Magnetite/carbon core-shell nanorods as anode materials for lithium-ion batteries
- Citation data:
Electrochemistry Communications, ISSN: 1388-2481, Vol: 10, Issue: 12, Page: 1879-1882
- Publication Year:
- Chemistry; Magnetite; carbon; core; shell; nanorods; anode; materials; for; lithium; ion; batteries; Engineering
Carbon coated magnetite (Fe 3 O 4 ) core-shell nanorods were synthesized by a hydrothermal method using Fe 2 O 3 nanorods as the precursor. Transmission electron spectroscopy (TEM) and high resolution TEM (HRTEM) analysis indicated that a carbon layer was coated on the surfaces of the individual Fe 3 O 4 nanorods. The electrochemical properties of Fe 3 O 4 /carbon nanorods as anodes in lithium-ion cells were evaluated by cyclic voltammetry, ac impedance spectroscopy, and galvanostatic charge/discharge techniques. The as-prepared Fe 3 O 4 /C core-shell nanorods show an initial lithium storage capacity of 1120 mAh/g and a reversible capacity of 394 mAh/g after 100 cycles, demonstrating better performance than that of the commercial graphite anode material.