Key challenges and advancements toward fast-charging all-solid-state lithium batteries

Next-generation energy storage systems rely heavily on the capability of fast charging as they allow electronic devices to be charged within a remarkably brief period. The practical applications of fast-charging technology are severely hindered by unsatisfactory electrochemical performance, e.g., low specific capacity, low areal capacity, low coulombic efficiency, and very limited life span, resulting in a fast-discharging process. This comprehensive review provides a concise overview of the obstacles faced and thereby the recent advancements made in the realm of fast-charging all-solid-state lithium batteries. Firstly, it explains the inherent challenges of solid-state electrolytes (SSEs) and conventional ASSLB design that impede fast-charging capabilities. Based on these challenges, the specifications and strategies for optimizing the SSEs, electrodes, and electrode/SSE interfaces are discussed to achieve the fast-charging phenomenon in ASSLBs. To give readers a better understanding of ASSLBs under fast-charging capabilities, a comprehensive conclusion and novel points of view are included in the prospects.