Self-sacrificed synthesis of three-dimensional Na3V2(PO4)3 nanofiber network for high-rate sodium–ion full batteries

Chemical Synthesis of 3D Graphene‐Like Cages for Sodium‐Ion Batteries Applications

“…Among these, sodium (Na) super ion conductor (NASICON) structured Na 3 V 2 (PO 4 ) 3 (NVP) is a good candidate cathode material due to its excellent structural stability, good thermal stability, and high energy density. [35][36][37] Zhou et al reported template-assisted synthesis of nanostructured NVP 3D foams, which exhibit a capacity of 73 mA h g −1 at a rate of 100 C. [35] An et al prepared NVP/C nanoflakes with high rate capability and excellent cycling stability. However, similar to other polyanion compounds (i.e., Li 3 V 2 (PO 4 ) 3 and K 3 V 2 (PO 4 ) 3 ), [33,34] NVP suffers from intrinsically inferior electronic conductivity (about 10 −9 S cm −1 ).…”

“…[35][36][37] Zhou et al reported template-assisted synthesis of nanostructured NVP 3D foams, which exhibit a capacity of 73 mA h g −1 at a rate of 100 C. [35] An et al prepared NVP/C nanoflakes with high rate capability and excellent cycling stability. First, nanostructured NVP has been demonstrated to improve the sodium ion diffusion kinetics due to the reduced ion diffusion distance.…”

Nanostructured layered vanadium oxide as cathode for high-performance sodium-ion batteries: a perspective

“…In terms of the controllable synthesis of vanadium oxide cathode for SIBs, nanoscience engineering makes it possible to control the morphology and composition of cathode to effectively enhance the electrochemical performance. Recently, numerous reported method can be applied to obtain diverse nanostructures (i.e., hollow structure, [33] hierarchical heterostructures, [18,19,60] complex 3D architectures, [62] etc.) with peculiar electrochemical properties, interlayer spaces and morphologies.…”

“…9(d) and 9(e)]. [62] It is clear that the (211) and (300) peaks shift to higher angles during charge process, indicating that the d-spacings decrease during the Na + ions de-insertion. After recharging to 3.9 V, the peaks return to the original positions, indicating the good reversibility.…”

“…For this purpose, Mai and co-workers introduced a novel 3D NVP nanofiber network controllably constructed via a facile self-sacrificed template method. [62] The as-synthesized material displays excellent cyclability (95.9% capacity retention over 1000 cycles at 10 C) and enhanced high-rate performance (94 mA h/g at 100 C) for Na halfcell. Notably, when evaluated as full battery [NaTi 2 (PO 4 ) 3 as anode] cathode, it also shows outstanding cycling stability (96.9% capacity retention over 300 cycles at 5 C) and superior rate capability (80 mA h/g at 50 C).…”