Liquid Phase Plasma Synthesis of Iron OxideCarbon Composite as Dielectric Material for Capacitor

Abstract EN

Iron oxide/carbon composite was synthesized using a liquid phase plasma process to be used as the electrode of supercapacitor.

Spherical iron oxide nanoparticles with the size of 5~10 nm were dispersed uniformly on carbon powder surface.

The specific capacitance of the composite increased with increasing quantity of iron oxide precipitate on the carbon powder up to a certain quantity.

When the quantity of the iron oxide precipitate exceeds the threshold, however, the specific capacitance was rather reduced by the addition of precipitate.

The iron oxide/carbon composite containing an optimum quantity (0.33 atomic %) of iron oxide precipitate exhibited the smallest resistance and the largest initial resistance slope.