| abstract |
Disclosed are a composite electrode active material and a supercapacitor using the same, and more particularly, an electrode active material having M 1-x Ru x O 3 (M=Sr, Ba, Mg) and a supercapacitor using the same, wherein the electrode active material is characterized by comprising M 1-x Ru x O 3 , where M is at least one selected from a group consisting of strontium, barium and magnesium, and a method for fabricating a composite electrode active material comprises (a) preparing a spinning solution containing a precursor of M oxide, a precursor of Ru oxide, a polymer and a solvent, (b) spinning the spinning solution on a collector to fabricate a nanofiber web having M 1-x Ru x O 3 precursor, and (c) performing heat treatment for the nanofiber web to remove the polymer so as to make an electrode active material in the structure of porous nanofiber web having M 1-x Ru x O 3 , wherein the M comprises at least one selected from a group consisting of strontium, barium and magnesium. |