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Issue 28, 2017
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Multi-functionalized herringbone carbon nanofiber for anodes of lithium ion batteries

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Abstract

Herringbone carbon nanofibers (HCNFs) are prepared for use as anode materials in lithium-ion batteries (LIBs). HCNFs are prepared using a Ni–Fe catalyst and subsequently multi-functionalized with oxygen using the Hummers’ method, and then with both oxygen and nitrogen-containing 2-ureido-4[1H]pyrimidinone (UHP) moieties, which endow the HCNFs with the ability to form quadruple hydrogen bonds (QHBs). The as-prepared HCNFs are, on average, 13 μm in length and 100 nm in diameter, with a highly graphitic structure. The oxidized HCNFs (Ox-HCNFs) obtained by Hummers' method are partially exfoliated, having double-bladed saw-like structures that extend in the direction of the graphite planes. QHBs are formed between the HCNFs after functionalization with the UHP moieties. The final surface-modified HCNFs (N-Ox-HCNFs) have more electrochemical sites, shorter Li+ diffusion lengths, and additional electron pathways compared with the as-prepared HCNF and Ox-HCNF. The introduction of oxygen- and nitrogen-containing functional groups improves the performance of LIBs: a high charge capacity of 763 mA h g−1 at 0.1 A g−1, excellent rate capability (a capacity of 402 mA h g−1 at 3 A g−1), and near 100% capacity retention after 300 cycles are reported.

Graphical abstract: Multi-functionalized herringbone carbon nanofiber for anodes of lithium ion batteries

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Publication details

The article was received on 16 May 2017, accepted on 28 Jun 2017 and first published on 28 Jun 2017


Article type: Paper
DOI: 10.1039/C7CP03246C
Citation: Phys. Chem. Chem. Phys., 2017,19, 18612-18618
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    Multi-functionalized herringbone carbon nanofiber for anodes of lithium ion batteries

    M. Kim, M. Cho, K. Kim, H. G. Jeong, J. T. Han and K. C. Roh, Phys. Chem. Chem. Phys., 2017, 19, 18612
    DOI: 10.1039/C7CP03246C

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