Advanced Materials

High-Rate Capability Silicon Decorated Vertically Aligned Carbon Nanotubes for Li-Ion Batteries

Authors

  • Aurélien Gohier,

    1. Laboratoire de Physique des Interfaces et des Couches Minces, LPICM, École Polytechnique, route de Saclay, 91128 Palaiseau Cedex, France
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  • Barbara Laïk,

    Corresponding author
    1. Institut de Chimie et des Matériaux Paris-Est, ICMPE/GESMAT, UMR 7182 CNRS-UPEC, 2 rue Henri Dunant, 94320 Thiais, France
    • Institut de Chimie et des Matériaux Paris-Est, ICMPE/GESMAT, UMR 7182 CNRS-UPEC, 2 rue Henri Dunant, 94320 Thiais, France.
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  • Ki-Hwan Kim,

    1. Laboratoire de Physique des Interfaces et des Couches Minces, LPICM, École Polytechnique, route de Saclay, 91128 Palaiseau Cedex, France
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  • Jean-Luc Maurice,

    1. Laboratoire de Physique des Interfaces et des Couches Minces, LPICM, École Polytechnique, route de Saclay, 91128 Palaiseau Cedex, France
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  • Jean-Pierre Pereira-Ramos,

    1. Institut de Chimie et des Matériaux Paris-Est, ICMPE/GESMAT, UMR 7182 CNRS-UPEC, 2 rue Henri Dunant, 94320 Thiais, France
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  • Costel Sorin Cojocaru,

    1. Laboratoire de Physique des Interfaces et des Couches Minces, LPICM, École Polytechnique, route de Saclay, 91128 Palaiseau Cedex, France
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  • Pierre Tran Van

    1. Renault SAS, DREAM/DETA/SEE, 1, avenue du Golf, 78288 Guyancourt, France
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Abstract

The concept of a hybrid nanostructured collector made of thin vertically aligned carbon nanotubes (CNTs) decorated with Si nanoparticles provides high power density anodes in lithium-ion batteries. An impressive rate capability is achieved due to the efficient electronic conduction of CNTs combined with well defined electroactive Si nanoparticles: capacities of 3000 mAh g−1 at 1.3C and 800 mAh g−1 at 15C are achieved.

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