Fig. 6: In-situ monitoring results for the pouch aqueous zinc-ion batteries (AZIBs) with electrolyte additives.
From: In-situ detection of pH and dissolved oxygen in electrolyte of aqueous zinc-ion batteries
a Time-resolved voltage of the pouch AZIB, IDS-pH and IDS-DO of the EGFET-pH & DO sensor and the real-time pH and dissolved oxygen (DO) concentration derived from galvanostatic charge-discharge (GCD) measurements of a pouch AZIB with an electrolyte of ammonium dihydrogen phosphate (NHP)/ZnSO4 at 2 C with a voltage window from 0.80 to 1.80 V. Corresponding pH and DO concentrations at specific time points are indicated by red dots. b Schematic illustrations of optimization mechanism of NHP in AZIB. Abbreviations: ammonium dihydrogen phosphate (NHP). c Time-resolved voltage of the pouch AZIB, IDS-pH and IDS-DO of the EGFET-pH & DO sensor and the real-time pH and DO concentration derived from GCD measurements of a pouch AZIB with an electrolyte of sodium anthraquinone-2-sulfonate (AQS)/ZnSO4 at 2 C with a voltage window from 0.80 to 1.80 V. Corresponding pH and dissolved oxygen concentrations at specific time points are indicated by red dots. d Schematic illustrations of optimization mechanism of AQS in AZIB. Abbreviations: zinc hydroxide sulfate (ZHS) and sodium anthraquinone-2-sulfonate (AQS).
