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Nanosilicon-Based Thick Negative Composite Electrodes for Lithium Batteries with Graphene as Conductive Additive

Authors

  • Binh Phuong Nhan Nguyen,

    1. Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2, rue de la Houssinière–B.P. 32229 - 44322, Nantes cedex 3, France
    Current affiliation:
    1. These authors contributed equally to this work
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  • Nanjundan Ashok Kumar,

    1. Laboratoire de Chimie Inorganique et Biologique, UMR-E CEA-UJF, Institute for Nanoscience and Cryogenics Commissariat, à l'énergie atomique (CEA), 17 rue des martyrs, 38054, Grenoble, cedex 9, France
    Current affiliation:
    1. These authors contributed equally to this work
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  • Joël Gaubicher,

    1. Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2, rue de la Houssinière–B.P. 32229 - 44322, Nantes cedex 3, France
    2. Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, France
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  • Florence Duclairoir,

    1. Laboratoire de Chimie Inorganique et Biologique, UMR-E CEA-UJF, Institute for Nanoscience and Cryogenics Commissariat, à l'énergie atomique (CEA), 17 rue des martyrs, 38054, Grenoble, cedex 9, France
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  • Thierry Brousse,

    1. Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2, rue de la Houssinière–B.P. 32229 - 44322, Nantes cedex 3, France
    2. Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, France
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  • Olivier Crosnier,

    1. Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2, rue de la Houssinière–B.P. 32229 - 44322, Nantes cedex 3, France
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  • Lionel Dubois,

    1. Laboratoire de Chimie Inorganique et Biologique, UMR-E CEA-UJF, Institute for Nanoscience and Cryogenics Commissariat, à l'énergie atomique (CEA), 17 rue des martyrs, 38054, Grenoble, cedex 9, France
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  • Gérard Bidan,

    1. Laboratoire de Chimie Inorganique et Biologique, UMR-E CEA-UJF, Institute for Nanoscience and Cryogenics Commissariat, à l'énergie atomique (CEA), 17 rue des martyrs, 38054, Grenoble, cedex 9, France
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  • Dominique Guyomard,

    1. Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2, rue de la Houssinière–B.P. 32229 - 44322, Nantes cedex 3, France
    2. Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, France
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  • Bernard Lestriez

    Corresponding author
    1. Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2, rue de la Houssinière–B.P. 32229 - 44322, Nantes cedex 3, France
    2. Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, France
    • Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2, rue de la Houssinière–B.P. 32229 - 44322, Nantes cedex 3, France.

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Abstract

Reduced graphene oxide (rGO) is used as a conductive additive for nanosilicon-based lithium battery anodes with the high active-mass loading typically required for industrial applications. In contrast to conventional Si electrodes that use acetylene black (AcB) as an additive, the rGO system shows pronounced improvement of electrochemical performance, irrespective of the cycling conditions. With capacity limitation, the rGO system results in improved coulombic efficiency (99.9%) and longer cycle life than conventional electrodes. Upon cycling without capacity limitation, much higher discharge capacity is maintained (2000 mAh g−1 after 100 cycles for 2.5 mg of Si cm−2). Used in conjunction with the bridging carboxymethyl cellulose binder, the crumpled and resilient rGO allows highly reversible functioning of the electrode in which the Si particles repeatedly inflate and deflate upon alloying and dealloying with lithium.

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