Fig. 1. a-c) The PDOS of V2C-MXene, N-V2C and Te-V2C (the inset depicted P band center of C 2p and d band center). d) The effects of the Te doping in promoting the structural stability of V2C-MXene. e) Schematic representation of the synthesis route for Te-V2C-450.
Fig. 2. a) The finite element simulation of the cooling time of the 3D model. b, c) SEM images of Te-V2C-450. d, e) TEM images of Te-V2C-450. f) HRTEM images of Te-V2C-450. g) SAED images of Te-V2C-450. h) EDS mapping of Te-V2C-450.
Fig. 3. a) SAC of Te-V2C-450 and counterparts. b) SAR of Te-V2C-450 and counterparts. c) Charge efficiency and energy consumption of Te-V2C-450 and counterparts at 1.4 V. d) SAC of Te-V2C-450 in single CDI charging-discharging cycle. e) ex-situ XRD spectra and f) contour graphs during the Na+ adsorption/desorption of Te-V2C-450. g) ex-situ V 3d XPS spectra during Na+ adsorption/desorption of Te-V2C-450. h) Comparison of the desalination performance of Te-V2C-450 with other reported works.
Fig. 4. a-c) The PDOS of Te-V2C-450 and counterparts. d) V 3d energy levels in Te-V2C-450 and counterparts. e) Adsorption energy of Te-V2C-450 and counterparts. f) Relative energies of Te-V2C-450 and counterparts. g) Bader charge and differential charge density map for Te-V2C-450.
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