Surfactant assisted, one-step synthesis of Fe3O4 nanospheres and further modified Fe3O4/C with excellent lithium storage performance
Date of Original Version
Fe3O4 nanospheres are synthesized by a solvothermal method with only one step under the assistance of surfactant. Fe3O4/C nanospheres are further fabricated by modifying Fe3O4 nanospheres with glucose as carbon source. The crystalline structure and surface morphology are investigated by a combination of X-ray diffraction, Roman spectroscopy, transmission electron microscopy and scanning electron microscopy. The results suggest that cubic Fe3O4 nanospheres are achieved, with a diameter around 200 nm. After the coating process, uniform carbon layer ~5 nm is formed on the surface of Fe3O4 spheres. The electrochemical performances of prepared Fe3O4 and Fe3O4/C nanospheres as anode materials for lithium-ion batteries are conducted via galvanostatic discharge/charge measurements and cyclic voltammetry. Under a current density of 100 mA g−1, the Fe3O4/C nanospheres exhibit a delithiation capacity of 767.2 mAh g−1 over 100 cycles with excellent capacity retention of 98.2% and improved rate capacities, both of which are better than those of Fe3O4 nanospheres. This work demonstrates that the prepared Fe3O4/C nanospheres can be a promising anode material for lithium ion batteries.
Journal of Electroanalytical Chemistry
Pan, Yue, Weijia Zeng, Lin Li, Yuzi Zhang, Yingnan Dong, Ke Ye, Kui Cheng, Dianxue Cao, Guiling Wang, and Brett Lucht. "Surfactant assisted, one-step synthesis of Fe3O4 nanospheres and further modified Fe3O4/C with excellent lithium storage performance." Journal of Electroanalytical Chemistry 810, (2018): 248-254. doi:10.1016/j.jelechem.2018.01.025.