Fig. 3: Sodiophilic nature and Na-ion deposition behavior of s-2D mPG heterostructures by DFT calculation and FVM simulation. | Nature Communications

Fig. 3: Sodiophilic nature and Na-ion deposition behavior of s-2D mPG heterostructures by DFT calculation and FVM simulation.

From: Achieving stable Na metal cycling via polydopamine/multilayer graphene coating of a polypropylene separator

Fig. 3: Sodiophilic nature and Na-ion deposition behavior of s-2D mPG heterostructures by DFT calculation and FVM simulation.The alternative text for this image may have been generated using AI.

a The deformation charge density of polydopamine molecule with Na. b The deformation charge density of graphene with Na. c Binding energies of Na with Cu, PP, graphene, and different functional groups in polydopamine. d Model diagram of Na ions through mPG layer (Inset: the color represents different concentration of Na ions). e The relative concentration of Na ions beneath different mPG layer with same amplitude and period of Na-ion distribution at the entrance. f, g Standard deviation of Na-ion concentration beneath mPG-7, mPG-12, and mPG-22 layers with (f) same amplitude and (g) same fluctuation of Na-ion distribution at the entrance.

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