Confirming reversible Al 3+ storage mechanism through intercalation of Al 3+ into V 2 O 5 nanowires in a rechargeable aluminum battery

As a new type of multi-electron transfer device, rechargeable aluminum batteries are promising post-lithium ion batteries owing to their high theoretical energy density. However, it is unknown whether Al3+ can be reversibly stored in the lattice of the host electrode material because of its small cation diameter and high valence state, thus trapping it tightly in lattice or defect sites. Here, we report the reversible storage of Al3+ in V2O5...