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This discussion relates to Technology Review's article Battery Breakthrough?.

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  CapacitorMan
  

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  11/29/2007 09:11 AM

  New information on EEStor

  Tyler has started a new thread at:
  
  http://tyler.blogware.com/blog/_archives/2007/11/1/3328442.html?message
  
  which seems to have attracted some knowledgeable people. The concensus does not seem optimistic.

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  jhbretz
  

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  01/10/2008 08:22 AM

  Lockheed-Martin makes Deal with EESTOR

  Check out the interview at
  
  http://www.gm-volt.com/2008/01/10/lockheed-martin-signs-agreement-with-eestor/
  

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  jerryglen
  

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  03/11/2008 08:16 PM

  Leakage

  Since we have gone philosophical, let me return us to the discussion at hand - One thing I am always looking for but never see is what is the Q factor, or leakage? How long will the capacitor hold the charge. Never seen any data. Curious. -- Regarding the theorists and hopefuls out there, there is a place for theory. Yes it changes. We are all hopeful that EEStores capacitor is for real but unless new physics is discovered, theory stands as a bedrock upon which all our technology stands. Until the theorists are proven wrong I won't be running to my stock broker!

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    banrjeer
    

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    03/24/2008 04:37 PM

    Re: Leakage

    Most theories are idealizations and are not infallible.
    
    The bulk of the discussions here have centered around bulk barium titanate powder. What about its properties as a constituent in a heterogenous ordered(??) nanostructure.
    

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  82ndVet
  

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  04/04/2008 08:28 PM

  EEStor

  I don't know what everyone gets so worked up about.  If they found a way around the supposed "theory", great!  Sometimes it takes an innovator to go beyond what some have called a law or rule of thumb to prove the law or rules can change because the "innovator" explores other realms where the rules don't apply.  Myself as a hobby, I jump out of planes and by manipulation change in body form I can exceed the old world rule of terminal velocity,,,hmm ,just figure..

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  yachtshop
  

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  05/16/2008 08:23 PM

  battery breakthrough ?

  It could be true, stranger things are happening out there.
  As they  say in Maine, It's hard tellin, not knowin.

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  zawy
  

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  05/19/2008 05:53 PM

  Permittivity problem

  from wikipedia:
  
  Critics have argued that measurements of the permittivity of the EEStor components were made only at low voltage and that permittivity would have been much lower due to the phenomenon of dielectric saturation which lowers the effective permittivity during high voltage/micron conditions. However, the WIPO (world patent) filed by EEStor in August 2005[12] contains permittivity data averaging 19,818 at 85°C and 5,000 V at 9.81 microns in thickness (over 500 V/micron). No other researchers have reported such a high permittivity at such a high voltage/micron. The EEStor patents do not give an explanation for how this was achieved. The EEStor U.S. patent references a patent[13] that uses similar coatings on various sub-micron particles of modified barium titanate. Under one set of conditions, they achieved a permittivity of only 2400 and did not report the permittivity at high voltages. Their breakdown voltage was 4 times less, a little over 100 V/micron.
  
  The EEStor patents cite a 1993 article [14] and a 2000 Philips Corporation patent[15] as exact descriptions of its "calcined composition-modified barium titanate powder". The Philips patent discusses "doped barium-calcium-zirconium-titanate." Therefore the EEStor dielectric consists of sub-micron particles of calcined doped barium-calcium-zirconium-titanate coated in 10 nm aluminum oxide and in a plastic (PET) matrix. The Philips patent reports a permittivity of up to 33,500 at 1.8 V/micron for the material in bulk, 200 times lower than the voltages being used by EEStor. The Philips patent does not use small coated particles in a plastic matrix and it does not report the permittivity at the very high voltages that EEStor is using, but it reports the permittivity has "a low voltage-dependence."

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  briang1621
  

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  07/02/2008 03:54 PM

  longest list of comments ever

  I think this is the most comments I have ever seen on any TechReview post. Keep up the conversation, I like reading the comments they are interesting and insightful.
    Brian
  www.TechRd.com
    Commercialization
  Innovation Management 

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  twatson3
  

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  07/14/2008 01:50 PM

  Naysayers?

  To all of you in the know naysayers:
  
  Hey Wright Brothers, your nuts, man can't fly!
  
  Boy were those idiots wrong!!!
  
  Be careful what you slam as can't be done, or guess what people will call you in the future!!!

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  • 
    EaJ
    

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    07/23/2008 07:48 PM

    Re: Naysayers?

    good call twatson.
    
    EaJ
    http://www.eestorbatteries.com

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    • 
      annaglow
      

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      08/18/2008 07:25 PM

      Re: Naysayers?

      Sweet!  See thats perfect for the Goss132 EV.  I can buy the goss132, and exchange the batteries as I see fit!  Glad to know about this stuff.  Would love to order them both right now!! Finally, what a relief to know this exists, and goss exists.  Sounds like those 2 might have a great future together.  Consumers buying both goss132 & those batteries. 

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