Abstract: There is provided a method for producing an active material for a nonaqueous secondary battery, including firing an adherend in which a compound containing an element A (at least one element selected from among B, Al, Ga, In, Si, Ge, Sn, Mg and transition metal elements) is adhered to a particle surface of a material capable of being doped and dedoped with lithium ions, in a water-containing atmosphere so that weight increasing rate of the adherend is in a range of 0.1% by weight or more and 5.0% by weight or less, and firing the adherend.

Abstract: The invention is to provide an aluminum titanate-based ceramics showing a good mechanical strength. The invention is an aluminum titanate-based ceramics obtained by firing a starting material mixture which contains a titanium element and an aluminum element, and further contains a chromium element and/or a tungsten element. Preferably, a content of a chromium source which contains the chromium element is from 0.001 to 5 parts by mass, and a content of a tungsten source which contains the tungsten element is from 0.001 to 1.0 part by mass relative to 100 parts by mass of the starting material mixture.

Abstract: The invention is to provide a process for producing an aluminum titanate-based ceramics body, wherein, as a regenerated starting material, a fired body recovered in a production process for an aluminum titanate-based ceramics body is used and the aluminum titanate-based ceramics body excellent in a mechanical strength and in a thermal characteristics such as low thermal expansion and heat resistance can be obtained. The invention provides a process for producing an aluminum titanate-based ceramics body using a fired ceramics body recovered in a production process for an aluminum titanate-based ceramics body, comprising the following steps: a step of preparing a pulverized product having a median particle diameter of 100 ?m or less from the fired ceramics body; a step of preparing a regenerated clay containing the pulverized product and water; a step of shaping the regenerated clay to form a shaped body; and a step of firing the shaped body.

Abstract: The present invention is a glass frit comprising 60 to 80% by weight of SiO2, 9 to 20% by weight of Al2O3, 3 to 12% by weight of K2O, and 3 to 12% by weight of Na2O, expressed on oxide basis.

Abstract: A process for producing an aluminum titanate-based fired body, comprising a step of firing a shaped body of a starting material mixture containing an aluminum source powder, a titanium source powder and a magnesium source powder, wherein the BET specific surface area of the magnesium source powder is not less than 2.0 m2/g and not more than 30.0 m2/g.

Abstract: The invention is to provide a process for producing an aluminum titanate-based ceramics body, wherein a regenerated unfired starting material recovered in a production process for an aluminum titanate-based ceramics body is used and a regenerated clay is easy to prepare and an aluminum titanate-based ceramics body excellent in a mechanical strength and in a thermal characteristics such as low thermal expansion and heat resistance can be obtained. The invention is a process for producing an aluminum titanate-based ceramics body using an unfired regenerated starting material recovered in a production process for an aluminum titanate-based ceramics body, comprising the following steps: a step of preparing a pulverized material having a diameter of 1 mm or less from the unfired regenerated starting material; a step of preparing a regenerated clay containing the pulverized material and water; a step of shaping the regenerated clay to form a shaped body; and a step of firing the shaped body.

Abstract: The invention is to provide an aluminum titanate-based ceramics showing a good mechanical strength. The invention is an aluminum titanate-based ceramics obtained by firing a starting material mixture which contains a titanium element and an aluminum element, and further contains a chromium element and/or a tungsten element. Preferably, a content of a chromium source which contains the chromium element is from 0.001 to 5 parts by mass, and a content of a tungsten source which contains the tungsten element is from 0.001 to 1.0 part by mass relative to 100 parts by mass of the starting material mixture.

Abstract: The invention is to provide a process for producing an aluminum titanate-based ceramics body, wherein, as a regenerated starting material, a fired body recovered in a production process for an aluminum titanate-based ceramics body is used and the aluminum titanate-based ceramics body excellent in a mechanical strength and in a thermal characteristics such as low thermal expansion and heat resistance can be obtained. The invention provides a process for producing an aluminum titanate-based ceramics body using a fired ceramics body recovered in a production process for an aluminum titanate-based ceramics body, comprising the following steps: a step of preparing a pulverized product having a median particle diameter of 100 ?m or less from the fired ceramics body; a step of preparing a regenerated clay containing the pulverized product and water; a step of shaping the regenerated clay to form a shaped body; and a step of firing the shaped body.

Abstract: A nonaqueous electrolyte secondary battery comprising a positive electrode containing a granular positive electrode active material composed of a mixed metal oxide and an M3-containing compound (M3 represents one or more elements selected from the group consisting of Group 3B elements in the periodic table, and the M3-containing compound is different from said mixed metal oxide) placed in the form of particles or a layer on the surface of the mixed metal oxide, wherein the positive electrode active material has M1 (M1 represents one or more elements selected from the group consisting of alkali metal elements), M2 (M2 represents one or more elements selected from the group consisting of Mn, Fe, Co and Ni), M3 (M3 has the same meaning as that described above) and O on its surface, and when the molar ratio (M3/M2) of the number of M3 atoms (mol) to the number of M2 atoms (mol) on the surface of the positive electrode active material is represented by A and the BET specific surface area of the positive electro

Abstract: The present invention provides a powder for a positive electrode active material containing particles containing two or more elements selected from transition metal elements and in the cumulative particle size distribution on the basis of volume of the particles composing the powder, the particle diameter (D50) observed from the finer particle side at 50% accumulation is in the range of 0.1 ?m or larger and 10 ?m or smaller, and 95% by volume or more of the particles composing the powder exit in the range of 0.3 time or more and 3 times or less as large as D50.

Abstract: There is provided a method for producing an active material for a nonaqueous secondary battery, including firing an adherend in which a compound containing an element A (at least one element selected from among B, Al, Ga, In, Si, Ge, Sn, Mg and transition metal elements) is adhered to a particle surface of a material capable of being doped and dedoped with lithium ions, in a water-containing atmosphere so that weight increasing rate of the adherend is in a range of 0.1% by weight or more and 5.0% by weight or less, and firing the adherend.