Fig. 2: Ion conductivity and electrochemical characteristics. | Microsystems & Nanoengineering

Fig. 2: Ion conductivity and electrochemical characteristics.

From: High-retention sodium supercapacitors with sodium hexametaphosphate-controlled water-processable/non-flammable sodium-ion solid-state electrolytes

Fig. 2: Ion conductivity and electrochemical characteristics.

a Nyquist plots of glass/ITO/GSP/PNaS/ITO/glass devices according to the SHMP molar ratio (0–40 mol%) (frequency sweep from 100 kHz to 100 mHz). b Ion conductivity (σ) of the PNaS SSEs as a function of SHMP molar ratio. c Cyclic voltammetry (CV) curves of the supercapacitors with the PNaS SSEs at a sweep rate of 1.0 V/s (arrows denote the direction of potential sweeps). d Maximum current density (JMAX) at the forward and backward sweeps from the CV curves in (c)

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