Progress and perspective of interface design in garnet electrolyte‐based all‐solid‐state batteries

Inorganic solid-state electrolytes (SSEs) are nonflammable alternatives to the commercial liquid-phase electrolytes. This enables use of lithium (Li) metal as an anode, providing high-energy density and improved stability by avoiding unwanted chemical reactions. Among different types SSEs, garnet-type witness a rapid development considered one top candidates pair with Li due their high ionic conductivity, thermal, electrochemical stability. However, large resistances at interface between cathode/anode major bottlenecks for delivering desirable performances all-solid-state batteries (SSBs). The electrolyte/anode also suffers from metallic dendrite formation, leading performance degradation. is fundamental material challenge poor contact wettability electrode materials. Here, we summarize analyze recent contributions in mitigating such materials challenges interface. Strategies used address these divided into categories regard working principles. On hand, progress has been made anode/garnet interface, successful application Li-alloy anode artificial interlayers, significantly improving interfacial performance. other desired cathode/garnet still hard reach complex physical structure cathode. common methods nanostructured cathode host sintering additives increasing area. basis this information, present our views on remaining future research electrode/garnet review not only motivates need further understanding fundamentals, stability, modifications garnet/electrode interfaces but provides guidelines design SSB.