Na3.4Zr1.8Mg0.2Si2PO12 filled poly(ethylene oxide)/Na(CF3SO2)2N as flexible composite polymer electrolyte for solid-state sodium batteries

Nonaqueous Sodium‐Ion Full Cells: Status, Strategies, and Prospects

“…A classic example is the composite electrolyte obtained by filling the inorganic electrolyte Na 3.4 Zr 1.8 Mg 0.2 Si 2 PO 12 into the PEO‐based polymer electrolyte, which can work normally at 80 °C and exhibit excellent cycle stability and rate capability. The excellent electrochemical performance can be attributed to the good stability of composite electrolyte and the close interface contact between electrolyte and electrode . With the spring breeze of solid‐state LIBs, surface roughening, asymmetric or gradient structural design may be good choices to solve the interfacial issues of ASSIFCs in the near future.…”

Advanced Na metal anodes

“…In addition, the interfacial stability of solid electrolytes, especially contacted with the highly reductive Na metal, seems to be a more crucial problem for the application of solid batteries. In fact, the high ionic conductivity electrolytes, NASICON and sulfides, were all found instable with Na metal [97,98] . Recently, a thin polymer layer was introduced between the Na metal and NA-SICON solid electrolyte in Fig.…”

Mg2+/F− Synergy to Enhance the Ionic Conductivity of Na3Zr2Si2PO12 Solid Electrolyte for Solid‐State Sodium Batteries

“…synthesized Ce 4+ , Gd 3+ and Yb 3+ ‐doped NZSP by solid‐state reaction, and the highest ionic conductivity of 9.0×10 −4 S cm −1 is reached for Na 3 Zr 1.9 Ce 0.1 Si 2 PO 12 at room temperature . Other ions such as La 3+ , Sc 4+ , Mg 2+ and Ge 4+ also have been doped in NZSP solid electrolyte, and high ionic conductivities up to 10 −3 S cm −1 are achieved at room temperature . Moreover, a small amount of conductive phase, such as Na 3 PO 4 and Na 3 La(PO 4 ) 2 , can also facilitate the improvement of the ionic conductivity .…”