Fig. 2: Structural characterization of Fe,W-N-C catalyst.
From: Ten thousand hour stable zinc air batteries via Fe and W dual atom sites
a SEM image. b TEM image. c XRD patterns of Fe,W-N-C catalyst, FePc complex, and Pc complex. d Aberration-corrected HAADF-STEM image. e HAADF-STEM image and the corresponding STEM-EELS mapping (f) taken from the orange boxed area in (e). g The corresponding EELS spectrum of the 1 nm×1 nm selected small area in (f). h HAADF-STEM image and the corresponding EDX elemental mapping images for C (red), N (blue), W (yellow), and Fe (green).
