Fig. 2: Surface morphology and elementary distribution of nano-molybdenum disulfide loading in graphene.

a BSE image from SEM before cross-linked sulfur loading. b Inlens image from SEM. c STEM-EDS image (scale bar: 200 nm) after cross-linked sulfur loading (scale bar: 50 nm) and d HRTEM image (scale bar:100 nm) before cross-linked sulfur loading.