Fig. 2: Preparation and characterization of PVDF-Sn@Zn gradient electrode.
From: Gradient design of imprinted anode for stable Zn-ion batteries

a Schematic illustration of the fabrication of PVDF-Sn@Zn gradient electrode and its induced Zn deposition. SEM images of b SSM, c Sn@Zn, d imprinted Sn@Zn, and e, f PVDF-Sn@Zn gradient electrodes. g–i The corresponding EDS mappings of f. j–m Cross-sectional SEM and the corresponding EDS mapping of PVDF-Sn@Zn gradient electrode. Scale bar, 30 μm for b–e, 60 μm for f-i, and 5 μm for j–m.