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Issue 22, 2015
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Fe3O4 nanoflakes in an N-doped carbon matrix as high-performance anodes for lithium ion batteries

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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.

Graphical abstract: Fe3O4 nanoflakes in an N-doped carbon matrix as high-performance anodes for lithium ion batteries

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Supplementary files

Article information


Submitted
27 Mar 2015
Accepted
01 May 2015
First published
05 May 2015

Nanoscale, 2015,7, 10123-10129
Article type
Paper

Fe3O4 nanoflakes in an N-doped carbon matrix as high-performance anodes for lithium ion batteries

C. Guo, L. Wang, Y. Zhu, D. Wang, Q. Yang and Y. Qian, Nanoscale, 2015, 7, 10123
DOI: 10.1039/C5NR01953B

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