IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i12p3030-d370439.html
   My bibliography  Save this article

Influence of the Perovskite La 0.8 Sr 0.2 Mn 0.5 Co 0.5 O 3-δ on the Electrochemical Performance of the Graphene-Based Supercapacitor

Author

Listed:
  • Bo-Min Kim

    (Department of Mechanical Systems Engineering, Sookmyung Women’s University, Seoul 04310, Korea)

  • Hyo-Young Kim

    (Department of Chemical Engineering, College of Engineering, Wonkwang University, Iksan, Jeonbuk 54538, Korea)

  • Young-Wan Ju

    (Department of Chemical Engineering, College of Engineering, Wonkwang University, Iksan, Jeonbuk 54538, Korea
    Nanoscale Sciences and Technology Institute, Wonkwang University, Iksan, Jeonbuk 570-749, Korea)

  • Jeeyoung Shin

    (Department of Mechanical Systems Engineering, Sookmyung Women’s University, Seoul 04310, Korea
    Institute of Advanced Materials and Systems, Sookmyung Women’s University, Seoul 04310, Korea)

Abstract

A supercapacitor is a potential energy system that will be a part of an efficient storage device of renewable energy, such as a small battery and a large energy storage system (ESS), etc. However, a lot of efforts have been devoted to improving stability. Generally, ABO 3 -type perovskite structure has been studied as an electrode and/or an oxide ion-conducting electrolyte for solid oxide fuel cells with stable structural stability at high temperatures. In this study, perovskite material (La 0.8 Sr 0.2 Mn 0.5 Co 0.5 O 3-δ . LSMCO) was added as a component of the supercapacitor electrode for enhanced stability. According to electrochemical measurements, at 5 mV/s, the specific capacitance of the graphene-based electrode (G95) is 68 F/g, and the electrode mixed with perovskite (G70L25) is 55 F/g. Nonetheless, the standard deviation of the capacitance value of G70L25 is smaller than that of G95. Alongside this, the G70L25 electrode showed that specific capacitance decreased in the cycling test, but, for the G95 electrode, the specific capacitance after the 4990th cycle increased or decreased, resulting in unpredictable results. Therefore, perovskite added electrode (G70L25) shows higher stability compared to the graphene nanoplatelets electrode (G95) in both initial and cycling performance, albeit a lower specific capacitance.

Suggested Citation

  • Bo-Min Kim & Hyo-Young Kim & Young-Wan Ju & Jeeyoung Shin, 2020. "Influence of the Perovskite La 0.8 Sr 0.2 Mn 0.5 Co 0.5 O 3-δ on the Electrochemical Performance of the Graphene-Based Supercapacitor," Energies, MDPI, vol. 13(12), pages 1-11, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:12:p:3030-:d:370439
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/12/3030/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/12/3030/
    Download Restriction: no
    ---><---

    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:gam:jeners:v:13:y:2020:i:12:p:3030-:d:370439. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.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.