Superior electrochemical properties of MoS2 powders with a MoS2@void@MoS2 configuration†
Abstract
Yolk–shell MoS2 powders with a distinct configuration of MoS2@void@MoS2 were prepared for the first time by applying spray pyrolysis. The yolk–shell MoO3 powders prepared by spray pyrolysis were converted into MoS2 powders by a simple sulfidation process at 400 °C without altering the morphology. Dense structured MoS2 powders were also prepared by a similar process. The respective initial discharge capacities of the yolk–shell and dense structured MoS2 powders at a current density of 1000 mA g−1 were 651 and 490 mA h g−1, and the corresponding capacity retentions after 100 cycles measured from the second cycle were 100 and 72%.