Rational Design of Porous TiO2@N-Doped Carbon for High Rate Lithium-Ion Batteries

Considering the merits of natural biomass, a soybean is designed and applied as a green source for N-doped carbon to fabricate a TiO2@N-doped carbon (TiO2@NC) composite for lithium-ion batteries (LIBs). The TiO2 nanoparticles are uniformly anchored on the surface of porous N-doped carbon frameworks. As anode materials for LIBs, TiO2@NC exhibits excellent cycle performance and enhanced rate capacity. After 100 cycles at 1 C, the capacity can be maintained at 282.2 mAh g(-1). In addition, it can even deliver a large reversible capacity of 155 mAh g(-1) after 200 cycles at 5 C. These excellent results prove that the designed composite can be applied as a promising anode material for a lithium-ion storage system with improved electrochemical performances.