Reactivating dead sodium for durable and high-rate anode-free sodium batteries (opens in new tab)

Reactivating dead alkali metal is an effective strategy for extending the lifespan of alkali metal batteries. Until now, relevant works are mainly concentrated in lithium batteries, however, the reactivation of dead Na remains a mystery. Herein, dead Na reactivation is realized by a reverse-pulse-interspersed charging strategy. Transient large reverse currents are incorporated into the battery charging protocol, during which dead Na can be reactivated by the dielectrophoresis effect. Differen...