Abstract: A disclosed positive electrode for a nonaqueous electrolyte secondary battery includes a positive-electrode current collector and a positive-electrode mixture layer on a surface of the positive-electrode current collector. The positive-electrode mixture layer includes a positive-electrode active material, a conductive material, and binders. The binders include a polyvinylpyrrolidone-based compound and a cellulose derivative.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution, wherein the positive electrode includes a composite oxide including lithium as a first metal, and a second metal X other than lithium; in the composite oxide, the second metal X includes Ni, Al, and Mn; the second metal X does not contain Co or the atomic ratio Co/X of Co to the second metal X is 0.02 or less; and the electrolyte solution contains a chain carboxylic acid ester having 2 to 4 carbon atoms, and a cyclic compound having a ring structure composed of 2 oxygen atoms and 3 to 5 carbon atoms.

Abstract: This positive electrode active material for non-aqueous electrolyte secondary batteries comprises: lithium transition metal oxide particles; a metal compound which contains a metal element M and adheres to the surfaces of the lithium transition metal oxide particles; and a lithium metal compound which contains lithium (Li) and the metal element M and adheres to the surfaces of the lithium transition metal oxide particles. In this connection, the metal element M is composed of at least one substance that is selected from among aluminum (Al), titanium (Ti), manganese (Mn), gallium (Ga), molybdenum (Mo), tin (Sn), tungsten (W) and bismuth (Bi).

Abstract: A lithium ion secondary battery including a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte. The positive electrode active material is a lithium transition metal oxide that contains niobium and is represented by xLi[Li1/3Mn2/3-qNbq]O2·(1?x)LiM1-rNbrO2 (0<x<1, 0<xq+(1?x)r?0.3, 0?q?0.3, 0?r?0.3, and M: at least one element selected from the group consisting of nickel, cobalt, and manganese). During initial charging, oxygen desorbs from the positive electrode active material.

Abstract: A lithium ion secondary battery including a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte. The positive electrode active material is a lithium transition metal oxide that contains niobium and is represented by xLi[Li1/3Mn2/3-qNbq]O2·(1?x)LiM1-rNbrO2 (0<x<1, 0<xq+(1?x)r?0.3, 0?q?0.3, 0?r?0.3, and M: at least one element selected from the group consisting of nickel, cobalt, and manganese). During initial charging, oxygen desorbs from the positive electrode active material.

Abstract: A non-aqueous electrolyte secondary battery has a positive electrode containing a positive electrode active material, a negative electrode, and a non-aqueous electrolyte solution in which an electrolyte is dissolved in a non-aqueous solvent. The positive electrode active material includes a lithium-containing transition metal oxide that releases oxygen during initial charge, and the non-aqueous solvent contains a fluorinated cyclic carbonate in which fluorine atoms are directly bonded to a carbonate ring.

Abstract: A low-cost, high-discharge capacity density non-aqueous electrolyte secondary battery is provided. The battery includes a positive electrode, a non-aqueous electrolyte containing sodium ions, and a negative electrode having a thin-film negative electrode active material containing germanium (Ge) as its main active material or a negative electrode active material comprising particles containing germanium as its main active material.

Abstract: A dielectric ceramic obtained by firing a raw material comprising an alumina powder, a crystallizable glass powder mainly containing SiO2, CaO and MgO, and a noncrystallizable glass powder mainly containing SiO2, B2O3 and Na2O. After the firing, the dielectric ceramic contains an alumina crystal phase, a diopside crystal phase (Ca(Mg, Al)(Si, Al)2O6) and a magnesia-spinel crystal phase (MgAl2O4) and has a porosity of not higher than 2.2% when measured by a mercury penetration method.

Abstract: A dielectric ceramic material which is obtained by firing a raw material comprising an alumina powder and a glass powder containing at least SiO2 and MgO, the dielectric ceramic material being characterized in that a ratio (MgAl2O4 (311)/Al2O3 (116)) in X-ray diffraction peak intensity of an MgAl2O4 (311) to an Al2O3 (116) is at least 0.5.

Abstract: A dielectric ceramic obtained by firing a raw material comprising an alumina powder, a crystallizable glass powder mainly containing SiO2, CaO and MgO, and a noncrystallizable glass powder mainly containing SiO2, B2O3 and Na2O. After the firing, the dielectric ceramic contains an alumina crystal phase, a diopside crystal phase (Ca(Mg, Al)(Si, Al)2O6) and a magnesia-spinel crystal phase (MgAl2O4) and has a porosity of not higher than 2.2% when measured by a mercury penetration method.

Abstract: A dielectric ceramic material which is obtained by firing a raw material comprising an alumina powder and a glass powder containing at least SiO2 and MgO, the dielectric ceramic material being characterized in that a ratio (MgAl2O4 (311)/Al2O3 (116)) in X-ray diffraction peak intensity of an MgAl2O4 (311) to an Al2O3 (116) is at least 0.5.