Fig. 2From: Morphology controlled synthesis of 2-D Ni–Ni3S2 and Ni3S2 nanostructures on Ni foam towards oxygen evolution reaction a, b FE-SEM images of SW Ni–Ni3S2/NF, c TEM image, d HR-TEM image, and e corresponding EDS elemental mapping of nickel nanosheets scrapped down from the Ni foam. The arrows in b show the upright edges and existence of spider on web-like Ni nanosheetsBack to article page