Manganese oxide particles and process for producing same
A manganese oxide particle having a hexagonal crystal structure or an analogous hexagonal crystal structure with an a-axis length of 8.73±1 Å and a c-axis length of 14.86±1 Å. The manganese oxide particle is preferably produced by a process including mixing an aqueous solution containing manganese (II) and an organic compound having a hydroxyl group while in a heated state with an alkali.
1. A manganese oxide particle having a hexagonal crystal structure with an a-axis length of 8.73±1 Å and a c-axis length of 14.86±1 Å, and
the manganese oxide particle has a powder XRD (Cu/Kα) pattern showing diffraction peaks at a 2θ angle of at least 11.9±1°, 24.0±1°, and 36.3±1°.
2. The manganese oxide particle according to claim 1 , being substantially free from a dopant element.