All solid state rechargeable aluminum-air battery with deep eutectic solvent based electrolyte and suppression of byproducts formation.

In order to create a rechargeable aluminum (Al)-air battery, an aluminum-air battery with a deep eutectic solvent-based solid electrolyte was prepared. The prepared battery demonstrated a capacity smaller than the theoretical value although we observed stable electrochemical reactions. When TiN was used as an air cathode material, byproducts of the aluminum-air battery such as Al(OH) and AlO were not detected on either the Al anode nor the air cathode.

Semi-solid-state aluminium-air batteries with electrolytes composed of aluminium chloride hydroxide with various hydrophobic additives.

Semi-solid-state Al-air batteries with solid electrolytes prepared by mixing AlCl3·6H2O and various hydrophobic additives were prepared and tested. All of the prepared Al-air batteries exhibited higher current 48 hours after battery preparation. This might be due to a decrease in battery resistance as AlCl3·6H2O melted and penetrated into the air cathode as a result of its hygroscopic property.