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Metal-air battteries

Discussion in 'Prius, Hybrid, EV and Alt-Fuel News' started by Arnold, Nov 8, 2009.

  1. Arnold

    Arnold +AT+SR

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    Cody Friesen, 31

    Fluidic Energy
    Making cheaper, higher-energy batteries to store renewable energy


    Technology Review: Betting on a Metal-Air Battery Breakthrough

    Technology Review: TR35

    Within two years, Friesen hopes to be selling batteries that can hold twice as much energy as the lithium-ion batteries used in laptops and, increasingly, in electric cars. He calculates that his rechargeable metal-air batteries could ultimately hold 10 times as much energy as lithium-ion devices at a much lower cost.

    Now that would make a car make go as far as with a tank of gasoline !
     
    #1 Arnold, Nov 8, 2009
    1 person likes this.
  2. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Zinc-air batteries have the highest energy density of all, over the counter batteries. But they have such low power rates, they remain limited to very low power applications.

    I have been thinking along the lines of zinc-air into an LC circuit to provide recharge power for an ordinary NiMH or LiON cell. But that is something for another forums and another day.

    Bob Wilson
     
    #2 bwilson4web, Nov 8, 2009
  3. clett

    clett New Member

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    Great article!

    For comparison, the NiMH batteries in the Prius are 46 Wh/kg.

    High power/cycle life LiFePO4 or LiTitanate are around 100 Wh/kg.

    Standard Li-cobalt oxide (ie lithium ion used in laptops, Tesla EV etc) is around 200 Wh/kg.

    Polyplus have been working on the lithium-air couple with a theoretical energy density of 11,600 Wh/kg, of which they reckon 3,000 Wh/kg is a realistic practical target.
     
    #3 clett, Nov 9, 2009
  4. patsparks

    patsparks An Aussie perspective

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    Where will they find the electrolyte?

    Seriously, I hope they can make this technology work.
     
    #4 patsparks, Nov 9, 2009
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