Abstract We reported an asymmetric supercapacitor technology where RuO2/TiO2 nanotube composite was used as positive electrode and the activated carbon as negative electrode in 1 mol/L KOH electrolyte solution. The electrochemical capacitance performance of the asymmetric supercapacitor was tested by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge …
a b s t r a c t In thiswork,we reported an asymmetric supercapacitor in which active carbon (AC)was used as a positive electrode and carbon-coated LiTi2(PO4)3 as a negative electrode in 1M Li2SO4 aqueous electrolyte. The LiTi2(PO4)3/AC hybrid supercapacitor showed a sloping voltage profile from 0.3 to 1.5 V, at an average voltage near 0.9 V, and delivered a capacity of 30mAhg−1 and an ene…