IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v11y2020i1d10.1038_s41467-020-19992-3.html
   My bibliography  Save this article

Maximizing ion accessibility in MXene-knotted carbon nanotube composite electrodes for high-rate electrochemical energy storage

Author

Listed:
  • Xiang Gao

    (Huazhong University of Science and Technology (HUST))

  • Xuan Du

    (Huazhong University of Science and Technology (HUST))

  • Tyler S. Mathis

    (Drexel University)

  • Mengmeng Zhang

    (Huazhong University of Science and Technology (HUST))

  • Xuehang Wang

    (Drexel University)

  • Jianglan Shui

    (Beihang University)

  • Yury Gogotsi

    (Drexel University)

  • Ming Xu

    (Huazhong University of Science and Technology (HUST))

Abstract

Improving the accessibility of ions in the electrodes of electrochemical energy storage devices is vital for charge storage and rate performance. In particular, the kinetics of ion transport in organic electrolytes is slow, especially at low operating temperatures. Herein, we report a new type of MXene-carbon nanotube (CNT) composite electrode that maximizes ion accessibility resulting in exceptional rate performance at low temperatures. The improved ion transport at low temperatures is made possible by breaking the conventional horizontal alignment of the two-dimensional layers of the MXene Ti3C2 by using specially designed knotted CNTs. The large, knot-like structures in the knotted CNTs prevent the usual restacking of the Ti3C2 flakes and create fast ion transport pathways. The MXene-knotted CNT composite electrodes achieve high capacitance (up to 130 F g−1 (276 F cm−3)) in organic electrolytes with high capacitance retention over a wide scan rate range of 10 mV s−1 to 10 V s−1. This study is also the first report utilizing MXene-based supercapacitors at low temperatures (down to −60 °C).

Suggested Citation

  • Xiang Gao & Xuan Du & Tyler S. Mathis & Mengmeng Zhang & Xuehang Wang & Jianglan Shui & Yury Gogotsi & Ming Xu, 2020. "Maximizing ion accessibility in MXene-knotted carbon nanotube composite electrodes for high-rate electrochemical energy storage," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19992-3
    DOI: 10.1038/s41467-020-19992-3
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-020-19992-3
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-020-19992-3?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Ke Li & Juan Zhao & Ainur Zhussupbekova & Christopher E. Shuck & Lucia Hughes & Yueyao Dong & Sebastian Barwich & Sebastien Vaesen & Igor V. Shvets & Matthias Möbius & Wolfgang Schmitt & Yury Gogotsi , 2022. "4D printing of MXene hydrogels for high-efficiency pseudocapacitive energy storage," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    2. Tao Wang & Runtong Pan & Murillo L. Martins & Jinlei Cui & Zhennan Huang & Bishnu P. Thapaliya & Chi-Linh Do-Thanh & Musen Zhou & Juntian Fan & Zhenzhen Yang & Miaofang Chi & Takeshi Kobayashi & Jianz, 2023. "Machine-learning-assisted material discovery of oxygen-rich highly porous carbon active materials for aqueous supercapacitors," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    3. Dixit, Fuhar & Zimmermann, Karl & Alamoudi, Majed & Abkar, Leili & Barbeau, Benoit & Mohseni, Madjid & Kandasubramanian, Balasubramanian & Smith, Kevin, 2022. "Application of MXenes for air purification, gas separation and storage: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 164(C).

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19992-3. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.