[tt] advanced nanotechnology - Printable carbon nanotube batteries

Eugen Leitl <eugen at leitl.org> on Sun Nov 18 11:24:26 UTC 2007 
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Date: Sun, 18 Nov 2007 03:15:26 -0500
To: eugen <eugen at leitl.org>
Subject: advanced nanotechnology - Printable carbon nanotube batteries
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"[2]advanced nanotechnology" - 1 new article

    1. [3]Printable carbon nanotube batteries
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[6]Printable carbon nanotube batteries

   [7]Batteries that can be printed onto a surface with "nanotube ink"
   have been demonstrated by US researchers, who say the technique will
   fit well within the growing field of [8]printed electronics, which
   still use conventional power sources. [9]Solar cells could also be
   printed from inkjet printers
   [10]Carbon nanotube production is expanding and prices are falling.

     To make the battery, a layer of nanotubes is first deposited in the
     form of "nanotube ink" onto a surface. This layer acts as the
     charge collector, which removes current from the battery.
     Next, a layer of nanotube ink mixed with manganese oxide powder and
     electrolytes, which carries charge within the cell, is applied on
     top. This layer acts as the cathode. Finally, a piece of zinc foil
     - the anode - is applied.
     "The batteries are similar to conventional batteries," says Gruner,
     "with the electrically conducting nanoscale networks replacing
     conventional metals and electrodes."
     He adds that the designs should make it possible to get more power
     than a conventional design would from the same materials, , "an
     important factor for portable electronics applications."
     The researchers also made supercapacitors using the inking
     technique and plan to combine these with batteries for applications
     requiring more power.
     Furthermore, since both printed batteries and supercapacitors can
     be made entirely at room temperature, it should be possible to
     mass-produce them using established printing methods, Gruner says.
     Gruner says his research team is working to increase power output
     and to demonstrate suitability of the designs for industrial
     production.

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More Recent Articles

     * [24]New method to mnipulate light a million times more efficiently
     * [25]Nantero's newest NRAM promise is for 2008
     * [26]Silicon electronics can be printed by Ink Jet printers
     * [27]US 9th Appeals Court tosses federal fuel-economy standards
     * [28]Nantero NRAM still not commercialized

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