First exploration of Na-ion migration pathways in the NASICON structure Na3V2(PO4)3

Abstract

Ion occupation and migration pathways are investigated to explore the ion-migration mechanism of Na 3 V 2 (PO 4 ) 3 with the help of first principles calculations. Na 3 V 2 (PO 4 ) 3 with a NASICON framework generates high performances as a cathode material in sodium-ion batteries.

Facile solvothermal synthesis of NaTi2(PO4)3/C porous plates as electrode materials for high-performance sodium ion batteries

“…The results demonstrate that NTP/C P3 has the best ability of Na ions transmission among these samples. Meanwhile, the obtained D Naþ values are close to those of NaTi 2 (PO 4 ) 3 @C (2.32 Â 10 À10 cm 2 s À1 ) [51] and Na 3 V 2 (PO 4 ) 3 /C (1.06 Â 10 À11 cm 2 s À1 ) [52].…”

Na3V2(PO4)3 particles partly embedded in carbon nanofibers with superb kinetics for ultra-high power sodium ion batteries

“…Thus, the Na ions located in Na(2) sites are primarily involved in the electrochemical properties of NVP. 27 The stable and large Na(2) sites formed in the crystal structure of NVP suppress the stress/strain that occurs when Na ions are diffused into/out of NVP crystals. .…”

Improving the energy density of Na3V2(PO4)3-based positive electrodes through V/Al substitution

“…1) 10 the latter phase being isotypical with NaTi 2 (PO 4 ) 3 . As shown by Song et al, 19 galvanostatic extraction of Na + from pure Na 3 V 2 (PO 4 ) 3 up to 4.5 V vs. Na does not permit extraction of more than two Na + . These particular features offer the possibility of building symmetrical NVP/electrolyte/NVP batteries operating at 1.8 V, as recently demonstrated.…”