Figure 7.
(a) TEM of the hierarchically porous Na3V2(PO4)3 materials and (b) ternary diagram of pore structure of porous NVP. (c) Rate capacities of the Na3V2(PO4)3 materials with different pore morphologies. Reproduced with permission from ref (91). Copyright 2021 Wiley-VCH. (d) Cycling performance of NVP@C@CNTs||NaPF6 in Diglyme||MCMB at 5 A g–1. Reproduced with permission from ref (92). Copyright 2022 Wiley-VCH.