Recent advances in the interface design of solid-state electrolytes for solid-state energy storage devices

Abstract

High-ionic-conductivity solid-state electrolytes (SSEs) have been extensively explored for electrochemical energy storage technologies because these materials can enhance the safety of solid-state energy storage devices (SSESDs).

Electrolyte/Electrode Interfaces in All-Solid-State Lithium Batteries: A Review

“…Reprinted with permission from Ref. [ (5,10,15) μm particle diameters and respective electron connected particles (yellow) and electron unconnected particles (red). Reprinted with permission from Ref.…”

“…Because of this, a comprehensive review is needed to understand current investigations into electrolyte/electrode interfaces in ASSLBs. And although many systematic reviews have already been published on this topic [14,15], in-depth insights into physical and chemical interactions between electrolytes and electrodes remain lacking. To address this, this review will classify the current issues of electrolyte/electrode interfaces in ASSLBs into three categories, including poor contact, sluggish charge transfer and Li dendrite formation and focus mainly on the fundamental mechanisms of these issues (Fig.…”

Current Trends in Nanoscale Interfacial Electrode Engineering for Sulfide‐Based All‐Solid‐State Li‐Ion Batteries

“…The two important roles of SSEs to have over conventional Li‐ion batteries are: 1) separating positive and negative electrodes to prevent internal short circuit and 2) providing a channel for ion transmission between electrodes during charge–discharge processes. [ 36 ] Crystalline solid materials generally consist of a coordination polyhedral and a spatial arrangement of mobile species. [ 37 ] This coordination polyhedron constructs a framework, providing many vacancies distributed among the framework.…”

Electrolytes for Lithium‐ and Sodium‐Metal Batteries

“…For instance, the ionic conductivity of some sulfide-based solid electrolytes can even be comparable to that of liquid electrolytes, but there is still a gap in the electrochemical performance between solid-state lithium batteries and liquid LMBs, which shows that in addition to the development of high-performance electrode materials and solid electrolytes, how to effectively regulate the interface structure of solid electrolytes and electrodes is the key to improving the capacity and energy density of solid LIBs. [29,30] Generally, solid-state electrolytes can be divided into inorganic solid electrolytes and solid polymer electrolytes. Although the inorganic solid electrolyte has the advantages of high room temperature ionic conductivity and wide electrochemical window, its brittleness is large and its processing performance is extremely poor, resulting in a large solid/solid interface resistance of the assembled solid battery, showing low charge-discharge cycle performance.…”

“…So far, the ionic conductivity of solid electrolytes developed by researchers has made great progress. For instance, the ionic conductivity of some sulfide‐based solid electrolytes can even be comparable to that of liquid electrolytes, but there is still a gap in the electrochemical performance between solid‐state lithium batteries and liquid LMBs, which shows that in addition to the development of high‐performance electrode materials and solid electrolytes, how to effectively regulate the interface structure of solid electrolytes and electrodes is the key to improving the capacity and energy density of solid LIBs [29,30] . Generally, solid‐state electrolytes can be divided into inorganic solid electrolytes and solid polymer electrolytes.…”