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The influence of large cations on the electrochemical properties of tunnel-structured metal oxides

Author

Listed:
  • Yifei Yuan

    (Michigan Technological University
    Argonne National Laboratory)

  • Chun Zhan

    (Argonne National Laboratory)

  • Kun He

    (University of Illinois at Chicago)

  • Hungru Chen

    (University of Bath)

  • Wentao Yao

    (Michigan Technological University)

  • Soroosh Sharifi-Asl

    (University of Illinois at Chicago)

  • Boao Song

    (University of Illinois at Chicago)

  • Zhenzhen Yang

    (Argonne National Laboratory)

  • Anmin Nie

    (University of Illinois at Chicago
    Materials Genome Institute and Shanghai Materials Genome Institute, Shanghai University)

  • Xiangyi Luo

    (Argonne National Laboratory)

  • Hao Wang

    (Argonne National Laboratory)

  • Stephen M. Wood

    (University of Bath)

  • Khalil Amine

    (Argonne National Laboratory)

  • M. Saiful Islam

    (University of Bath)

  • Jun Lu

    (Argonne National Laboratory)

  • Reza Shahbazian-Yassar

    (University of Illinois at Chicago
    Michigan Technological University)

Abstract

Metal oxides with a tunnelled structure are attractive as charge storage materials for rechargeable batteries and supercapacitors, since the tunnels enable fast reversible insertion/extraction of charge carriers (for example, lithium ions). Common synthesis methods can introduce large cations such as potassium, barium and ammonium ions into the tunnels, but how these cations affect charge storage performance is not fully understood. Here, we report the role of tunnel cations in governing the electrochemical properties of electrode materials by focusing on potassium ions in α-MnO2. We show that the presence of cations inside 2 × 2 tunnels of manganese dioxide increases the electronic conductivity, and improves lithium ion diffusivity. In addition, transmission electron microscopy analysis indicates that the tunnels remain intact whether cations are present in the tunnels or not. Our systematic study shows that cation addition to α-MnO2 has a strong beneficial effect on the electrochemical performance of this material.

Suggested Citation

  • Yifei Yuan & Chun Zhan & Kun He & Hungru Chen & Wentao Yao & Soroosh Sharifi-Asl & Boao Song & Zhenzhen Yang & Anmin Nie & Xiangyi Luo & Hao Wang & Stephen M. Wood & Khalil Amine & M. Saiful Islam & J, 2016. "The influence of large cations on the electrochemical properties of tunnel-structured metal oxides," Nature Communications, Nature, vol. 7(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13374
    DOI: 10.1038/ncomms13374
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    Cited by:

    1. Xu, Nengneng & Zhang, Yanxing & Wang, Yudong & Wang, Min & Su, Tianshun & Coco, Cameron A. & Qiao, Jinli & Zhou, Xiao-Dong, 2020. "Hierarchical bifunctional catalysts with tailored catalytic activity for high-energy rechargeable Zn-air batteries," Applied Energy, Elsevier, vol. 279(C).

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