Synthesis of a novel carbon network-supported Fe_3O_4@C composite and its applications in high-power lithium-ion batteries

摘要

A polymer carbonization route was designed to synthesis carbon network-supported Fe_3O_4@C composites. The Fe_3O_4 nanoparticles with an average of ～200 nm were uniformly wrapped up in this novel carbon network. As an anode material for rechargeable lithium-ion batteries, the Fe_3O_4@C composites present attractive properties with a high specific capacity of 730 mAh g~(-1) at 2 C after 300 cycles. The novel carbon network plays a key role in enhancing the electrochemical performance of the composites.