Polypyrrole-assisted synthesis of roselike MoS<inf>2</inf>/nitrogen-containing carbon/graphene hybrids and their robust lithium storage performances

Release time:2021-03-15 Hits:

Key Words:C/G hybrids can be ascribed to the boosted electronic conductivity arising from the nove

Abstract:Roselike MoS<inf>2</inf>/nitrogen-containing carbon/graphene (MoS<inf>2</inf>/NC/G) hybrids were successfully synthesized via a facile polypyrrole (PPy)-assisted hydrothermal approach in combination with high-temperature calcination. The obtained MoS<inf>2</inf>/NC/G hybrids manifest roselike MoS<inf>2</inf> composed of nanosheets coupled uniformly on NC/G nanosheets due to the strong interactions between MoS<inf>2</inf> and the abundant nitrogen-containing functional groups of NC. When used as anode materials for lithium ion batteries, the MoS<inf>2</inf>/NC/G hybrids exhibit enhanced electrochemical energy storage performances compared to the bare MoS<inf>2</inf> nanosheets, including high specific capacity (1570.6 mA h g^-1 at 0.1 A g^-1), excellent rate capability (704.8 mA h g^-1 at 5 A g^-1) and good cycling stability (96.4% capacity retention after 100 cycles at 0.2 A g^-1). The enhanced lithium storage properties of the MoS<inf>2</inf>/NC/G hybrids can be ascribed to the boosted electronic conductivity arising from the novel hybrid nanostructures of MoS<inf>2</inf>/NC/G. © The Royal Society of Chemistry 2015.

Volume:5

Issue:77

Translation or Not:no