Fig. 2
From: Carbon nanotubes and manganese oxide hybrid nanostructures as high performance fiber supercapacitors
Electrochemical performance of a Ni/CNT/MnO2 electrode. a CV curves measured at different scan rates in 1.0 M Na2SO4. b Galvanostatic charge/discharge curves at different current densities. c Cycling performance at 2 mA cm−1; inset: galvanostatic charge/discharge curves from the 2990th to 3000th cycle. d EIS spectrum of the same Ni/CNT/MnO2 electrode; inset: the high-frequency region (Ni/CNT/MnO2 electrode, 9-layerd MnO2 and 9-layered CNTs obtained using CV scan rate at 10 mV s−1, thickness, 48 μm)
