Patent ID: 9627680
Date: 2017-04-18
CPC Classifications: C01G,C01P,H01M,Y02E,Y02P

Claim:
1. A method of manufacturing surface-treated oxide particles, the oxide particles each comprising a secondary particle formed with primary particles, and a neutralization product being formed on a surface of the secondary particle and on a surface exposed to the side of an open pore between the primary particles, the surface exposed to the side of an open pore between the primary particles being a portion of surfaces of the primary particles inside the secondary particle, the method comprising: contacting oxide particles having an alkaline compound on the particle surface with a gas comprising a volatile acidic compound, and forming the neutralization product by a reaction of the alkaline compound with the acidic compound in the gas phase, wherein the alkaline compound is any one or more selected from the group of compounds containing lithium (Li), sodium (Na), and magnesium (Mg), and the volatile acidic compound is any one or more selected from the group of compounds containing boron (B), phosphorus (P), and silicon (Si), and the oxide particles are of an alkali composite oxide comprising any one or more transition metals selected from the group of manganese, cobalt, nickel, iron, titanium, and comprising any one or more alkali elements selected from the group of lithium (Li), sodium (Na), and magnesium (Mg).