Abstract: A lithium ion conductive material has a composition formula of Lia(OH)bFcBr, where 1.8?a?2.3, b=a?c?1, 0.01?c?0.11, and includes an antiperovskite-type crystal phase. Preferably, the lithium ion conductive material further includes a layered antiperovskite-type crystal phase. More preferably, 0?B/(A+B)?0.2 is satisfied, where A is the peak intensity in the vicinity of 2?=31.2° in the X-ray diffractometry using Cu-K? ray and B is the peak intensity in the vicinity of 2?=30.2°.

Abstract: A solid electrolyte is composed primarily of a component expressed by a composition formula of Lia+dMbXcAeOf by using values a to f that are greater than 0, where M is an element serving as a trivalent cation, X is a halogen element, and A is a sulfur element or a phosphorus element, wherein 0.8c?(a+3b)?1.2c and 1.6f?(d+n×e)?2.4f are satisfied, where when A is a sulfur element, n is 4 or 6, and when A is a phosphorus element, n is 5.

Abstract: Provided is a solid electrolyte which contains a composition expressed by 3LiOH·Li2SO4. The solid electrolyte has a lithium ion conductivity of 0.1×10?6 S/cm or more at 25° C. and an activation energy of 0.6 eV or more.

Abstract: The composite sintered body includes Al2O3, and MgAl2O4. The content of Al2O3 in the composite sintered body is not less than 95.5% by weight. The average sintered grain size of Al2O3 in the composite sintered body is not less than 2 ?m and not greater than 4 ?m. The standard deviation of sintered grain size distribution of Al2O3 in the composite sintered body is not greater than 0.35. The bulk density of the composite sintered body is not less than 3.94 g/cm3 and not greater than 3.98 g/cm3. In the composite sintered body, the ratio of amount of crystal phase of MgAl2O4 to that of Al2O3 is not less than 0.003 and not greater than 0.01.

Abstract: A method of manufacturing a composite sintered body includes a step (Step S11) of molding mixed powder in which Al2O3, SiC, and MgO are mixed, into a green body having a predetermined shape and a step (Step S12) of generating a composite sintered body by sintering the green body. Then, in Step S11, the ratio of SiC to the mixed powder is not lower than 4.0 weight percentage and not higher than 13.0 weight percentage. Further, the purity of Al2O3 in Step S11 is not lower than 99.9%. It is thereby possible to suppress the abnormal grain growth of Al2O3 and suitably manufacture a composite sintered body having high relative dielectric constant and withstand voltage, and low tan ?.

Abstract: Provided is an all-solid lithium battery including: a low-angle oriented positive electrode plate that is a lithium complex oxide sintered plate having a porosity of 10 to 50%; a negative electrode plate containing Ti and capable of intercalating and deintercalating lithium ions at 0.4 V or higher (vs. Li/Li+); and a solid electrolyte having a melting point lower than the melting point or pyrolytic temperature of the oriented positive electrode plate or the negative electrode plate, wherein at least 30% of pores in the oriented positive electrode plate is filled with the solid electrolyte in an observation of a cross-section perpendicular to a main face of the oriented positive electrode plate.

Abstract: There is provided a lithium composite oxide which is composed of a lithium composite oxide having a layered rock salt structure containing Li, Ni, Co and Mn. The lithium composite oxide sintered plate has a porosity of 20 to 40%, a mean pore diameter of 3.5 ?m or larger and an interfacial length per 1 ?m2 of unit cross-sectional area of 0.45 ?m or shorter.

Abstract: There is provided a positive electrode active material containing a lithium composite oxide having a layered rock salt structure containing Li, Ni, Co and Mn, and further containing at least one additive selected from Li3BO3, Li3PO4 and Li2SO4.

Abstract: Provided is a secondary battery including: a positive electrode plate composed of an inorganic material containing a positive electrode active material in an oxide form and having a thickness of 25 ?m or more; a negative electrode plate composed of an inorganic material containing a negative electrode active material in an oxide form and having a thickness of 25 ?m or more; and an inorganic solid electrolyte, the secondary battery being charged and discharged at a temperature of 100° C. or higher.

Abstract: There is provided an all-solid-state lithium battery including: a positive-electrode plate composed of a lithium complex oxide sintered body having a layered rock-salt structure; a solid electrolyte layer composed of a lithium-ion-conductive antiperovskite material; a negative-electrode plate containing Ti and permitting intercalation and deintercalation of lithium ions at 0.4 (vs. Li/Li+) V or more; a positive-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the positive-electrode plate; a negative-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the negative-electrode plate; a positive-electrode covering metal membrane provided at an interface between the positive-electrode plate and the solid electrolyte layer; and a negative-electrode covering metal membrane provided at an interface between the negative-electrode plate and the solid electrolyte layer.

Abstract: A sintered compact includes an alumina phase as a primary phase, and further includes an amorphous phase containing Si and Mn and a cordierite phase. The sintered compact has a porosity of higher than or equal to 1.1% and less than or equal to 5.0%. Preferably, I1/(I1+I2) is greater than or equal to 0.20 and less than or equal to 0.45, where I1 is the strength of the main peak of cordierite obtained by an XRD method, and I2 is the strength of the main peak of alumina.

Abstract: The composite sintered body includes AlN and MgAl2O4. The open porosity of the composite sintered body is lower than 0.1%. The relative density of the composite sintered body is not lower than 99.5%. The total percentage of the AlN and the MgAl2O4 contained in the composite sintered body is not lower than 95 weight percentage and not higher than 100 weight percentage. The percentage of the MgAl2O4 contained in the composite sintered body is not lower than 15 weight percentage and not higher than 70 weight percentage. It is thereby possible to provide a high-density composite sintered body having high plasma corrosion resistance, high volume resistivity, and high thermal conductivity.

Abstract: Provided is a solid electrolyte which is identified as 3LiOH.Li2SO4 by diffractometry. The solid electrolyte further contains boron.

Abstract: Provided is an all-solid-state secondary battery including a solid electrolyte which is identified as 3LiOH.Li2SO4 by X-ray diffraction. The solid electrolyte further contains boron.

Abstract: A cordierite-based sintered body according to the present invention contains cordierite as a main component and silicon nitride or silicon carbide. The cordierite-based sintered body preferably has a thermal expansion coefficient less than 2.4 ppm/° C. at 40° C. to 400° C., an open porosity of 0.5% or less, and an average grain size of 1 ?m or less.

Abstract: A MgO-based ceramic film according to the present invention contains crystalline phases of MgO and MgAl2O4, and Al is dissolved in the MgO to form a solid-solution. The ceramic film exhibits a diffraction peak representing the (200) plane of MgO at an angle 2? of more than 42.92° in CuK? XRD measurement. A shoulder preferably appears on the higher angle side of the peak representing the (200) plane of MgO. The mass ratio MgO/Al2O3 of MgO to Al2O3 converted from Mg and Al in terms of oxides is preferably higher than 2.33.

Abstract: The ceramic structure 10 includes a discoid ceramic base 12 and an electrode 14 buried in the ceramic base 12. The ceramic base 12 is a sintered body composed principally of alumina or a rare-earth metal oxide and has a thermal expansion coefficient of 7.5 to 9.5 ppm/K over the range of 40° C. to 1200° C. The electrode 14 is composed principally of metal ruthenium. The electrode 14 may be formed in the shape of a sheet. Alternatively, the electrode 14 may be patterned in the manner of a one-stroke sketch so as to extend over the entire cross section of the ceramic base 12.

Abstract: A composite substrate includes a supporting substrate and a functional substrate that are directly joined together, the supporting substrate being a sintered sialon body.

Abstract: A solid electrolyte is constituted by lithium phosphorus oxynitride (LiPON). A multiplication value obtained by multiplying a ratio of a peak intensity of nitrogen atoms having a single bond with one P atom and having a double bond with another P atom to a peak intensity of an N2 state in a Raman spectroscopy spectrum by a ratio of a content amount of N atoms to a content amount of P atoms is greater than or equal to 0.40.

Abstract: A lithium ion conductive material has a composition formula of Lia(OH)bFcBr, where 1.8?a?2.3, b=a?c?1, 0.01?c?0.11, and includes an antiperovskite-type crystal phase. Preferably, the lithium ion conductive material further includes a layered antiperovskite-type crystal phase. More preferably, 0?B/(A+B)?0.2 is satisfied, where A is the peak intensity in the vicinity of 2?=31.2° in the X-ray diffractometry using Cu-K? ray and B is the peak intensity in the vicinity of 2?=30.2°.