Investigation of the Effect of the Electrochemical Performance of LixSnO1-x/G (0.3 ≤ × ≤ 0.4) Composite Electrode for Supercapacitor Applicatio

M. Alpha., U.E. Uno., Isah, K.

Abstract

In order to investigate the electrochemical effect of LixSnO1-x/G) composite (0.3 ≤ × ≤ 0.4) as an electrode material for supercapacitor application, the reduced graphene oxide (G) was synthesized using an improved modified Hummer’s method and the composites electrode material using hydrothermal reduction method. The electrode LixSnO1-x (x=0.4) gives the highest specific capacitance of 64.1 F/g, the energy density of 22.3 Wh/kg and power density of 441.1 W/kg after one cycle and after 1000 cycles CV test, it still gives the highest capacitance efficiency, equivalent to 94.6% capacitance retention. The electrode LixSnO1-x (x=0.3) gives the least specific capacitance of 61.5 F/g, energy density of 20.7 Wh/kg and power density of 330.2 W/kg after one cycle and after 1000 cycles CV test, the electrode material LixSnO1-x (x=0.3) gives the lowest capacitance efficiency, equivalent to 92.9% capacitance retention. This research highlighted the importance of introducing doped SnO in the network to reduce graphene oxide.