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Synthesis of Single-Crystalline LiMn2O4 and LiMn1.5Ni0.5O4 Nanocrystals and Their Lithium Storage Properties

Authors

  • Dr. Ziyang Lu,

    1. School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798 (Singapore)
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  • Xianhong Rui,

    1. School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798 (Singapore)
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  • Huiteng Tan,

    1. School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798 (Singapore)
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  • Wenyu Zhang,

    1. School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798 (Singapore)
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  • Prof. Huey Hoon Hng,

    Corresponding author
    1. School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798 (Singapore)
    • School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798 (Singapore)
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  • Prof. Qingyu Yan

    Corresponding author
    1. School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798 (Singapore)
    • School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798 (Singapore)
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Abstract

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Yolk–shell spheres as nanoreactors: Single-crystalline LiMn2O4 and LiMn1.5Ni0.5O4 nanocrystals have been prepared by using yolk–shell spheres as nanoreactors to confine the size of the nanocrystals to a range of 14–19 nm (see scheme). These nanocrystals were subsequently employed as cathode materials and showed high lithium-ion storage capacities and stable charge–discharge cycling, especially at high current densities.

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