Abstract: This anode active material for a lithium secondary battery is an aluminum-containing metal in which a non-aluminum phase is dispersed in an aluminum phase, the aluminum-containing metal is a rolled material rolled in one direction, and the non-aluminum phase contains any one or both of B and Ti and satisfies the following (1) and (2) in an image acquired by a method described in the following image acquisition conditions.

Abstract: A fluorescent material has a core-shell structure. The core contains a crystal phase of an inorganic compound having Formula: MxMgaAlyOzNw (A); M represents a metal; x satisfies 0.001?x?0.3; a satisfies 0?a?1.0?x; y satisfies 1.2?y?11.3; z satisfies 2.8?z?18; and w satisfies 0?w?1.0. The shell is formed on at least a part of a surface of the core and contains boron and/or silicon. The core has a tetrahedral site occupancy of M1 of 0.032 or more and a specific surface area of 0.01 to 4.1 m2/g. A ratio Y/X of a peak area value Y of boron or silicon to a peak area value X of M present in the shell satisfies 0<Y/X?0.095 when EDX measurement of a cross section of the fluorescent material is performed.

Abstract: Provided is a lithium secondary battery including: an aluminum anode configured to occlude and release lithium ions: a cathode configured to occlude and release lithium ions; and an electrolyte, in which the aluminum anode is formed of an aluminum-containing metal, the cathode has a cathode active material, and the cathode active material contains a metal oxide containing nickel.

Abstract: Provided is a laminate for a lithium secondary battery including: a metal anode configured to occlude and release lithium ions; a cathode configured to occlude and release lithium ions; and an electrolyte, in which the metal anode is formed of an aluminum-containing metal, the metal anode has a plate shape, and a surface of flat surfaces of the metal anode facing the cathode has a ceramic separator or a solid electrolyte layer.

Abstract: This particle contains at least one titanium compound crystal grain, and satisfies requirements 1 and 2. Requirement 1: |dA(T)/dT| of the titanium compound crystal grain satisfies 10 ppm/° C. or more at at least one temperature T1 in a range of ?200° C. to 1200° C. A is (a-axis (shorter axis) lattice constant of the titanium compound crystal grain)/(c-axis (longer axis) lattice constant of the titanium compound crystal grain), and each of the lattice constants is obtained by X-ray diffractometry of the titanium compound crystal grain. Requirement 2: the particle contains a pore, and in a cross section of the particle, the pore has an average equivalent circle diameter of 0.8 ?m or more and 30 ?m or less, and the titanium compound crystal grain has an average equivalent circle diameter of 1 ?m or more and 70 ?m or less.

Abstract: The present invention relates to a lithium metal composite oxide with a layered structure wherein: at least Li, Ni, and an element X are included; the element X is at least one element selected from the group consisting of Co, Mn, Mg, Ca, Sr, Ba, Zn, B, Al, Ga, Ti, Zr, Ge, Fe, Cu, Cr, V, W, Mo, Sc, Y, Nb, La, Ta, Tc, Ru, Rh, Pd, Ag, Cd, In, and Sn; and an average three-dimensional particle unevenness of primary particles with an equivalent spherical diameter of at least 1.0 ?m is at least 1.91 and less than 2.9.

Abstract: A lithium metal composite oxide powder having a layered structure and containing at least Li, Ni, and an element X, in which, in a cumulative frequency distribution curve of R ranging 0% to 100% as a whole, R(90) that is a value of R at a point where a cumulative frequency from a small side of the R reaches 90% is 1.7 or more and 3.7 or less. R is a value of O/(Ni+X) that is a ratio of an amount of a substance of oxygen, which is indicated by O, to a total amount of substances of nickel and the element X, which is indicated by Ni+X, in one particle of a lithium metal composite oxide that is contained in the lithium metal composite oxide powder. The amounts of the substances of nickel, the element X, and oxygen are obtained by energy-dispersive X-ray (EDX) spectroscopy in which an accelerating voltage is set to 1100 V regarding the one particle of the lithium metal composite oxide.

Abstract: This lithium metal composite oxide powder satisfies the following requirement (1) and requirement (2). Requirement (1): a peak top is present in a binding energy range of 52 eV to 58 eV, and the spectrum in the above-described range is separated into waveforms of a peak A having a peak top at 53.5±1.0 eV and a peak B having a peak top at 55.5±1.0 eV. A value of P(A)/P(B) that is a ratio between areas of the peak A and the peak B is 0.3 or more and 3.0 or less. Requirement (2): X(M)/X(Li) that is a ratio between X(Li) that is an amount of lithium that is obtained based on a peak area of a Li1s spectrum and X(M) that is an element amount of an element M obtained based on a peak area of a spectrum of the element M is 0.2 or more and 2.0 or less.

Abstract: A process for producing a heat-resistant aluminum hydroxide, comprising the step of applying a heating treatment to a gibbsite-type aluminum hydroxide at a pressure equal to or higher than an atmospheric pressure and equal to or lower than 0.3 MPa, in an atmosphere whose water vapor molar fraction is equal to or higher than 0.03 and equal to or lower than 1, and at a temperature equal to or higher than 180° C. and equal to or lower than 300° C.