Manufacturing method of ferric oxide anode active material for lithium secondary battery and manufacturing method of the lithium secondary battery

摘要

the present invention, iron salts which can be sealed inside the reactor, lithium acetate and a step of putting a mixture solution of an organic solvent to the reaction vessel with the seal over the cover, the method by heating in a closed reactor to the reaction temperature rises to higher than the boiling point of the target is equal to or organic solvent with the boiling point of the organic solvent, the objective By keeping the temperature of the reactor at the reaction temperature by reaction of the iron salt and the lithium acetate, -Fe ₂ O ₃ of nucleation when iron (Fe) ion acetate particles are adsorbed on the -Fe ₂ O ₃ With the growth of the particles is inhibited -Fe ₂ O ₃ it is formed, and a step in which settle to the bottom of the reactor by the specific gravity difference separating the precipitate came up selectively by that step and, optionally, separating the precipitate sitting sink to the bottom of the reactor, washed and dried to give -Fe ₂ O ₃ , and a step of obtaining a negative electrode active material, the -Fe ₂ O ₃ negative active material Preparation of lithium secondary battery 2, the iron-based oxidizing agent, characterized in that the negative electrode active material having an average particle diameter of the plurality of pores is 20~200nm distribution represents a diameter of the porous spherical 1~10 or on the surface and the bulk of the particles have a cubic structure It is a method and relates to a method for producing a lithium secondary battery using the same. ;