Calcination - Assisted Hydrothermal Synthesis and Electrochemical Performance of Fe3O4/HSFC Nanocomposites as Li-ion Batteries Anodes

• Published in: International journal of electrochemical science Vol. 12; no. 11; pp. 10421 - 10432
• Main Authors: Mo, Zilin, Sun, Jianwu, Qin, Aimiao, Chen, Shuoping, Liao, Lei, Du, Rui, Zhang, Kaiyou
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2017
• Subjects: calcination; electrochemical performance; Fe3O4 nanoparticles; hydrothermal treatment; sisal fiber carbon; calcination; hydrothermal treatment; sisal fiber carbon; Fe3O4 nanoparticles; electrochemical performance
• ISSN: 1452-3981; 1452-3981
• DOI: 10.20964/2017.11.52

Hydrothermal sisal fiber carbon (HSFC) was synthesized by a two-step hydrothermal modification with sisal fiber as raw material. Then Fe3O4/HSFC nanocomposites were prepared by combining HSFC with nanostructures of Fe3O4 via a hydrothermal process assisted by calcinating. The structure and morphology of Fe3O4/HSFC nanocomposites were characterized by powder X-ray diffraction and scanning electron microscopy(SEM), and their electrochemical performances were tested by constant current charge-discharge tests. The first coulomb efficiency of resulted Fe3O4/HSFC nanocomposite is 64% at the current density of 50mAg-1 and the calcination temperature of 600°C. The reversible capacity can maintain 610mAhg-1and 480mAhg-1 at the current densities of 50 and 500mAg-1 after 50 cycles, respectively. The results show that modification with Fe3O4 nanoparticles is an effective method to improve the electrochemical performances of the HSFC-based materials.