Nitrogen-doped molybdenum diselenide hollow architectures for Li-ion storage with superior performance

Abstract

The development of hollow molybdenum diselenide (MoSe2) with heteroatom doping will expose more active sites, leading to excellent Li-ion storage capability. Nitrogen-doped MoSe2 hollow architectures (N-MoSe2 HAs) were easily constructed utilizing a simple solvothermal route using formamide and water as mixed solvents. Structure and morphology analyses revealed that N-MoSe2 presents a hollow structure. The N-MoSe2 HAs with hierarchical pores can provide a specific surface area (SSA) of 11.6 m2 g−1. The N-MoSe2 HAs displayed remarkable Li storage performance as an anode material for Li-ion batteries (LIBs) because of their distinctive hollow structure and N-doping. It yielded a large initial discharge capacity of 1837.3 mAh g−1 at 100 mA g−1, outstanding rate capacity (1252.0 mAh g−1 at 1000 mA g−1), and robust cyclic durability (751.1 mAh g−1 after 180 cycles). The present work manifests fabricating MoSe2 hollow architectures with nitrogen doping could be an efficient strategy for boosting the Li-ion storage capability.