Progress and Challenges for All?Solid?State Sodium Batteries

All-solid-state sodium batteries (ASSBs) are regarded as the next generation of sustainable energy storage systems due to advantages abundant resources, and their exceptional high density. Nevertheless, there still grand challenges realize practical applications, such limited types solid-state electrolytes (SEs), low ionic conductivity SEs, charge-transfer impedance, interfacial issues, Na dendrite growth. Herein, recent progress various SEs for ASSBs summarized, including solid polymer electrolytes, inorganic (including oxides, sulfides, boron hydrides), combinations. Furthermore, reports on cathodes materials corresponding cathode/SE issues comprehensively reviewed. Current trends future perspectives metal anodes discussed in detail with an emphasis anode interface protection innovative good compatibility. Finally, opportunities development outlined.