▎ 摘　　要

A binder-free three-dimensional porous interconnected graphene (a-3DrGO@NF) was centrifugally constructed and KOH-activated at 800 degrees C, leading a mechanically strong and pore-developed anode candidate for lithium ion batteries (LIBs). The unique approach of the integration of the mechanical construction and thermal activation demonstrated favorable frameworks to facilitate the stable and fast migrations of both ion and electron during the galvanostatic charge/discharge process, thus significantly improving its durability and electrochemical performance compared to those without the activated and thermal treatment. The a-3DrGO@NF LIBs showed a highly reversible capacity of 1250mAhg(-1) at a current density of 0.1Ag(-1) after 50cycles without degradation relative to the first cycle. More importantly, the a-3DrGO@NF LIBs exhibited excellent large current discharge property and cyclic stability of 965mAhg(-1) in its first cycle and 545mAhg(-1) after 150cycles at a current density of 4Ag(-1). Furthermore, it can be quickly charged and discharged in a very short time of 92s together with high-rate capability of 256mAhg(-1) after 200cycles at 10Ag(-1). At both lower and higher its current density as to 10Ag(-1), the coulombic efficiency was close to 100% and showed the reliability of a-3DrGO@NF LIBs.