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Issue 5, 2017
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Bottom-up synthesis of nitrogen-doped porous carbon scaffolds for lithium and sodium storage

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Abstract

Here we report an effective bottom-up solution-phase process for the preparation of nitrogen-doped porous carbon scaffolds (NPCSs), which can be employed as high-performance anode materials for both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). The as-obtained NPCSs show favorable features for electrochemical energy storage such as high specific surface area, appropriate pore size distribution (3.9 nm in average), large pore volume (1.36 cm3 g−1), nanosheet-like morphology, a certain degree of graphitization, enlarged interlayer distance (0.38 nm), high content of nitrogen (∼5.6 at%) and abundant electrochemically-active sites. Such a unique architecture provides efficient Li+/Na+ reservoirs, and also possesses smooth electron transport pathways and electrolyte access. For LIBs, the anodes based on NPCSs deliver a high reversible capacity of 1275 mA h g−1 after 250 cycles at 0.5 C (1 C = 372 mA g−1), and outstanding cycling stabilities with a capacity of 518 mA h g−1 after 500 cycles at 5 C and 310 mA h g−1 after 1500 cycles even at 10 C. For SIBs, the anodes based on NPCSs display a reversible capacity of 257 mA h g−1 at 50 mA g−1, and superior long-term cycling performance with a capacity of 191 mA h g−1 after 1000 cycles at 200 mA g−1.

Graphical abstract: Bottom-up synthesis of nitrogen-doped porous carbon scaffolds for lithium and sodium storage

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Publication details

The article was received on 22 Oct 2016, accepted on 13 Jan 2017 and first published on 13 Jan 2017


Article type: Paper
DOI: 10.1039/C6NR08296C
Citation: Nanoscale, 2017,9, 1972-1977
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    Bottom-up synthesis of nitrogen-doped porous carbon scaffolds for lithium and sodium storage

    H. Lu, R. Chen, Y. Hu, X. Wang, Y. Wang, L. Ma, G. Zhu, T. Chen, Z. Tie, Z. Jin and J. Liu, Nanoscale, 2017, 9, 1972
    DOI: 10.1039/C6NR08296C

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