| abstract |
At least one of the aqueous solution A containing lithium, the aqueous solution B containing iron, manganese, cobalt, or nickel, and the aqueous solution C containing phosphoric acid contains graphene oxide. A mixed solution E containing a precipitate D is prepared by dropping aqueous solution A into aqueous solution C. The mixed liquid G containing the precipitate F is prepared by dropping the mixed liquid E into the aqueous solution B. The mixture solution H is produced by heating the mixture solution G in a pressurized atmosphere, and then the mixture solution H is filtered. Thereby, particles of a compound containing lithium and oxygen having a small size are obtained. |