Fig. 6.

Structural characterization and electrochemical performance analysis of TMD (MoSe₂) as a supercapacitor electrode: a, b TEM images of MoSe₂ nanosheets at low magnification. c HRTEM image of the MoSe₂ sheets with the FFT pattern demonstrated in the inset. d XRD spectra of the few-layered MoSe₂ nanosheets showing the characteristic peaks. e Characteristic Raman spectra of the few-layered MoSe₂ nanosheets where the A_1g and ${\text{E}}_{2\text{g}}^1$ vibration modes are clearly visible. f CV of the few-layered MoSe₂ sample in 0.5 M H₂SO₄ with scan rates varying from 2 to 125 mV s⁻¹. g Corresponding specific capacitance values at the given scan rates. h First-cycle GCD curves at different current rates, of the few-layered MoSe₂ sample. i Specific capacitance values for the corresponding current rates. j Specific capacitance retention of the few-layered MoSe₂ sample, being run for 10,000 cycles at a current rate of 5 A g⁻¹ in 0.5 M H₂SO₄ electrolyte [129]. Copyright 2015 Royal Society of Chemistry