Solid electrolytes are renowned for their nonflammable, dendrite-blocking qualities, which also exhibit stability over large potential windows. NASICON-type Na1+xZr2SixP3-xO12 (NZSP) is a well-known solid electrolyte material sodium metal batteries owing to its elevated room temperature sodium-ion (Na+) conductivity and good electrochemical stability. Nevertheless, the strong electrode–electrol...

Abstract Rechargeable sodium metal batteries (SMBs) have emerged as promising alternatives to commercial Li‐ion because of the natural abundance and low cost resources. However, overuse metallic in conventional SMBs limits their energy densities leads severe safety concerns. Herein, we propose a sodium‐free‐anode SMB (SFA‐SMB) configuration consisting sodium‐rich Na superionic conductor‐structu...

While sulfide solid electrolytes such as Na11Sn2PS12 can allow fast transport of Na+ ions, their utilization in sodium ion batteries is rather unsuccessful since they are not electrochemically compatible to both high-voltage cathodes and metal anode. In this work, we devise an effective approach toward realizing batteries, using the electrolyte slurry-coated NASICON-type Na3MnTi(PO4)3@C cathode...

Sodium-ion batteries (SIBs) have demonstrated noticeable development since the 2010s, being complementary to lithium-ion technology in predominantly large-scale application niches. The projected SIB market growth will inevitably lead generation of tons spent cells, posing a notorious issue for proper battery lifecycle management, which requires both establishment regulatory framework and techno...

The Na superionic conductor (NASICON) Na3V2(PO4)3 is an important positive electrode material for Na-ion batteries. Here, we investigate the mechanisms of phase transition in NaxV2(PO4)3 (1 ? x 4) upon nonequilibrium battery cycling. Unlike widely believed two-phase reaction a Na3V2(PO4)3–Na1V2(PO4)3 system, determine, first time, structure recently reported intermediate Na2V2(PO4)3 using opera...

Solvent-free all-solid-state supercapacitors have recently received attention. Despite their highly specific capacitance, they suffer issues related to the solid–solid interface that degrade performance during prolonged cycling. Here, we propose a novel strategy for improving electrode–electrolyte by introducing small amount of polymer into activated carbon-based electrode. An electrode composi...

Hydrothermal investigations in the high silica region of the Na20-Y 203-Si60 15 system, carried out in a search for novel fast-ion conductors (FIC's), yielded the new compound trisodium yttrium hexasilicate, Na3 YSi60 15 • Single-crystal X-ray methods revealed that Na3 YSi60 15 crystallizes in space group Ibmm, has lattice constants a = 10.468 (2), b = 15.2467 (13) and c = 8.3855 (6) A, Z = 4, ...

Vanadium multiredox-based NASICON-NazV2?yMy(PO4)3 (3 ? z 4; M = Al3+, Cr3+, and Mn2+) cathodes are particularly attractive for Na-ion battery applications due to their high Na insertion voltage (>3.5 V vs Na+/Na0), reversible storage capacity (?150 mA h g?1), rate performance. However, practical application is hindered by rapid fade bulk structural rearrangements at potentials involving complex...

Sodium is a promising candidate for stationary storage applications, especially when the demand lithium-ion batteries increases due to electromobility applications. Even though its energy density lower, Na-ion technology estimated lead cost reduction of 30% compared Li-ion technology. To improve safety as well density, Na-based all-solid-state-batteries featuring solid electrolytes such beta-al...