Table 2 Comparison of novel electrolyte systems for reversible Zn stripping/deposition.
Electrolyte systems | Advantages | Disadvantages | Ref. |
|---|---|---|---|
Concentrated aqueous electrolytes | High ionic conductivity, high safety | High cost in the case of organic zinc salts, water-induced side reactions | |
Aqueous electrolyte with additives | High ionic conductivity, low cost, high safety | Water-induced side reactions | |
Organic electrolytes | No side reactions | Flammability, large voltage hysteresis | |
Ionic liquids | No side reactions, good stability, high safety | High cost, high viscosity, low ionic conductivity | |
Deep eutectic solvents | Low cost, biodegradability | High viscosity, low ionic conductivity | |
Polymer-based electrolytes | No side reactions, flexibility leak-proof property | Low ionic conductivity, poor interfacial ion transport |
