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Structure and Electrochemical Performance of Carbide-Derived Carbon Nanopowders

Authors

  • Carlos R. Pérez,

    1. Department of Materials Science and Engineering & A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USA
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  • Sun-Hwa Yeon,

    1. Distributed Power Generation and Energy Storage Group, Korea Institute of Energy Research, Daejeon, 305-343, South Korea
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  • Julie Ségalini,

    1. Universite Paul Sabatier, CIRIMAT UMR-CNRS 5085, 118 route de Narbonne 31062 Toulouse Cedex 9–France, Réseau National sur le Stockage Electrochimique de l'Energie, FR CNRS n 3459
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  • Volker Presser,

    1. Department of Materials Science and Engineering & A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USA
    Current affiliation:
    1. INM-Leibniz Institute for New Materials, Energy Materials Group, Campus D2 2, D-66123 Saarbrücken, Germany
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  • Pierre-Louis Taberna,

    1. Universite Paul Sabatier, CIRIMAT UMR-CNRS 5085, 118 route de Narbonne 31062 Toulouse Cedex 9–France, Réseau National sur le Stockage Electrochimique de l'Energie, FR CNRS n 3459
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  • Patrice Simon,

    1. Universite Paul Sabatier, CIRIMAT UMR-CNRS 5085, 118 route de Narbonne 31062 Toulouse Cedex 9–France, Réseau National sur le Stockage Electrochimique de l'Energie, FR CNRS n 3459
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  • Yury Gogotsi

    Corresponding author
    1. Department of Materials Science and Engineering & A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USA
    • Department of Materials Science and Engineering & A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USA.
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Abstract

Microporous carbon materials are widely used in gas storage, sorbents, supercapacitor electrodes, water desalination, and catalyst supports. While these microporous carbons usually have a particle size in the 1–100 μm range, here the synthesis of porous carbide-derived carbon (CDC) with particle diameters around 30 nm by extraction of titanium from nanometer-sized titanium carbide (TiC) powder at temperatures of 200 °C and above is reported. Nanometer-sized CDCs prepared at 200–400 °C show a disordered structure and the presence of CN sp1 bonds. Above 400 °C, the CN bond disappears with the structure transition to disordered carbon similar to that observed after synthesis from carbide micropowders. Compared to CDCs produced from micrometer-sized TiC, nano-CDC has a broader pore size distribution due to interparticle porosity and a large contribution from the surface layers. The material shows excellent electrochemical performance due to its easily accessible pores and a large specific surface area.

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