Fig. 3: The role of DMSO in aqueous electrolytes, characterizations of the organohydrogel electrolyte and electrochemical performance of the Co SA-NDGs-based quasi-sold-state ZABs. | Nature Communications

Fig. 3: The role of DMSO in aqueous electrolytes, characterizations of the organohydrogel electrolyte and electrochemical performance of the Co SA-NDGs-based quasi-sold-state ZABs.

From: Quasi-solid-state Zn-air batteries with an atomically dispersed cobalt electrocatalyst and organohydrogel electrolyte

Fig. 3

a Zn2+ solvation structure and formed H-bond between DMSO and H2O molecules. The gray circles correspond to the solvation sheath structure of Zn2+. In situ optical visualization observation of the Zn|electrolyte interface during different operating conditions (charging/discharging cycle time of 10 min): b charging/discharging at 5 mA cm−2 in 6 M KOH + 0.2 M Zn(Ac)2; c charging/discharging at 5 mA cm−2 in 6 M KOH + 2 M DMSO + 0.2 M Zn(Ac)2. d SEM image of the freeze-dried PAM organohydrogel electrolyte. Inset shows the corresponding optical photograph of PAM organohydrogel. e Ionic conductivity for PAM organohydrogel electrolyte at various operating temperatures. f Cycling performance of the symmetric Zn | |Zn cells employing PAM hydrogel electrolyte and PAM organohydrogel electrolyte at 2 mA cm−2. g Charging/discharging performance of quasi-solid-state ZABs with Co SA-NDGs at 50 and 100 mA cm−2.

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