IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v220y2021ics0360544220328036.html
   My bibliography  Save this article

High performance energy storage electrodes based on 3D Z-CoO/RGO nanostructures for supercapacitor applications

Author

Listed:
  • Zha, Xiaoting
  • Wu, Zhaokun
  • Cheng, Zhengfu
  • Yang, Wenyao
  • Li, Jie
  • Chen, Yan
  • He, Liu
  • Zhou, Enmin
  • Yang, Yajie

Abstract

In this paper, by precisely tuning the structure of composite, a 3D silkworm cocoon-like composite material based on reduced graphene oxide (RGO) and Z-CoO (with a ZIF-67 as precursor) are prepared through a in situ hydrothermal method. This Z-CoO/RGO nanocomposite exhibits a highly opened nanostructure and high conductive capability. The electrochemical performance reveals that an outstanding mass specific capacity (275 F g−1 at current density of 1 A g−1), which is much higher than the pure ZIF-67 with 2.7 F g−1, and excellent resistance characteristic are obtained due to the excellent synergistic effect between the MOFs and RGO. Moreover, a hybridized asymmetric supercapacitor with Z-CoO/RGO as anode and active carbon as cathode is constructed. The device shows ultra-low resistance (the equivalent-series resistance and the charge-transfer resistance are 1.13 Ω and 0.43 Ω, respectively) and stable cycle life about 1000 times is observed. This Z-CoO/RGO electrode also presents high current loading performance for possible high-power density type devices. Our work reveals that the straightforward hydrothermal treatment is a promising method for the preparation of dedicated MOFs complex nanostructure for high performance supercapacitor electrode applications.

Suggested Citation

  • Zha, Xiaoting & Wu, Zhaokun & Cheng, Zhengfu & Yang, Wenyao & Li, Jie & Chen, Yan & He, Liu & Zhou, Enmin & Yang, Yajie, 2021. "High performance energy storage electrodes based on 3D Z-CoO/RGO nanostructures for supercapacitor applications," Energy, Elsevier, vol. 220(C).
  • Handle: RePEc:eee:energy:v:220:y:2021:i:c:s0360544220328036
    DOI: 10.1016/j.energy.2020.119696
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544220328036
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.energy.2020.119696?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
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

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


    Cited by:

    1. Chen, Dongfang & Pan, Lyuming & Pei, Pucheng & Huang, Shangwei & Ren, Peng & Song, Xin, 2021. "Carbon-coated oxygen vacancies-rich Co3O4 nanoarrays grow on nickel foam as efficient bifunctional electrocatalysts for rechargeable zinc-air batteries," Energy, Elsevier, vol. 224(C).
    2. Liu, Hongwei & Wang, Yongzhen & Lv, Liang & Liu, Xiao & Wang, Ziqi & Liu, Jun, 2023. "Oxygen-enriched hierarchical porous carbons derived from lignite for high-performance supercapacitors," Energy, Elsevier, vol. 269(C).
    3. Jia, Shanghui & Chen, Xinhui & Jin, Jiayu, 2024. "Digital disruption and energy efficiency: The impact of regional digitalization on China's industrial sector," Energy, Elsevier, vol. 300(C).

    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:eee:energy:v:220:y:2021:i:c:s0360544220328036. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    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.