A Non-aqueous Hybrid Supercapacitor with Porous Anatase TiO2 Nanoparticles Anode and Activated Carbon Cathode

The porous anatase TiO2 nanoparticles were synthesized by a facile hydrothermal method and characterized by scanning electronic microscopy (SEM), transmission electronic microscopy (TEM) and powder X-ray diffraction (XRD). A non-aqueous hybrid supercapacitorwith the as-prepared TiO2 nanoparticles anode and activated carbon (AC, BP-2000) cathode was fabricated and investigated electrochemically. The results showed that the hybrid supercapacitor with the optimal mass ratio 1:2 of AC to TiO2 delivers a specific capacitance of 48 F g(-1) at a current rate of 100 mA g(-1) and exhibits a good cycling stability. Within a voltage window of 0-3 V, 60.75 W h kg(-1) of energy is acquired at 150 W kg(-1), indicating the promising application of such hybrid supercapacitor in achieving both high energy density and power density to power the burgeoning hybrid electric vehicles (HEVs)/electric vehicles (EVs).