Abstract: Disclosed is a powder comprising a lithium-containing compound and a nickel-containing mixed metal compound, and satisfying the following requirements of (1) and (2) when the powder is analyzed by plasma emission spectrometry of particles: (1) an absolute deviation of a synchronous distribution chart against an approximated straight-line is 0.10 or less, wherein the approximated straight-line is evaluated from a synchronous distribution chart obtained by plotting an emission intensity of lithium and an emission intensity of nickel of each particle composing of the powder, and (2) a release rate of lithium evaluated by the following formula is 80 or less: Release rate of lithium=(nb/na)×100 wherein, na is the number of particles containing lithium in the powder, and nb is the number of particles containing lithium and not containing nickel in the powder.

Abstract: Disclosed is a powder comprising a lithium-containing compound and a nickel-containing mixed metal compound, and satisfying the following requirements of (1) and (2) when the powder is analyzed by plasma emission spectrometry of particles: (1) an absolute deviation of a synchronous distribution chart against an approximated straight-line is 0.10 or less, wherein the approximated straight-line is evaluated from a synchronous distribution chart obtained by plotting an emission intensity of lithium and an emission intensity of nickel of each particle composing of the powder, and (2) a release rate of lithium evaluated by the following formula is 80 or less: Release rate of lithium=(nb/na)×100 wherein, na is the number of particles containing lithium in the powder, and nb is the number of particles containing lithium and not containing nickel in the powder.

Abstract: The present invention provides a method for recovering an oxide-containing battery material from a waste battery material. The recovery method includes steps (1) and (2) in this order: (1) a step of immersing a base taken out of the waste battery material and the base having an oxide-containing battery material, in a solvent that does not substantially dissolve the oxide, and stripping the battery material from the base thereby, and (2) a step of separating the battery material from the base.

Abstract: A method for producing a layered lithium mixed metal oxide according to the present invention comprises a step of calcining, in the presence of an inert flux composed of a chloride, a lithium mixed metal oxide raw material containing a transition metal element and a lithium element so that the molar ratio of the lithium element to the transition metal element may fall within a range of 1 or more and 2 or less.

Abstract: An ultraviolet excited light-emitting device is disclosed. The ultraviolet excited light-emitting device comprises a phosphor having at least one selected from the group consisting of Eu and Mn as an activator and a compound represented by a formula (1): M1M2M23O6??(1) wherein M1 is at least two selected from the group consisting of Ca, Sr and Ba, or Sr or Ba, M2 is at least one selected from the group consisting of Mg and Zn, and M3 is at least one selected from the group consisting of Si and Ge in the formula (1).

Abstract: The present invention provides a phosphor and an electron beam excited light-emitting device. The phosphor comprises a compound represented by the formula (I) ; and at least one selected from the group consisting of Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Mn as an activator, M1O.mM2O.nM3O2 ??(I) wherein M1 is at least two selected from the group consisting of Ca, Sr and Ba, Sr alone or Ba alone, M2 is at least one selected from the group consisting of Mg and Zn, M3 is at least one selected from the group consisting of Si, Ge and Zr, 0.8?m?1.2, and 1.6?n?2.4. The electron beam excited light-emitting device comprises the above phosphor.

Abstract: A phosphor and a vacuum ultraviolet excited light-emitting device are disclosed. The phosphor comprises a compound represented by the following formula (1) Ca1?a?bSraEubMgSi2O6??(1) wherein 0.1<a?0.35 and 0.003?b?0.02. The phosphor is excited by vacuum ultraviolet and emits blue light with high brightness. The vacuum ultraviolet excited light-emitting device comprises the above phosphor.

Abstract: The present invention provides a phosphor and an ultraviolet excited light-emitting device. The phosphor comprises a compound represented by the formula (I): Ca1-b-cSrbEucMgSi2O6 (I) wherein 0.5<b<1, and 0<c?0.1. The ultraviolet excited light-emitting device comprises the above phosphor.

Abstract: Disclosed are a phosphor, a phosphor paste, and a light-emitting device. The phosphor comprises a compound represented by the formula (1): CaaSrbEu1-a-bMgSi2O6??(1) wherein 0.4?a?0.7, 0.4?b?0.7, and a+b?0.990. The phosphor paste comprises the above phosphor and an organic compound. The light-emitting device comprises the above phosphor and an electrode.

Abstract: A phosphor and a vacuum ultraviolet excited light-emitting device are disclosed. The phosphor comprises a compound represented by the following formula (1) Ca1?a?bSraEubMgSi2O6??(1) wherein 0.1<a?0.35 and 0.003?b?0.02. The phosphor is excited by vacuum ultraviolet and emits blue light with high brightness. The vacuum ultraviolet excited light-emitting device comprises the above phosphor.

Abstract: An ultraviolet excited light-emitting device is disclosed. The ultraviolet excited light-emitting device comprises a phosphor having at least one selected from the group consisting of Eu and Mn as an activator and a compound represented by a formula (1): M1M2M23O6 ??(1) wherein M1 is at least two selected from the group consisting of Ca, Sr and Ba, or Sr or Ba, M2 is at least one selected from the group consisting of Mg and Zn, and M3 is at least one selected from the group consisting of Si and Ge in the formula (1).

Abstract: The objective of the present invention is to provide a phosphor for use in a light emitting element excited by vacuum ultraviolet-ray that has high brightness even after plasma exposure. This object is achieved by a phosphor comprising a compound represented by a formula M11−aM211−bMna+bO18−(a+b)/2 (wherein, M1 represents at least one of materials selected from the group consisting of La, Y and Gd, and M2 represents at least one of materials selected from the group consisting of A1 and Ga, a represents a number in a range from not less than 0 to less than 1, b represents a number in a range from not less than 0 to less than 1, and sum of a and b is greater than 0), and by a light emitting element excited by vacuum ultraviolet-ray comprising the above-mentioned phosphor.

Abstract: The objective of the present invention is to provide a phosphor for use in a light emitting element excited by vacuum ultraviolet-ray that has high brightness even after plasma exposure. This object is achieved by a phosphor comprising a compound represented by a formula M11−aM211−bMna+bO18−(a+b)/2 (wherein, M1 represents at least one of materials selected from the group consisting of La, Y and Gd, and M2 represents at least one of materials selected from the group consisting of Al and Ga, a represents a number in a range from not less than 0 to less than 1, b represents a number in a range from not less than 0 to less than 1, and sum of a and b is greater than 0), and by a light emitting element excited by vacuum ultraviolet-ray comprising the above-mentioned phosphor.