Fabrication and supercapacitive properties of a thick electrode of carbon nanotube-RuO2 core-shell hybrid material with a high RuO2 loading

The supercapacitive properties of a thick electrode of the CNT-RuO2 core-shell hybrid material with a RuO2 loading amount of 82.4 wt% were investigated. By a comparison between the specific capacitance of the CNT-RuO2 electrode before and after subtracting the effect of the voltage drop of discharge curves caused by the inner resistance of the CNT-RuO2 symmetrical supercapacitor, the electronic conductivity is confirmed to be more important than the proton diffusion kinetic in determining its rate capability.