A simple fabrication for nanoscale SnO2-Fe2O3-C lithium-ion battery anode material with tubular network structure

A ternary composite SnO 2 -Fe 2 O 3 -C was constructed using hydrothermal and ball milling methods. The uniform anchoring of SnO 2 and Fe 2 O 3 nano-particles on carbon nano-tubes through high-speed spherical grinding effectively limits the reunion of Sn in the circulation, while carbon nano-tubes provide more channels for Li + transport. After 200 cycles, the SnO 2 -Fe 2 O 3 -C delivers a high reversible capacity of 1,037 mA h g −1 at 0.2 A g −1 . Furthermore, long-term cycling stability with a capacity of 1054.6 mA h g −1 after 700 cycles at 1.0 A g −1 . TEM contrast before and after the 500 cycles reveal that the SnO 2 -Fe 2 O 3 -C retain the original structure, demonstrating the excellent cycling property and rate capability properties and structural stability of the material.