Fig. 5: Desalination mechanism of the V2O5/V2CO2p. | Nature Communications

Fig. 5: Desalination mechanism of the V2O5/V2CO2p.

From: Pushing the limit of layered transition metal oxides with heterolattice oxygen-mediated redox for capacitive deionization

Fig. 5: Desalination mechanism of the V2O5/V2CO2p.The alternative text for this image may have been generated using AI.

a First and second charge/discharge profiles and selected voltage states of V2O5/V2CO2p. b, c XRD patterns of V2O5/V2CO2p at different charge/discharge stages within 2θ ranges of 5° to 80° and 31° to 33°, in which the arrows show the shift of the Na4V2O7 peak during the charging and discharging processes. d 2D contour plots of the XRD patterns. HRTEM images of the V2O5/V2CO2p electrode after e the first charge to 0.8 V, f the first discharge to −0.4 V and g the second charge to 0.8 V, the inset on the right is enlarged area marked by the dash line. h Schematic of the working mechanism for the charge/discharge processes of V2O5/V2CO2p.

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