Fig. 1

Schematic illustration of synthetic method for SA Co-D 1T MoS2 and its characterization. a Schematic diagram of the fabrication process for SA Co-D 1T MoS2. b Aberration-corrected HAADF-STEM image of SA Co-D 1T MoS2, showing the obvious junction between SA Co-D 1T MoS2 (dark cyan) and pristine 2H MoS2 (wine). The inset shows the HRTEM and EELS spectrum of SA Co-D 1T MoS2 (scale bar: 1 nm). c Enlarged HAADF-STEM image in the red square area of b (scale bar: 2 Å). d Theoretical model and e simulated STEM images using QSTEM simulation software (scale bar: 2 Å). f FT-EXAFS spectra of SA Co-D 1T MoS2 and bulk cobalt foil at the Co K-edge. g Co K-edge XANES of SA Co-D 1T MoS2 and fitted curve. The inset shows the atomic structure of SA Co-D 1T MoS2