where, 𝐷 is the diffusion coefficient R refers to the universal gas constant (8.314 J K -1 mol - 1 ), T is the temperature, A is the cross-sectional area of the electrode, n is the number of moles of Na-ion involved in the reaction, F is the faraday constant (96,500 C mol -1 ), σ is the slope of the curve, and C is the concentration of the electrolyte. The as-determined DNa + are in the order of magnitudes of 10 -13 and 10 -15 cm 2 s -1 as seen in S2 and S3. In addition, the DNa + exhibits a trend in which the PQD_PW_C shows higher magnitude followed by a decrement in its magnitude in the case of PQD_PW_B, while the PQD_PW_A exhibits an enhancement in its magnitude.