Li2NaV2(PO4)3: A 3.7 V Lithium-Insertion Cathode with the Rhombohedral NASICON Structure

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

“…All the diffraction peaks of NVP-CNF were well matched to the reference pattern for NVP with the rhombohedral R-3c space group. 14,25 The crystal structure of NVP is depicted in Figure 1( (1) and Na (2) interstitial sites with six-and eight-fold coordination, respectively. 26 As reported by Weixin's group, the Na(2) sites are relatively weakly connected to surrounding oxygen atoms when compared with Na (1) sites.…”

Na3V2(PO4)3/C nanorods as advanced cathode material for sodium ion batteries

“…Recently, due to the highly covalent three dimensional framework that generates large interstitial spaces through which sodium ions may diffuse, NASICON type electrode materials have aroused much interest of many researchers [15]. Among them, Na 3 V 2 (PO 4 ) 3 with a NASICON structure has received extensive interest for its several advantages: 1) its theoretical discharge capacity is approximately 117.6 mAh g − 1 , with two Na ions being completely extracted up to 4.0 V vs Na + /Na.…”

Novel Rechargeable M3V2(PO4)3//Zinc (M = Li, Na) Hybrid Aqueous Batteries with Excellent Cycling Performance

“…The (PO 4 ) 3− polyanions facilitate to form a three dimensional pathway for Li + insertion /extraction with a very high Li ion diffusion coefficient (from 10 −9 to 10 −10 cm 2 /s). As cathodes of hybrid ion batteries, Li 2 NaV 2 (PO 4 ) 3 (LNVP) were also investigated in organic lithium ion electrolytes3738. These two phosphate salts, LVP and NVP, have obvious different insertion/extraction mechanisms in organic electrolyte, including the inserted/extracted lithium ion number per unit formula and plateaus voltages as well structure stability, but their behaviour in aqueous electrolyte seldom is evaluated.…”