LLZO METHOD FOR MANUFACTURING CUBIC STRUCTURE LLZO BY LOW TEMPERATURE CALCINATION PROCESS

摘要

The present invention relates to a method for manufacturing aluminum-doped cubic LLZO. The method comprises the steps of: (a) preparing a precursor solution in which metal salts, including lithium salt, lanthanum salt, zirconium salt and aluminum salt, fuel, and distilled water are mixed; (b) subjecting the precursor solution to a glycine nitrate process to produce a powder; and (c) calcining the powder to produce cubic LLZO represented by chemical formula 1, Li_xLa_yZr_zO_12. Accordingly, the method of the present invention serves to produce the cubic LLZO having improved purity and ion conductivity while lowering the calcination temperature. In chemical formula 1, x is between 6 and 9 inclusively, y is between 2 and 4 inclusively, and z is between 1 and 3 inclusively.