LITHIUM IRON COMPLEX OXIDE, CATHODE MATERIAL, CATHODE, AND LITHIUM-ION SECONDARY BATTERY

A lithium iron complex oxide is represented by LiFeO, two peaks with different quadrupole splitting values (QS) analyzed using Fe Mössbauer spectroscopy are shown, one of the two peaks, a peak A, satisfies QS>0, and the other one of the two peaks, a peak B, satisfies QS=0.