Abstract: The transition metal oxide Fe₂O₃， as an anode material for lithium-ion batteries， exhibits advantages such as high theoretical specific capacity （1 007 mAh/g）， abundant reserves， and environmental friendliness. However， in practical applications， its performance is limited by low conductivity and significant volume expansion during cycling. Introducing a carbon matrix and nanostructuring are effective strategies to address these issues. The bamboo leaf carbon offers advantages of low cost and high yield. As a carbon matrix， it enhances the conductivity of the composite and buffers the volume expansion of the anode active material. In this study， bamboo leaves were used as a carbon source to prepare carbon materials. Nano-Fe₂O₃ was synthesized by hydrothermal method， and finally， a solvothermal method was employed to combine bamboo leaf-derived carbon with nano-Fe₂O₃， producing a nano-Fe₂O₃/bamboo leaf carbon composite anode material. Electrochemical tests reveal that the nano-Fe₂O₃/bamboo leaf carbon composite maintains a high specific capacity of 704.6 mAh/g after 203 cycles at a current density of 200 mA/g， while delivering a specific capacity of 472 mAh/g at a higher current density of 500 mA/g. The incorporation of bamboo leaf carbon improves the diffusion kinetics of lithium-ion insertion/extraction in the electrode material， and also increases the contribution of pseudocapacitive behavior to the capacity. This study provides a novel approach for utilizing biomass-derived carbon to enhance the reversible capacity and cycling stability of lithium-ion battery anode materials.

Key words: Fe₂O₃; bamboo leaf carbon; Li-ion battery; anode; reversible capacity; cycling stability