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. Among the batteries tested, when commercial vaseline and butyl methyl imidazolium hexafluorophosphate were mixed with AlCl3·6H2O and used as the solid electrolyte, the prepared Al–air battery exhibited a stable high current and electrochemical property.