Related Experiment Video
Updated: Apr 12, 2026
Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material
Published on: February 5, 2019
Fe3O4 nanoflakes in an N-doped carbon matrix as high-performance anodes for lithium ion batteries
Cong Guo1, Lili Wang, Yongchun Zhu
1Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, PR China. ychzhu@ustc.edu.cn ytqian@ustc.edu.cn.
Abstract:
Fe3O4 nanoflakes in an N-doped carbon matrix (Fe3O4 NF@NC) were prepared by solvothermal synthesis of Fe3O4 nanoflakes and in situ polymerization of pyrrole on the surface of Fe3O4 followed by heat treatment. The Fe3O4 NF@NC is composed of Fe3O4 nanoflakes with a width of 50-60 nm and a thickness of 10 nm dispersed in the N-doped carbon matrix. The carbon content varies from 18% to 50% on controlling the amount of pyrrole added, therefore the Fe3O4 NF@NC with 44% carbon content performs the best. Due to the cooperation of the two-dimensional (2D) structure of Fe3O4 nanoflakes and the N-doped carbon matrix, the obtained Fe3O4 NF@NC (44% carbon content) exhibits electrochemical performance with a reversible capacity of 1046 mA h g(-1) at 0.2 C (1 C = 924 mA g(-1)) over 200 cycles, 662 mA h g(-1) at 1 C after 500 cycles and 600 mA h g(-1) at 5 C over 200 cycles.
