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 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).

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 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).

Abstract: A secondary battery includes: a cathode; an anode; and an electrolytic solution. The cathode includes a lithium-containing compound having an average composition represented by a following Formula (1), the lithium-containing compound includes a central section and a surface section, a molar ratio b1 of manganese (Mn) in the surface section is larger than a molar ratio b2 of Mn in the central section, a molar ratio 1+a1 of lithium (Li) in the surface section is smaller than a molar ratio 1+a2 of Li in the central section, and a ratio 1+a1/1+a2 between the molar ratio 1+a1 of Li in the surface section and the molar ratio 1+a2 of Li in the central section satisfies 0.5<1+a1/1+a2<1, Li1+a(MnbCocNi1-b-c)1?aMdO2-e??(1) where M is one or more of aluminum, magnesium, zirconium, titanium, barium, boron, silicon, and iron; and a to e satisfy 0<a<0.25, 0.5?b<0.7, 0?c<1?b, 0?d?1, and 0?e?1.

Abstract: A lithium ion secondary battery includes: a positive electrode; a negative electrode; and an electrolytic solution, at least one of the positive electrode and the negative electrode being capable of storing and releasing lithium ions, and containing an active material that satisfies predetermined conditions.

Abstract: Disclosed herein is a positive electrode active material prepared by mixing a lithium-containing compound, a compound containing a transition metal to be put into a solid solution, and a compound containing a metallic element M2 different from the transition metal, and firing the mixture to form composite oxide particles, depositing a compound containing at least one element selected from among sulfur (S), phosphorus (P) and fluorine (F) on surfaces of the particles, and firing the particles, whereby each of the particles is provided with a concentration gradient such that the concentration of the metallic element M2 increases from the center toward the surface of the particle, and at least one element selected from among (S), (P) and (F) is made present in the form of being aggregated at the surfaces of the composite oxide particles.

Abstract: Disclosed herein is a positive electrode active material prepared by mixing a lithium-containing compound, a compound containing a transition metal to be put into a solid solution, and a compound containing a metallic element M2 different from the transition metal, and firing the mixture to form composite oxide particles, depositing a compound containing at least one element selected from among sulfur (S), phosphorus (P) and fluorine (F) on surfaces of the particles, and firing the particles, whereby each of the particles is provided with a concentration gradient such that the concentration of the metallic element M2 increases from the center toward the surface of the particle, and at least one element selected from among (S), (P) and (F) is made present in the form of being aggregated at the surfaces of the composite oxide particles.

Abstract: A cathode active material is a lithium-rich lithium-containing compound having a bedded salt-type crystal structure. A product SD of a specific surface area S in square meters per gram and a crystallite diameter D in micrometer is equal to or more than about 1.4×10?6 cubic meters per gram.

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 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 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).

Abstract: A secondary battery includes: a cathode; an anode; and an electrolytic solution. The cathode includes two or more kinds of lithium transition metal complex phosphate particles including lithium and one or two or more transition metals as constituent elements, and the composition of the one or two or more transition metals differs between the two or more kinds of lithium transition metal complex phosphate particles.

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).

Abstract: A cathode includes a lithium transition metal complex compound including lithium, one, or two or more transition metals, magnesium, and oxygen as constituent elements. In a standardized X-ray absorption spectrum of the lithium transition metal complex compound measured by an X-ray absorption spectroscopic method, a first absorption edge having absorption edge energy E1 in X-ray absorption intensity of about 0.5 exits in a range where X-ray energy is from about 1303 eV to about 1313 eV both inclusive, in a discharged state in which a discharge voltage is about 3.0 V, and a second absorption edge having absorption edge energy E2 in X-ray absorption intensity of about 0.5 exits, in a charged state in which a charge voltage V is from about 4.3 V to about 4.5 V both inclusive. The absorption edge energies E1 and E2 and the charge voltage V satisfy a relation of E2?E1?(V?4.25)×4.

Abstract: A lithium ion secondary battery capable of improving the lithium ion input-output characteristics. An active material capable of storing and releasing lithium ions is a Li complex oxide or a Li complex oxoacid salt. A plurality of primary particles have a particle size distribution with 1 nm<D10<65 nm, 5 nm<D50<75 nm, and 50 nm<D90<100 nm. The maximum peak pore size A in a pore size distribution as measured by a mercury intrusion technique is 10 nm?A?75 nm. The ratio B/A of the maximum peak pore size A and the crystallite size B is 0.5?B/A?1.

Abstract: A battery is composed of a positive electrode in which a positive electrode active material layer including a positive electrode active material is formed on a positive electrode collector, a negative electrode in which a negative electrode active material layer including a negative electrode active material is formed on a negative electrode collector, a separator provided between the positive electrode and the negative electrode, and an electrolyte impregnated in the separator. The battery further includes at least one of a heteropoly acid and a heteropoly acid compound as an additive at least in one of the positive electrode, the negative electrode, the separator, and the electrolyte.

Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode contains a lithium composite oxide. The negative electrode contains a material including at least one of silicon Si and tin Sn as a constituent element. The lithium composite oxide includes lithium Li having a composition ratio a, a first element having a composition ratio b, and a second element having a composition ratio c as a constituent element. The first element including two kinds or more selected from among manganese Mn, nickel Ni, and cobalt Co, and including at least manganese. The second element including at least one kind selected from among aluminum Al, titanium Ti, magnesium Mg, and boron B. The composition ratios a to c satisfy the relationships of 1.1<a<1.3, 0.7<b+c<1.1, 0<c<0.1, and a>b+c.

Abstract: A positive active material including a compound expressed by a general formula LimMxM?yM?zO2 (here, M designates at least one kind of element selected from Co, Ni and Mn, M? designates at least one kind of element selected from Al, Cr, V, Fe, Cu, Zn, Sn, Ti, Mg, Sr, B, Ga, In, Si and Ge, and M? designates at least one kind of element selected from Mg, Ca, B and Ga. Further, x is designated by an expression of 0.9?x<1, y is indicated by an expression of 0.001?y?0.5, z is indicated by an expression of 0?z?0.5, and m is indicated by an expression of 0.5?m) and lithium manganese oxide expressed by a general formula LisMn2-tMatO4 (here, the value of s is expressed by 0.9?s, the value of t is located within a range expressed by 0.01?t?0.5, and Ma indicates one or a plurality of elements between Fe, Co, Ni, Cu, Zn, Al, Sn, Cr, V, Ti, Mg, Ca, Sr, B, Ga, In, Si and Ge) are included, so that both a large capacity and the suppression of the rise of temperature of a battery upon overcharging operation are achieved.

Abstract: A battery capable of improving the energy density and improving the cycle characteristics is provided. The battery includes a cathode, an anode arranged opposite of the cathode and an electrolyte in between the cathode and the anode. The amount of cathode active material and the amount of anode active material is such that the open circuit battery voltage is within the range from 4.25 volts to 6.00 volts, the electrolyte contains an electrolytic solution and a polymer containing vinylidene fluoride, and the cathode contains lithium complex oxides.

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode contains a positive electrode active material including element M2 incorporated in a crystal structure in a surface layer area of a complex oxide, the oxide including the element M1 and being represented by the following formula (1), M2 being different from M1. The element M2 is at least one kind selected from the group consisting of magnesium Mg, calcium Ca, titanium Ti, zirconium Zr, sulfur S, fluorine F, iron Fe, copper Cu, boron B, aluminum Al, phosphorus P, carbon C, manganese Mn, nickel Ni, and cobalt Co. Li1+a(MnbCocNi1?b?c)1?aM1dO2?e??(1) M1 is at least one kind of aluminum, magnesium, zirconium, titanium, barium Ba, boron, silicon Si, and iron, a satisfies 0<a<0.25, b satisfies 0.5?b<0.7, c satisfies 0?c<1?b, d satisfies 0.01?d?0.2, and e satisfies 0?e?1.

Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution, wherein the positive electrode includes a first lithium composite oxide and a second lithium composite oxide expressed by the following equation (1), as a positive electrode active material, and a charge capacity (vs lithium metal) per unit volume during a charge and discharge of a first cycle is larger in the second lithium composite oxide compared to the first lithium composite oxide, and a discharge voltage (vs lithium metal) during the charge and discharge of the first cycle is lower in the second lithium composite oxide compared to the first lithium composite oxide, Li1+a(MnbCocNi1-b-c)1-aO2 . . . (1), where a, b, and c satisfy relationships of 0<a?0.25, 0.5?b<0.7, and 0?c<1?b.

Abstract: A positive active material is composed of particles of a compound oxide of lithium and a transition metal. This compound oxide has a layered structure. A coating layer of an inorganic compound and a carbonaceous material is formed on at least part of each surface of the particles. The inorganic compound is a lithium compound. The weight ratio of the inorganic compound to the carbonaceous material ranges between 99:1 and 60:40. The weight ratio of the particles to the coating layers ranges between 98:2 and 70:30.