关键词: 锂电池;负极;水热/溶剂热法;碳气凝胶;氧化铁

Abstract: Nanostructure CA/Fe2O3 composite with different morphologies were synthesized by modification of Fe2O3 on CA via a simple hydrothermal/solvothermal method.The structure, morphology and Fe2O3 loading content in CA/Fe2O3 were characterized by XRD, SEM and TGA, and the electrochemical properties of these materials were also investigated by constant current charge/discharge tests.The results shows that Fe2O3 is uniformly dispersed on CA with a rugby-like and ball-like morphology by hydrothermal/solvothermal method, respectively.Electrochemical results indicate CA/Fe2O3 obtained by solvothermal method exhibit better cycling performance and rate capability as an anode material for LIBs, and the cyclability of CA/Fe2O3 is up to 634.9 mAh·g-1 at a current density of 100 mA·g-1 after 50 cycles with a large retention of 97.9; comparing with the first capacity.

Key words: Nanostructure CA/Fe2O3 composite with different morphologies were synthesized by modification of Fe2O3 on CA via a simple hydrothermal/solvothermal method.The structure, morphology and Fe2O3 loading content in CA/Fe2O3 were characterized by XRD, SEM and TGA, and the electrochemical properties of these materials were also investigated by constant current charge/discharge tests.The results shows that Fe2O3 is uniformly dispersed on CA with a rugby-like and ball-like morphology by hydrothermal/solvothermal method, respectively.Electrochemical results indicate CA/Fe2O3 obtained by solvothermal method exhibit better cycling performance and rate capability as an anode material for LIBs, and the cyclability of CA/Fe2O3 is up to 634.9 mAh·g-1 at a current density of 100 mA·g-1 after 50 cycles with a large retention of 97.9; comparing with the first capacity.