IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v7y2016i1d10.1038_ncomms10670.html
   My bibliography  Save this article

Dissolution and ionization of sodium superoxide in sodium–oxygen batteries

Author

Listed:
  • Jinsoo Kim

    (Research Institute of Advanced Materials, Seoul National University)

  • Hyeokjun Park

    (Research Institute of Advanced Materials, Seoul National University)

  • Byungju Lee

    (Research Institute of Advanced Materials, Seoul National University
    Center for Nanoparticle Research at Institute for Basic Science, Seoul National University)

  • Won Mo Seong

    (Research Institute of Advanced Materials, Seoul National University)

  • Hee-Dae Lim

    (Research Institute of Advanced Materials, Seoul National University)

  • Youngjoon Bae

    (Research Institute of Advanced Materials, Seoul National University)

  • Haegyeom Kim

    (Research Institute of Advanced Materials, Seoul National University
    Center for Nanoparticle Research at Institute for Basic Science, Seoul National University)

  • Won Keun Kim

    (Environment and Energy Research Team, Hyundai Motor Company)

  • Kyoung Han Ryu

    (Environment and Energy Research Team, Hyundai Motor Company)

  • Kisuk Kang

    (Research Institute of Advanced Materials, Seoul National University
    Center for Nanoparticle Research at Institute for Basic Science, Seoul National University)

Abstract

With the demand for high-energy-storage devices, the rechargeable metal–oxygen battery has attracted attention recently. Sodium–oxygen batteries have been regarded as the most promising candidates because of their lower-charge overpotential compared with that of lithium–oxygen system. However, conflicting observations with different discharge products have inhibited the understanding of precise reactions in the battery. Here we demonstrate that the competition between the electrochemical and chemical reactions in sodium–oxygen batteries leads to the dissolution and ionization of sodium superoxide, liberating superoxide anion and triggering the formation of sodium peroxide dihydrate (Na2O2·2H2O). On the formation of Na2O2·2H2O, the charge overpotential of sodium–oxygen cells significantly increases. This verification addresses the origin of conflicting discharge products and overpotentials observed in sodium–oxygen systems. Our proposed model provides guidelines to help direct the reactions in sodium–oxygen batteries to achieve high efficiency and rechargeability.

Suggested Citation

  • Jinsoo Kim & Hyeokjun Park & Byungju Lee & Won Mo Seong & Hee-Dae Lim & Youngjoon Bae & Haegyeom Kim & Won Keun Kim & Kyoung Han Ryu & Kisuk Kang, 2016. "Dissolution and ionization of sodium superoxide in sodium–oxygen batteries," Nature Communications, Nature, vol. 7(1), pages 1-9, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10670
    DOI: 10.1038/ncomms10670
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms10670
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms10670?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
    ---><---

    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:7:y:2016:i:1:d:10.1038_ncomms10670. 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.