Rational design of intertwined carbon nanotubes threaded porous CoP@carbon nanocubes as anode with superior lithium storage

摘要: Abstract A novel 3D porous CoP@C-CNTs composite with CNTs threaded CoP@C nanocubes is rationally designed and demonstrated as a promising anode for lithium-ion battery. The displays high surface area abundant pores resulted from the pyrolysis of metal-organic frameworks (MOFs). CoP nanoparticles are well encapsulated in MOFs-derived carbon nanocubes, which can effectively accommodate volume change active during charge/discharge processes. Besides, N/P co-doped feature induced in-situ synthesis process helps to improve electrical conductivity. Moreover, presence intertwined network vital part rapid electron transportation within whole electrode. As result, electrode exhibits initial discharge capacity 1254 mAh g−1 at current density 0.1 A g−1, an outstanding rate performance (532 mAh densities 5 A g−1), excellent cycling stability fade ∼0.02% per cycle over 500 cycles 2 A g−1.