Simple and Efficient Combustion Method for Preparation of High-Performance Co3O4 Anode Materials for Lithium-Ion Batteries

The development of low-cost, simple, and efficient methods to prepare high-performance anode materials is a huge challenge. In this work, Co 3 O 4 with high crystallinity was prepared by a solution combustion method. When used as an anode electrode, it displayed excellent electrochemical performance. The reversible capacity remained at 1115.7 mAh g −1 after 100 cycles at 200 mA g −1 . Moreover, the capacity retention rate reached 96.3% after 300 cycles at 1000 mA g −1 . This excellent electrochemical performance can be attributed to the special macroporous structure of Co 3 O 4 , which can increase the contact area between the electrolyte and active material, improve the transport capacity of lithium ions, and effectively alleviate the volume change stress caused by charging and discharging. These results show that the solution combustion synthesis is simple and efficient, providing a low-cost production method for production of high-performance energy storage materials.