Evaporation-induced self-assembly synthesis of mesoporous FeCo2O4 octahedra with large and fast lithium storage properties

• Mesoporous FeCo2O4 octahedra are synthesized using EISA method for the first time.
• The FeCo2O4 octahedra are employed as anode materials with high-performance.
• Large, fast and stable lithium storages are achieved.
• FeCo2O4 delivers the capacity of 1101 mAh g−1 at 1 A g−1 after 200 cycles.

Exploration of mixed transition metal oxides with specific nanostuctures for high-performance lithium storages is an urgent but still challenging desire. Mesoporous FeCo2O4 octahedra are synthesized for the first time with evaporation-induced self-assembly method as advanced anode materials for lithium-ion batteries. Endowed with the combined benefits of multicomponent effect, octahedral structure stability, and mesoporous features, the sample delivers excellent electrochemical performance, including large, fast, and stable cyclic performance (1101 mAh g−1 at 1 A g−1 after 200 cycles), as well as the best high-rate performance ever reported for FeCo2O4 (518 mAh g−1 at 10 A g−1).

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