There is provided a supercapacitor with a significantly reduced internal
resistance. The supercapacitor comprises two electrodes in which each of
the two electrodes is comprised of a current collector and an electrode
active material adhered to the current collector, a separator positioned
between the two electrodes, an electrolyte and a package, wherein the
current collector is a metal thin plate having a conductive metal oxide
layer thereon and the electrode active material is adhered on a surface
of the conductive metal oxide layer. The supercapacitor according to the
present invention has a significantly reduced internal resistance and a
highly enhanced charge capacitance.