Fig. 1: Sample preparation and morphology of the Ni(Cu)VOx electrode.
From: Implanting Ni-O-VOx sites into Cu-doped Ni for low-overpotential alkaline hydrogen evolution
a Schematic to prepare the Ni(Cu)VOx electrode for HER electrolysis. b High resolution SEM (scale bar: 100 nm). c, d HR-TEM (scale bar: 5 nm for c and 1 nm for d), and e–h TEM-EDS mapping images (scale bar: 25 nm).
