Fig. 3: STEM and EELS characterizations of the DVL-Cu catalyst.
From: Electrochemical CO2 reduction to ethylene by ultrathin CuO nanoplate arrays
a STEM BF image (left) of DVL-Cu and FFT patterns (right) of the corresponding area in the BF image. b Enlarged image of area #1 in (a). c EELS spectra acquired from areas #1 and #2 in (a). Standard Cu, Cu+ and Cu2+ EELS results are plotted as references. d STEM high-angle annular dark-field (HAADF) image and EELS maps of Cu and Cu2O and their overlay in DVL-Cu. The dashed lines highlighted in the overlay denote the Cu/Cu2O interfaces.
