Supplementary Information
The specific capacitance (F g-1) and energy density values from the GCD graphs were calculated using the equation 7 and 8. 𝐶𝑠=2 × 𝐼×𝛥𝑡 𝑚×𝛥 (7) Energy density (Wh kg−1)= 1 8 𝐶𝑠∆ 2 1000 3600 (8) where, C s-= specific capacitance (F g 1), ΔV (V) is the maximum potential window, E is energy density and t d