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What is the F/cm^2 for a commercial supercapacitor?

  1. May 10, 2015 #1
    What is the F/cm^2 for a commercially available supercapacitor? Much of the literature is on newer types of carbon, such as graphene, but are commercially available supercapacitors based on activated carbon?

    http://www.pnas.org/content/suppl/2015/03/22/1420398112.DCSupplemental
    In this article published on March 23, 2015, the F/cm^2 is 300mF/cm^2 (.3F/cm^2) for activated carbon (Table S1, p.16), yet references the information from an older article. The reference is to:
    Simon P, Gogotsi Y (2008) Materials for electrochemical capacitors. Nature Materials 7: 845-854.

    http://rsta.royalsocietypublishing.org/content/368/1923/3457
    The authors of the older article state, "Double-layer capacitance for carbon materials in liquid electrolytes is in the range of 5 to 20 μF cm−2, depending on the electrolyte." in this different but more up to date 2010 article.

    I have not unraveled a supercapacitor, but the range of 5 to 20 μF cm−2 seems rather low compared to the small size of supercapacitors commercially available, but is the .3F/cm^2 stated in the more recent article accurate?
     
  2. jcsd
  3. May 15, 2015 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
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