Mn_3O_4 nanocrystals anchored on multi-walled carbon nanotubes as high-performance anode materials for lithium-ion batteries

摘要

Mn_3O_4 nanocomposite with multi-walled carbon nanotubes (MWCNTs) has been successfully fabricated via a simple solvothermal route assisted by sodium acetate. Mn_3O_4 nanocrystals are uniformly anchored on MWCNTs. As anode material for lithium-ion batteries, the nanocomposite exhibits excellent cycling stability and rate capability. It delivers an initial reversible capacity of 1380 mAhg~(-1) at a current density of 100 mAg~(-1) and retains the capacity to 592 mAh g~(-1) after 50 cycles. Even at 1000 mA g~(-1), the capacity is still 387 mAh g~(-1) after 35 cycles. The superior performance is ascribed to the unique architecture with short diffusion length for lithium ions and effective conductive network for electron transport.