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RETRACTED ARTICLE: High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity

Author

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  • Sa Li

    (State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University
    Massachusetts Institute of Technology)

  • Junjie Niu

    (Massachusetts Institute of Technology
    University of Wisconsin-Milwaukee)

  • Yu Cheng Zhao

    (State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University)

  • Kang Pyo So

    (Massachusetts Institute of Technology)

  • Chao Wang

    (Massachusetts Institute of Technology)

  • Chang An Wang

    (State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University)

  • Ju Li

    (Massachusetts Institute of Technology
    Massachusetts Institute of Technology)

Abstract

Alloy-type anodes such as silicon and tin are gaining popularity in rechargeable Li-ion batteries, but their rate/cycling capabilities should be improved. Here by making yolk-shell nanocomposite of aluminium core (30 nm in diameter) and TiO2 shell (∼3 nm in thickness), with a tunable interspace, we achieve 10 C charge/discharge rate with reversible capacity exceeding 650 mAh g−1 after 500 cycles, with a 3 mg cm−2 loading. At 1 C, the capacity is approximately 1,200 mAh g−1 after 500 cycles. Our one-pot synthesis route is simple and industrially scalable. This result may reverse the lagging status of aluminium among high-theoretical-capacity anodes.

Suggested Citation

  • Sa Li & Junjie Niu & Yu Cheng Zhao & Kang Pyo So & Chao Wang & Chang An Wang & Ju Li, 2015. "RETRACTED ARTICLE: High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity," Nature Communications, Nature, vol. 6(1), pages 1-7, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8872
    DOI: 10.1038/ncomms8872
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