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

Lithium Solid Oxygen battery Ju Li at MIT

Discussion in 'Battery Discussion' started by Ludus, Aug 14, 2016.

  1. Ludus

    Ludus Member

    Joined:
    May 1, 2013
    Messages:
    298
    Location:
    Michigan
    New Lithium–Oxygen Battery Is Scalable, Cheap and Quite Promising

    A paper in Nature Energy and some buzz on the web from a couple weeks ago.

    New battery tech announcements aren't usually worth much attention but this one seems to come from pretty credible sources and cover most of the bases as an apparently practical alternative. It's lithium-oxygen chemistry but in a sealed battery with the oxygen staying solid state trapped in matrix with no air exchange issues. The claim is for commercial version within a year.

    To my very limited understanding it seems like a variation that would fit with Gigafactory plans.
     
  2. JohnSnowNW

    JohnSnowNW Active Member

    Joined:
    Feb 13, 2015
    Messages:
    1,409
    Location:
    Minnesota
    Interesting, but the claim is a "practical prototype" within a year, there is no discussion on manufacturing cost, and 8% loss to heat still seems like a lot to me (though I am unsure of this exact metric in Tesla's current chemistry).
     
  3. Ludus

    Ludus Member

    Joined:
    May 1, 2013
    Messages:
    298
    Location:
    Michigan
    I don't know what the heat loss on charging is but lithium ion charging is usually described as 80-90% efficient so that seems in line. I doubt they have any detailed understanding of manufacturing but unlike most prior lithium air or lithium oxygen batteries, these seem suitable for sealed cylinder batteries without any other complications.

    If there's anything to it I'm sure Tesla will be all over it. Nobody would benefit more or be better able to do what was necessary to pivot to it.
     
  4. JohnSnowNW

    JohnSnowNW Active Member

    Joined:
    Feb 13, 2015
    Messages:
    1,409
    Location:
    Minnesota
    Yeah, but that's not cell charging efficiency, right?

    EDIT:

    Yeah, quick google search:

    Charging Lithium-Ion Batteries
     
  5. Ludus

    Ludus Member

    Joined:
    May 1, 2013
    Messages:
    298
    Location:
    Michigan
    I'm still unclear what the equivalent loss is for charging existing lithium ion batteries or how it compares to the 8% loss to heat cited. I came across references to 99% efficiency but also estimates that losses are about 10% but they might be talking about different measures.
     

Share This Page