METHOD FOR PRODUCING SURFACE-TREATED OXIDE PARTICLES, AND OXIDE PARTICLES PRODUCED BY SAID PRODUCTION METHOD

摘要

Provided is a method for producing surface-treated oxide particles which can be used suitably in an active material layer for a positive electrode or a negative electrode in a storage battery (secondary battery). Oxide particles in which an alkaline compound is contained in a part or the whole area of the surface of each of the particles are brought into contact with a gas containing a volatile acidic compound to produce a neutralization product by a gas phase reaction, thereby producing surface-treated oxide particles in which the neutralization product is contained in a part or the whole area of the surface of each of the particles. The alkaline compound comprises at least one compound selected from compounds respectively containing lithium (Li), sodium (Na) and magnesium (Mg), the volatile acidic compound comprises at least one compound selected from compounds respectively containing boron (B), phosphorus (P) and silicon (Si), and the oxide particles comprise an alkali-composited oxide containing at least one transition metal selected from manganese, cobalt, nickel, iron and titanium.