MULTICOMPONENT NANO COMPOSITE OXIDE POWDER AND A PREPARATION METHOD THEREFOR, A FABRICATION METHOD OF AN ELECTRODE USING THE SAME, A THIN FILM BATTERY HAVING THE ELECTRODE AND A FABRICATION METHOD FOR THE BATTERY

摘要

The present invention relates to a preparation method of multicomponent nano composite oxide powder, a fabrication method of an electrode using the same, a thin film battery having the electrode and a fabrication method for the thin film battery, in which two or more metal precursors and a polymer are electrospun together and then thermally processed to obtain nano aggregates or multicomponent nano composite oxide powder in the form of nanoparticles, and the resulting nano composite oxide powder is used as an electrode active material for anodes and cathodes to realize the mass production of electrodes and thin film batteries at a low cost. The preparation method of multicomponent nano composite oxide powder of the present invention comprises: mixing two or more metal precursors with a fiber-forming polymer and a solvent to prepare a spinning solution; electrospinning the spinning solution to form a metal precursor-bearing polymeric complex nanofiber; converting the complex nanofiber into a multicomponent nano composite oxide particulate fiber by removing the polymer from the complex nanofiber through thermal processing under oxidation atmosphere; and pulverizing the obtained nano composite oxide powder to form multicomponent nano composite oxide powder.