layer containing a negative electrode active material formed on at least one surface of a negative electrode collector, a separator provided between the positive electrode and the negative electrode, and an electrolyte. A coating film in a gel form containing an amorphous polyacid and/or polyacid compound containing one or more kinds of a polyelement is formed on the surface of at least a part of the negative electrode. Also, at least one of the polyacid and the polyacid compound contains a polyatom ion with a valence of 6 and a polyatom ion with a valence of less than 6.

Abstract: A positive electrode for a nonaqueous electrolyte battery includes a collector, and a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material, and also includes a heteropoly acid and/or heteropoly acid compound and phosphorous acid as additives.

Abstract: A cathode active material capable of improving chemical stability, a method for producing the same, and a nonaqueous electrolyte secondary battery using the same which has high capacity and good charge-discharge cycling characteristics is provided. The cathode has a cathode active material. The cathode active material includes a coating layer formed on at least a part of the composite oxide particle, the coating layer including an oxide including lithium and an oxide including a coating element of nickel, or nickel and manganese, and a surface layer formed on at least a part of the coating layer and containing molybdenum.

Abstract: A secondary battery, a cathode, an anode, and an electrolyte are provided. For example, a secondary battery is provided including an anode; a cathode; and an electrolyte, wherein the anode includes an anode active material and a coat including a substance selected from the group consisting of metal barium and barium compounds.

Abstract: A positive electrode active material includes a lithium complex oxide particle, and a coating layer formed on at least a part of the surface of the lithium complex oxide particle. The lithium complex oxide particle is a lithium complex oxide particle composed mainly of nickel. The coating layer contains an oxo acid and/or an oxo acid compound, an acidity of the surface of the lithium complex oxide particle composed mainly of nickel is increased by the coating layer. The acidity is determined based on a pH of a supernatant of water in a state where after 1.0 part by weight of the lithium complex oxide particle composed mainly of nickel and having a coating layer formed thereon is dispersed in 50 parts by weight of water. The lithium complex oxide particle sediments, and the pH is less than 8.0.

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a nonaqueous electrolyte, and a separator. The positive electrode includes a lithium composite oxide having an average composition represented by the following formula (1) LixCoyNizM1-y-zOb-aXa??(1) The separator includes a base layer and a polymer resin layer provided on at least one primary surface of the base layer, and the polymer resin layer includes at least one of poly(vinylidene fluoride), poly(vinyl formal), poly(acrylic ester), and poly(methyl methacrylate). In the above formula (1), M indicates at least one element selected of boron, magnesium, aluminum, silicon, phosphorous, sulfur, titanium, chromium, manganese, iron, copper, zinc, gallium, germanium, yttrium, zirconium, molybdenum, silver, strontium, cesium, barium, tungsten, indium, tin, lead, and antimony. X represents a halogen element. X, y, z, a, and b respectively satisfy 0.8<x?1.2, 0?y?1.0, 0.5?z?1.0, 0?a?1.0, and 1.8?b?2.2.

Abstract: A cathode active material capable of obtaining a high capacity and capable of improving stability or low-temperature characteristics, a method of manufacturing the same, and a battery are provided. A cathode (21) includes a cathode active material including a lithium complex oxide including Li and at least one kind selected from the group consisting of Co, Ni and Mn, and P and at least one kind selected from the group consisting of Ni, Co, Mn, Fe, Al, Mg and Zn as coating elements on a surface of the lithium complex oxide. Preferably, the contents of the coating elements are higher on the surface of the cathode active material than those in the interior thereof, and decrease from the surface to the interior.

Abstract: A cathode active material capable of further improving chemical stability, a method of manufacturing the cathode active material, and a battery using the cathode active material are provided. The cathode includes a cathode active material in which a coating layer made of a compound including Li, at least one selected from Ni and Mg, and O is arranged on complex oxide particles represented by Li1+xCo1?yMyO2?z, where M is at least one kind selected from the group consisting of Mg, Al, B, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Mo, Sn, W, Zr, Y, Nb, Ca and Sr, and the values of x, y and z are within a range of ?0.10?x?0.10, 0?y<0.50 and ?0.10?z?0.20, respectively. A surface layer made of an oxide including at least one kind selected from the group consisting of Ti, Si, Mg and Zr is formed on the coating layer.

Abstract: A method of manufacturing a cathode active material is provided. The method includes the step of precipitating step for providing a solution of a deposition component onto composite oxide particles including lithium Li and nickel Ni, removing a solvent from the solution on the composite oxide particles within a short time period, and precipitating the deposition component on surfaces of the composite oxide particles; and heating step for heating under an oxidation atmosphere the composite oxide particles with the deposition component precipitated on the surfaces.

Abstract: A cathode active material for nonaqueous electrolyte secondary battery is provided. The cathode active material includes: composite oxide particles containing at least lithium and cobalt; a coating layer disposed on at least a part of the surface of said composite oxide particles and including an oxide containing lithium and at least one coating element selected from nickel and manganese; and a surface layer disposed on at least a part of said coating layer and including an oxide containing at least one element selected from among lanthanoids.

Abstract: A cathode active material has: a lithium composite oxide which contains the highest proportion of nickel among constituent metal elements except lithium; and a phosphorus compound which is contained near the surface of the lithium composite oxide, a cathode including the cathode active material, and a method for manufacturing the cathode.

Abstract: A cathode active material has: a composite oxide particle containing at least lithium Li and cobalt Co; and a coating layer provided in a part of the composite oxide particle and having an oxide containing Li and an element of one of nickel Ni, manganese Mn, and cobalt Co. A ratio [Ni(T)Co(S)/Ni(S)Co(T)] of an atomic ratio [Ni(T)/Co(T)] of Ni to Co as an average of the whole cathode active material to an atomic ratio [Ni(S)/Co(S)] of Ni to Co in the surface of the cathode active material is larger than a ratio [Mn(T)Co(S)/Mn(S)Co(T)] of an atomic ratio [Mn(T)/Co(T)] of Mn to Co as an average of the whole cathode active material to an atomic ratio [Mn(S)/Co(S)] of Mn to Co in the surface of the cathode active material.

Abstract: A cathode active material is provided. The cathode active material includes: a composite oxide particle including at least lithium and cobalt; a coating layer which is provided in at least a part of the composite oxide particle and includes an oxide including lithium and a coating element of at least one of nickel and manganese; and a surface layer which is provided in at least a part of the coating layer and includes at least one element selected from the group consisting of silicon, tin, phosphorus, magnesium, boron, zinc, tungsten, aluminum, titanium, and zirconium.

Abstract: A cathode active material capable of improving chemical stability, a method for producing the same, and a nonaqueous electrolyte secondary battery using the same which has high capacity and good charge-discharge cycling characteristics is provided. The cathode has a cathode active material. The cathode active material includes a coating layer formed on at least a part of the composite oxide particle, the coating layer including an oxide including lithium and an oxide including a coating element of nickel, or nickel and manganese, and a surface layer formed on at least a part of the coating layer and containing molybdenum.

Abstract: A cathode active material capable of further improving chemical stability, a method of manufacturing the cathode active material, and a battery using the cathode active material are provided. The cathode includes a cathode active material in which a coating layer made of a compound including Li, at least one selected from Ni and Mg, and O is arranged on complex oxide particles represented by Li1+xCo1?yMyO2?z, where M is at least one kind selected from the group consisting of Mg, Al, B, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Mo, Sn, W, Zr, Y, Nb, Ca and Sr, and the values of x, y and z are within a range of ?0.10?x?0.10, 0?y<0.50 and ?0.10?z?0.20, respectively. A surface layer made of an oxide including at least one kind selected from the group consisting of Ti, Si, Mg and Zr is formed on the coating layer.

Abstract: A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of a complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).