Mineral Materials and Advanced Energy Materials > 5. Battery Materials and Waste Management
Abstract Accepted
登虎 位 / 聊城大学材料学院
Iron-based anode materials such as Fe2O3 and FeSe2 have attracted widespread attention for lithium-ion battery due to their high capacities and abundant reserves. However, the capacity decays seriously because of the poor conductivity and severe volume expansion, which greatly limits their practical application. Designing nanostructure and combined with carbon are effective means to improve cycling stability, because of that the incorporated carbon not only can act as a structural buffer to effectively alleviate the volume expansion, but also significantly improve the conductivity, and the nanostructure of the synthesized materials could afford space for lithium intercalation and extraction processes. In this work, ultra-small Fe2O3 nanoparticles loaded on carbon framework were synthesized through a one-step thermal decomposition of the commercial C15H21FeO6 [Iron (III) acetylacetonate], which could be served as the source of Fe, O, and C. As an anode material, the Fe2O3@C anode delivers a specific capacity of 747.8 mAh g-1 after 200 cycles at 200 mA g-1 and 577.8 mAh g-1 after 365 cycles at 500 mA g-1. What’s more, the synthetic strategy can be simply extended to prepare other iron-based anode material, FeSe2@C for instance also showing good cycling performance.