A method of manufacturing LiFePO4 by using wet mechanochemical milling and LiFePO4 manufactured using the method

摘要

A method of manufacturing lithium iron phosphate (LiFePO ₄ ) that can be applied to a positive active material of a lithium secondary battery is disclosed.;LiFePO ₄ manufacturing method according to the present invention comprises the steps of (a) injecting starting materials (starting materials) of LiFePO ₄ into a milling bowl (milling bowl); (b) adding a wet milling media to the milling vessel; (c) forming a precursor of LiFePO ₄ through wet milling in the milling vessel; And (d) comprises the step of synthesizing the LiFePO ₄ by heat-treating a precursor of the LiFePO ₄ formed.;LiFePO ₄ manufacturing method according to the present invention by adding a wet milling medium to the starting material for the synthesis of LiFePO ₄ , even if a separate graphite additive is added to the surface of the LiFePO ₄ synthesized with the residual graphite in the heat treatment process by the electrical conductivity of LiFePO ₄ There is an advantage to solve the problem.