Fig. 2: Electrochemical performance of the α-MoO3 in acidic PSL electrolyte.

a The first and second GCD curves of the α-MoO3 electrode at 2 A g−1 using PSL electrolyte. b The first and second CV curves of the α-MoO3 electrode at the scan rate of 1 mV s−1 using PSL electrolyte. c The inserted protons in HxMoO3 after the first and second discharge processes of GCD and CV. d GCD curves recorded with different rates. e CV curves collected at different scan rates. f The b values were derived from the CV curves using the equation I = avb.