Solidification for solid-state lithium batteries with high energy density and long cycle life

Conventional lithium-ion batteries with inflammable organic liquid electrolytes are required to make a breakthrough regarding their bottlenecks of energy density and safety, as demanded by the ever-increasing development electric vehicles grids. In this context, solid-state lithium (SSLBs), which replace solid counterparts, have become popular research topic due excellent potential in realization improved safety. However, practice, SSLBs is limited cathode mass loading, electrolyte thickness anode stability. Moreover, crucial interfacial issues related rigid heterogeneous solid-solid contacts between electrodes, including inhomogeneous local distributions, sluggish ion transport, side reactions, space charge barriers stability degradation, severely deteriorate cycle life SSLBs. Solidification, converts into inside battery, represents powerful tool overcome aforementioned obstacles. The precursors fully wet interfaces infiltrate followed in-situ conformal solidification under certain conditions for all-in-one construction cells highly conducting, closely contacted sustainable electrode/electrolyte interfaces, thereby enabling high long life. Therefore, review, we address progress latest strategies toward layers electrodes electrolytes. critical challenges future directions proposed from both science engineering perspectives.