Scalable synthesis of few-layered MoS2/C sandwiched nanocomposites via ionic crystal (NH4)2MoS4 assisted ball-milling method and their enhanced high-rate lithium storage property

Ion crystal ammonium tetrathiomolybdateas (NH4)2MoS4 with the octahedral structure and high hardness could efficiently transfer and magnify the impacting and shearing force generated from ball-milling process to the surface of expandable graphite (EG) to accelerate its exfoliation and fragmentation. The obtained massive precursor comprised of nano-(NH4)2MoS4 and carbon nanosheets with few layers could transfer into MoS2/C sandwiched nanocomposites after subsequent calcination, which owns satisfied Li-storage performance even at relatively high current density.