Figure 1
(a) Schematic illustration of the synthesis of flexible 3D-networked NiCo2S4 NSA/carbon cloth through hydrothermal reaction and subsequent sulfurization treatment. (b–d) SEM images of the NiCo2S4 NSA/carbon cloth obtained at different magnifications; the inset in b shows an SEM image of NiCo2S4 NSA/carbon cloth at low magnification. (e) XRD spectrum of NiCo2S4 nanosheets scratched from carbon cloth (i) and standard pattern from JCPDS card (No. 20-0782) (ii). NSA, nanosheet array; SEM, scanning electron microcopy; XRD, X-ray diffraction; 3D, three-dimensional.
