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Synthesis of Two-Dimensional Transition-Metal Phosphates with Highly Ordered Mesoporous Structures for Lithium-Ion Battery Applications

Authors

  • Dan Yang,

    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
    2. TUM CREATE, 1 CREATE Way, no. 10-02 CREATE Tower, Singapore 138602 (Singapore)
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  • Dr. Ziyang Lu,

    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
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  • Dr. Xianhong Rui,

    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
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  • Xiao Huang,

    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
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  • Dr. Hai Li,

    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
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  • Dr. Jixin Zhu,

    1. TUM CREATE, 1 CREATE Way, no. 10-02 CREATE Tower, Singapore 138602 (Singapore)
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  • Wenyu Zhang,

    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
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  • Prof. Yeng Ming Lam,

    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
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  • Prof. Huey Hoon Hng,

    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
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  • Prof. Hua Zhang,

    Corresponding author
    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
    • School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)

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  • Prof. Qingyu Yan

    Corresponding author
    1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)
    2. TUM CREATE, 1 CREATE Way, no. 10-02 CREATE Tower, Singapore 138602 (Singapore)
    3. Energy Research Institute@NTU, Nanyang Technological University, Singapore 637459 (Singapore)
    • School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore 637819 (Singapore)

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  • This work was supported by MOE under AcRF Tier 2 (ARC 26/13, no. MOE2013-T2-1-034), AcRF Tier 1 (RG2/13, RG 61/12, RGT18/13, RG5/13), A*STAR SERC grant 1021700144, MPA 23/04.15.03 grant, a Start-Up Grant (M4080865.070.706022) in Singapore, and Singapore National Research Foundation under the CREATE program: EMobility in Megacities. This research is also conducted by NTU-HUJ-BGU Nanomaterials for Energy and Water Management Programme under the Campus for Research Excellence and Technological Enterprise (CREATE) that is supported by the National Research Foundation, Prime Minister’s Office, Singapore.

Abstract

Materials with ordered mesoporous structures have shown great potential in a wide range of applications. In particular, the combination of mesoporosity, low dimensionality, and well-defined morphology in nanostructures may exhibit even more attractive features. However, the synthesis of such structures is still challenging in polar solvents. Herein, we report the preparation of ultrathin two-dimensional (2D) nanoflakes of transition-metal phosphates, including FePO4, Mn3(PO4)2, and Co3(PO4)2, with highly ordered mesoporous structures in a nonpolar solvent. The as-obtained nanoflakes with thicknesses of about 3.7 nm are constructed from a single layer of parallel-packed pore channels. These uniquely ordered mesoporous 2D nanostructures may originate from the 2D assembly of cylindrical micelles formed by the amphiphilic precursors in the nonpolar solvent. The 2D mesoporous FePO4 nanoflakes were used as the cathode for a lithium-ion battery, which exhibits excellent stability and high rate capabilities.

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