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Issue 42, 2014
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Hierarchical porous nitrogen-rich carbon monoliths via ice-templating: high capacity and high-rate performance as lithium-ion battery anode materials

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Abstract

Hierarchical porous nitrogen-rich carbon monoliths were prepared from a polyacrylonitrile (PAN) precursor by employing a novel & facile ice-templating, thermal annealing and pyrolysis technique. The achieved carbon monoliths were characterised by scanning electron microscopy (SEM), Hg-intrusion porosimetry, thermogravimetric analysis (TGA), N2 gas-sorption, elemental analysis, X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD) and Raman spectroscopy. Electrochemical evaluation of the carbon materials as anodes for the rechargeable lithium-ion battery revealed an impressive stable reversible capacity as high as 745 mA h g−1 at a current density of 50 mA g−1. Incorporation of melamine (for further N-doping) and graphene into the carbon monoliths was achieved easily, and found to significantly enhance high rate performance – with a reversible capacity of about 300 mA h g−1 obtained at the ultra high current density of 10 A g−1.

Graphical abstract: Hierarchical porous nitrogen-rich carbon monoliths via ice-templating: high capacity and high-rate performance as lithium-ion battery anode materials

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Article information


Submitted
05 Jun 2014
Accepted
08 Sep 2014
First published
08 Sep 2014

J. Mater. Chem. A, 2014,2, 17787-17796
Article type
Paper
Author version available

Hierarchical porous nitrogen-rich carbon monoliths via ice-templating: high capacity and high-rate performance as lithium-ion battery anode materials

A. D. Roberts, S. Wang, X. Li and H. Zhang, J. Mater. Chem. A, 2014, 2, 17787
DOI: 10.1039/C4TA02839B

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