Facile Synthesis and Enhanced Electrochemical Performances of Hierarchical ZnFe2O4-Graphene Hybrid as an Anode Material for Li-Ion Batteries

作者：Sun, Limei; Han, Songbai; Liu, Yuntao; Chen, Dongfeng^*; Hu, Zhongbo; Liu, Xiangfeng^*

来源：Journal of Nanoscience and Nanotechnology, 2017, 17(3): 2093-2097.

DOI：10.1166/jnn.2017.12831

• Lithium Ion Battery
• Anode
• ZnFe2O4
• Hierarchical
• Graphene

ZnFe2O4 nanosheets with some nanopores have been synthesized for the first time by a facile co-precipitation method. Subsequently, the ZnFe2O4-graphene hybrid (RGO-ZnFe2O4) with a hierarchical structure are fabricated by in situ chemical reduction of graphene oxide (GO). X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are employed to characterize the hierarchical structure and morphology. The cycling performance and rate capability of RGO-ZnFe2O4 are largely enhanced. After 50 cycles, the reversible capacity at a current density of 100 mA g(-1) is kept at 871.2 mAh g(-1), which is about 5 times of bare ZnFe2O4. At a current density of 1000 mA g(-1) the capacity of RGO-ZnFe2O4 is about 455.5 mAh g(-1) but the capacity of bare ZnFe2O4 is only about 125 mAh g(-1). The high cyclability and high-rate capability of RGO-ZnFe2O4 can be attributed to the synergetic effect of the conductive graphene and the hierarchical architecture structure.

• 出版日期2017-3
• 单位中国原子能科学研究院; 中国科学院大学