Mesoporous MFe2O4 (M = Mn, Co, and Ni) for anode materials of lithium-ion batteries: Synthesis and electrochemical properties

• MFe2O4 (M = Mn, Co, and Ni) are synthesized by a template-free hydrothermal method.
• The mesoporous morphology is formed by self-assembly of crystal nucleus.
• The mesporous MnFe2O4 have the active phase and the synergy for Li-ion storage.

The MFe2O4 (M = Mn, Co, and Ni) mesoporous spheres with an average diameter of 250 nm were synthesized through a template-free hydrothermal method. The mesoporous MnFe2O4 with a large surface area of 87.5 m2/g and an average pore size of 27.52 nm were obtained. As the anode materials for Li-ion batteries, the mesoporous MnFe2O4 exhibits excellent initial charge and discharge capacities of 1010 and 642.5 mA h/g. After 50 cycles, the discharge capacity could still remain at 379 mA h/g. The results showed that the active phase and the synergy between different metal oxides greatly improved the electrochemical performance, and the mesoporous composite could stabilize the structure of the electrodes.

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