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Ionised air battery

  1. Sep 1, 2013 #1
    Radioactive material ionises the air around it.
    Carbon nano tubes have an extremely large surface area, & could possibly "store" the ionised charge.
    If a volume of carbon nano tubes is wrapped around a core of insulated radioactive material, can a potential difference exist between the wrapping & the core?
  2. jcsd
  3. Sep 3, 2013 #2


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    Gold Member

    Charge effects are challenging to manage, especially within a short radius of a radioactive core.
    There have been efforts to harness radioactivity to create electric power directly by using the radiation to excite a phosphor. The emitted light then drives solar cells which produce electric power. The overall efficiency here is not high, but the setup is reasonably safe and robust.
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