Facile synthesis and electrochemical performances of activated bamboo charcoal supported MoS2 nanoflakes as anodes materials for lithium-ion batteries

摘要

Bamboo charcoal (BC) has a natural hierarchical porous three-dimensional network structure and good electrical conductivity. Herein, MoS2 nanoflakes supported by modified bamboo charcoal (MBC) have been prepared via a facile hydrothermal method using ammonium molybdate. SEM observations show that appropriate MoS2 nanoflakes are uniformly dispersed on the porous MBC. In addition, the hybrids exhibit good lithium storage property as anode materials for lithium ion batteries. The optimal MoS2/MBC (MS-2) composite delivers a high initial capacity of 1867 mAh g(-1) at the current density of 200 mA g(-1), along with a stable reversible capacity of 672 mAh g(-1) during 200 cycles and the impressive high-rate capacity of 581 mAh g(-1) even at a higher current density of 1600 mA g(-1). The superior electrochemical performances of MoS2/MBC composites can be attributed to the synergistic effects between MoS2 nanosheets and the hierarchical porous structure of MBC, which buffers the volume change of materials, enhances the conductivity of composites and transmission of electrolyte.