Advanced ferroferric oxide-based composites for lithium-ion battery: Recent developments and future perspectives

Lithium-ion batteries (LIBs) possess remarkable advantages in terms of abundant reserves, high theoretical capacity, and low cost. However, the current graphite anodes fail to meet the daily requirements of individuals. The study of novel high-energy storage LIBs anode materials is increasingly imperative. Ferroferric oxide (Fe3O4) anode material is listed as a research object due to its exceptional theoretical specific capacity, cost-effectiveness, sufficient resources, and simple preparation process. However, the low conductivity and volume expansion issues limit its long-term development and widespread application. Recently, extensive research has been reported on Fe3O4 composite electrode materials with diverse structures, achieving significant achievements. This review summarizes the latest progress in high-performance Fe3O4 composites based on recent research. Herein, Fe3O4 composite anode materials based on dimensions is categorized and the structure-property relationship with different dimensions is covered. This work will motivate the preparation of Fe3O4-based composites electrodes with high electrochemical performance for lithium-ion batteries, aims to promote the commercial application of rechargeable lithium-ion energy storages.