These challenges encompass the intricate Al 3+ intercalation process and the problem of anode corrosion, particularly in aqueous electrolytes. This review aims to explore various aluminum battery technologies, with a primary focus on Al-ion and Al‑sulfur batteries.
To meet these demands, it is essential to pave the path toward post lithium-ion batteries. Aluminum-ion batteries (AIBs), which are considered as potential candidates for the next generation batteries, have gained much attention due to their low cost, safety, low dendrite formation, and long cycle life.
Aluminum batteries are considered compelling electrochemical energy storage systems because of the natural abundance of aluminum, the high charge storage capacity of aluminum of 2980 mA h g−1/8046 mA h cm−3, and the sufficiently low redox potential of Al3+/Al. Several electrochemical storage technologies based on aluminum have been proposed so far.
A rechargeable battery based on aluminium chemistry is envisioned to be a low cost energy storage platform, considering that aluminium is the most abundant metal in the Earth's crust.
For significantly increasing the energy densities to satisfy the growing demands, new battery materials and electrochemical chemistry beyond conventional rocking-chair based Li-ion batteries should be developed urgently.
Aluminum battery systems are considered as a system that could supplement current lithium batteries due to the low cost and high volumetric capacity of aluminum metal, and the high safety of the whole battery system.