CATHODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, TRANSITION METAL HYDROXIDE PRECURSOR, MANUFACTURING METHOD OF TRANSITION METAL HYDROXIDE PRECURSOR, MANUFACTURING METHOD OF CATHODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

To provide a cathode active material of which the discharge capacity per volume is great, a high-density hydroxide precursor for manufacturing the cathode active material, an electrode for nonaqueous electrolyte secondary battery using the cathode active material, and a nonaqueous electrolyte secondary battery.SOLUTION: The present invention relates to a cathode active material for nonaqueous electrolyte battery containing a lithium transition metal composite oxide. The lithium transition metal composite oxide has an α-NaFeOtype crystal structure, a molar ratio (Le/Me) of Li and a transition metal (Me) is greater than 1, and the transition metal (Me) contains Mn and Ni or Mn, Ni and Co, has a molar ratio Mn/Me greater than 0.5 and an X-ray diffraction pattern capable of belonging to R3-m. A ratio (FWHM(003)/FWHM(104)) of a surface (003) in a Miller index hkl by X-ray diffraction measurement using CuKα rays with respect to a half value width (FWHM(104)) of a surface (104) is smaller than or equal to 0.6, and a total pore volume calculated from adsorption isotherm using a nitrogen gas adsorption method by a BJH method is 0.05 cm/g or less.SELECTED DRAWING: Figure 1