POWDER OF LITHIUM COMPLEX COMPOUND PARTICLES, METHOD FOR PRODUCING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY CELL

摘要

Provided is a powder of lithium complex compound particles, wherein when the particle surface of the powder of lithium complex compound particles represented byLi1+xNi1-y-zCoyMzO2(M=B, Al)is analyzed using a time-of-flight secondary ion mass spectrometer, the ionic strength ratio A (LiO-/NiO2 -) is 0.3 or less and the ionic strength ratio B (Li3CO3 +/Ni+) is 20 or less.  The powder of lithium complex compound particles can be used as the positive electrode active material of a secondary cell having good cycle properties and excellent high-temperature shelf life.