Recent advances in cathode engineering to enable reversible room-temperature aluminium-sulfur batteries.

The rigorous requirements, such as high abundance, cost-effectiveness, and increased storage capacities, pose severe challenges to the existing Li-ion batteries' long-term sustainability. Room-temperature aluminum-sulfur (Al-S) chemistry, in particular, is gaining importance due to its high theoretical energy density (1700 W h kg). Al-S battery technology is one of the emerging metal-sulfur candidates that can surpass current Li-ion chemistries.