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It's the Batteries, Stupid!

Discussion in 'Battery Discussion' started by vfx, May 15, 2008.

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  1. stopcrazypp

    stopcrazypp Well-Known Member

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  2. Norbert

    Norbert TSLA will win

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    #242 Norbert, Nov 24, 2009
    Last edited: Nov 24, 2009
    One of the authors is K. M. Abraham, who has a webpage about Lithium Air here:

    Lithium Topics, Lithium Ion Batteries, Lithium Ion Electrolytes, Li-ion batteries, Li-ion battery

    He reported prototypes in 2006 already. It seems the authors consider these new prototypes a major step forward, however it is not clear to me why exactly. Because of the solid-state, or the measured cycle life? It seems that one of the major problems, the protection from humidity/water in the air, has not been solved yet. But any step forward, towards 1000 Wh/kg, is potentially hugely important, of course.

    EDIT: --------

    Here is a link to the announcement by University of Dayton Research Institute itself, which explains my question above, and what is important about the new protototypes:

    http://www.udri.udayton.edu/News/2009/Pages/BatteryBreakthrough!.aspx

    This appears to solve the previous problems Lithium-Air batteries were said to have with water in the air. (Hopefully). So that would be an important step forward.
     
  3. Tdave

    Tdave Member

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  4. Iz

    Iz EVs are here to stay

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    They must be quoting EV1 ranges based on lead-acid batteries. Even the NiMH EV1 had an EPA certified range of 140 miles/charge.


    To contact the reporter on this story Keiko Ujikane in Tokyo at [email protected]
     
  5. dpeilow

    dpeilow Moderator

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    I think they are quoting the mark1 LEAF range.
     
  6. mt2

    mt2 Member

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    Gah... I hate sensationalistic spin. 300km with what weight penalty? "Twice the capacity" implies that it would take a Roadster 700km or so, or more than 400km at half the weight. And what car, exactly, would it take 300km? A Mini? An SUV? The Aptera? How about the B52's "I got me a Chrysler that seats about twenty" car?

    Come on, guys, add a couple of words to the press release and tell us something meaningful.
     
  7. dpeilow

    dpeilow Moderator

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    Welcome to the electric future - Green cars

     
  8. Iz

    Iz EVs are here to stay

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    700 cells rather than 6831. This however implies the same range. How about 1400 cells rather than 6831. That would up the range to > 450 miles.
     
  9. bolosky

    bolosky Member

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    I read the article, and it says that the batteries are more "powerful" than the laptop cells. I'm guessing that the author of the article doesn't know the difference between energy and power, and that the claim about 700 cells is based on power, not energy. If that's the case, then the smaller battery would provide the same acceleration (power) but have smaller range (energy).
     
  10. Iz

    Iz EVs are here to stay

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    What range estimate do you think 700 cells would provide?
     
  11. vfx

    vfx Well-Known Member

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  12. johnr

    johnr Member

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    That's very good news - hopefully this new funding will make it possible for exciting experimental battery technologies such as lithium air to leave the lab and enter production within the next few years.
     
  13. vfx

    vfx Well-Known Member

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  14. Norbert

    Norbert TSLA will win

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  15. Norbert

    Norbert TSLA will win

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  16. JRP3

    JRP3 Hyperactive Member

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    Luckily since EV's are so much more efficient we don't really need batteries with the same energy density of gasoline.
     

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