TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Radical new battery could reduce phone charging to just one minute

Discussion in 'Battery Discussion' started by Insane, Apr 7, 2015.

  1. caddieo

    caddieo Member

    Joined:
    Mar 21, 2013
    Messages:
    877
    Location:
    Palm Coast, FL
  2. voyager

    voyager Member

    Joined:
    Apr 28, 2009
    Messages:
    405
    Location:
    Amsterdam, Netherlands
    The aluminum-ion cell isn't perfect (yet) as it can only produce about 2 volts, far less than the 3.6V that lithium-ion an muster. Plus aluminum cells only carry 40 watts of electricity per kilogram compared to lithium's 100 to 206 W/kg power density.

    Stanford's aluminum battery fully charges in just one minute

    Doesn't that mean that lightweight (base weight excl. batteries) electric cars are better 'positioned' to benefit from this development?
     
  3. Johan

    Johan Took a TSLA bear test. Came back negative.

    Joined:
    Feb 9, 2012
    Messages:
    6,890
    Location:
    Drammen, Norway
    That cool. Although I'd like to know how they would plan to push that much Power through a micro-USB og Lightning Connector ;)
     
  4. voyager

    voyager Member

    Joined:
    Apr 28, 2009
    Messages:
    405
    Location:
    Amsterdam, Netherlands
    #5 voyager, Apr 8, 2015
    Last edited: Apr 8, 2015
    The BIG-BIG bonus (not to use the term game changer) of course is.... Recharge faster than you can fill up!

    Btw Johan, that is a very cool-looking estate version of the Model S I noticed as your avatar!
     
  5. JRP3

    JRP3 Hyperactive Member

    Joined:
    Aug 20, 2007
    Messages:
    10,121
    Location:
    Central New York
    Tesla/Panasonic cells are at the 250Wh/kg level.

    General note, we now have three different threads discussing this same chemistry, I think all new unproven battery announcments should just get dumped into the "Batteries Stupid" thread until such time as a battery warrants more than a few lines of discussion.
     
  6. voyager

    voyager Member

    Joined:
    Apr 28, 2009
    Messages:
    405
    Location:
    Amsterdam, Netherlands
    I asked Stanford U. for confirmation.... The same hype as Lockheed Martin's nuclear fusion thing last year? More harmful to reputations than beneficial in terms of pitching.
     
  7. JRP3

    JRP3 Hyperactive Member

    Joined:
    Aug 20, 2007
    Messages:
    10,121
    Location:
    Central New York
    Also, it's Watt hour per kilogram, not Watts per kilogram, since it's measuring energy density.
     
  8. wcalvin

    wcalvin Member

    Joined:
    Apr 3, 2013
    Messages:
    309
    Location:
    Seattle WA USA
    Article in latest Nature:

    The Al battery pouch cell is mechanically bendable and foldable (Supplementary Video 1) owing to the flexibility of the electrode and separator materials. Further, we drilled through Al battery pouch cells during battery operation and observed no safety hazard, owing to the lack of flammability of the ionic liquid electrolyte in air (see Supplementary Video 2).


    An ultrafast rechargeable aluminium-ion battery



    Nature 520, 324–328 (16 April 2015) doi:10.1038/nature14340We have developed a new Al-ion battery using novel graphitic cathode materials with a stable cycling life up to 7,500 charge/discharge cycles without decay at ultrahigh current densities. The present Al/graphite battery can afford an energy density of ~40 W h kg[SUP]–1[/SUP] (comparable to lead–acid and Ni–MH batteries, with room for improvement by optimizing the graphitic electrodes and by developing other novel cathode materials) and a high power density, up to 3,000 W kg[SUP]–1[/SUP](similar to supercapacitors). We note that the energy/power densities were calculated on the basis of the measured ~65 mA h g[SUP]–1[/SUP] cathode capacity and the mass of active materials in electrodes and electrolyte. Such rechargeable Al ion batteries have the potential to be cost effective and safe, and to have high power density.
     
  9. tom66

    tom66 Member

    Joined:
    Dec 17, 2013
    Messages:
    622
    Location:
    United Kingdom
    A phone battery has a capacity of c.a. 1800mAh at 3.7V (~6.7Wh). Charging this in one minute would require a current of ~81 amps from the 5V USB port. Not going to happen w/out superconductors and massive advances in small-scale power electronic components.

    Every time I see these new "ultra-fast" charge batteries I wonder if they actually have consulted real engineers to see if these batteries could actually be used at the claimed rates.
     

Share This Page