POSITIVE ELECTRODE ACTIVE MATERIAL AND POSITIVE ELECTRODE FOR NON-AQUEOUS SECONDARY BATTERY

PROBLEM TO BE SOLVED: To improve the load characteristic of a battery without hindering the active material filling performance to a positive electrode. SOLUTION: This positive electrode active material is obtained by processing the primary grains of the Li compound oxide into the porous spherical secondary grains through a calcining process, a grain decomposing and dispersing process, an atomizing process, a granulating process and a baking process. The porous spherical secondary grains has characteristic of pore mean diameter in a range at 0.1-1 μm at the time of measuring the pore distribution with the mercury penetration method, 0.01 cm3/g or more of total volume of the pores having diameter at 0.01-1 μm, 4-20 μm of mean grain diameter of the secondary grains, 1.8 g/cm2 or more of tap density, and 500 kg/cm2 or more of inflection point of the volume reduction ratio by the Cooper plot method. A positive electrode of the positive electrode active material formed on a collector is used so as to obtain a non-aqueous secondary battery having excellent load characteristic while preventing the capacity lowering even at the time of high efficient charge and discharge time.