Ni12P5 Nanoparticles Hinged by Carbon Nanotubes as 3D Mesoporous Anodes for Lithium-Ion Batteries

摘要

A unique 3D mesoporous interconnected Ni12P5/CNTs hybrid was constructed by a facile one-step hydrothermal method and investigated as anode toward lithium-ion batteries. The results show that Ni12P5 nanoparticles are well hinged by the flexible CNTs, forming a hierarchically integrated structure. The system delivers an initial discharge capacity of 1108 mAhg(-1) and a high reversible discharge capacity of 676 mAhg(-1) after 120 cycles at 200 mAg(-1). Furthermore, the hybrid also achieved long-term cycling stability and good rate capability, such as 584 mAhg(-1) at a current density of 400 mAg(-1) after 240 cycles and 245 mAhg(-1) at a rate current density of 3200 mAg(-1). The enhanced electrochemical performance could be attributed to the synergistic effect of increased specific surface area, mesoporous structures, and 3D interconnected conductive network