Fig. 6

The structural evolution and electrochemical performances of MoS₂@CNFIG anode. a SEM image of MoS₂@CNFIG anode after being cycled 1000 times (scale bar = 50 μm) and b corresponding EDX elemental mappings of C, Na, Mo, and S; c twelve LEDs can be lit up by three coin cells connected in series based on the as-prepared MoS₂@CNFIG anodes; d long-term cycling performance of MoS₂@CNFIG at 1 and 10 A g⁻¹; e EIS spectra of MoS₂@CNFIG hybrid after being cycled two and 1000 times; f TEM image of the MoS₂@CNFIG hybrid cycled 1000 times (scale bar = 50 nm; Scale bar for inset in f, 2 nm); g schematic illustration of the tight contact between MoS₂ nanoflakes and the carbon shells, as well as the good porous space provided by the MoS₂@CNFIG hybrid for the volume expansion of MoS₂ nanoflakes