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A new strategy for integrating abundant oxygen functional groups into carbon felt electrode for vanadium redox flow batteries

Journal Article


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Abstract


  • The effects of surface treatment combining corona discharge and hydrogen peroxide (H2O2) on the electrochemical performance of carbon felt electrodes for vanadium redox flow batteries (VRFBs) have been thoroughly investigated. A high concentration of oxygen functional groups has been successfully introduced onto the surface of the carbon felt electrodes by a specially designed surface treatment, which is mainly responsible for improving the energy efficiency of VRFBs. In addition, the wettability of the carbon felt electrodes also can be significantly improved. The energy efficiency of the VRFB cell employing the surface modified carbon felt electrodes is improved by 7% at high current density (148 mA cm−2). Such improvement is attributed to the faster charge transfer and better wettability allowed by surface-active oxygen functional groups. Moreover, this method is much more competitive than other surface treatments in terms of processing time, production costs, and electrochemical performance.

Authors


  •   Kim, Ki Jae (external author)
  •   Lee, Seung-Wook (external author)
  •   Yim, Taeeun (external author)
  •   Kim, Jae-Geun (external author)
  •   Choi, Jang Wook (external author)
  •   Kim, Jung Ho
  •   Park, Min-Sik (external author)
  •   Kim, Young-Jun (external author)

Publication Date


  • 2014

Citation


  • Kim, K., Lee, S., Yim, T., Kim, J., Choi, J., Kim, J., Park, M. & Kim, Y. (2014). A new strategy for integrating abundant oxygen functional groups into carbon felt electrode for vanadium redox flow batteries. Scientific Reports, 4 1-6.

Scopus Eid


  • 2-s2.0-84940443239

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2266&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1265

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 1

End Page


  • 6

Volume


  • 4

Place Of Publication


  • United Kingdom

Abstract


  • The effects of surface treatment combining corona discharge and hydrogen peroxide (H2O2) on the electrochemical performance of carbon felt electrodes for vanadium redox flow batteries (VRFBs) have been thoroughly investigated. A high concentration of oxygen functional groups has been successfully introduced onto the surface of the carbon felt electrodes by a specially designed surface treatment, which is mainly responsible for improving the energy efficiency of VRFBs. In addition, the wettability of the carbon felt electrodes also can be significantly improved. The energy efficiency of the VRFB cell employing the surface modified carbon felt electrodes is improved by 7% at high current density (148 mA cm−2). Such improvement is attributed to the faster charge transfer and better wettability allowed by surface-active oxygen functional groups. Moreover, this method is much more competitive than other surface treatments in terms of processing time, production costs, and electrochemical performance.

Authors


  •   Kim, Ki Jae (external author)
  •   Lee, Seung-Wook (external author)
  •   Yim, Taeeun (external author)
  •   Kim, Jae-Geun (external author)
  •   Choi, Jang Wook (external author)
  •   Kim, Jung Ho
  •   Park, Min-Sik (external author)
  •   Kim, Young-Jun (external author)

Publication Date


  • 2014

Citation


  • Kim, K., Lee, S., Yim, T., Kim, J., Choi, J., Kim, J., Park, M. & Kim, Y. (2014). A new strategy for integrating abundant oxygen functional groups into carbon felt electrode for vanadium redox flow batteries. Scientific Reports, 4 1-6.

Scopus Eid


  • 2-s2.0-84940443239

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2266&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1265

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 1

End Page


  • 6

Volume


  • 4

Place Of Publication


  • United Kingdom