• Reygle@lemmy.world
    link
    fedilink
    English
    arrow-up
    81
    arrow-down
    6
    ·
    28 days ago

    We’ve been seeing claims like this for years and every time it’s been total bullshit. 99.9% chance it is this time as well, but enjoy the thought experiment.

    • GenosseFlosse@feddit.org
      link
      fedilink
      English
      arrow-up
      7
      ·
      27 days ago

      The problem is that batteries must meet a whole set of other criteria as well to be competitive, for example cost and energy density. If they are not mentioned, they are probably worse in that aspect. Which just means they are still useful for some applications, just maybe not for cars, laptops or cellphones.

      • eleitl@lemmy.zip
        link
        fedilink
        English
        arrow-up
        1
        ·
        27 days ago

        Abstract

        Downsizing metal nanoparticles into nanoclusters and single atoms represents a transformative approach to maximizing atom utilization efficiency for energy applications. Herein, a bovine serum albumin-templated synthetic strategy is developed to fabricate iron and nickel nanoclusters, which are subsequently hydrothermally composited with graphene oxide. Through KOH-catalyzed pyrolysis, the downsized metal nanoclusters and single atoms are embedded in a hierarchically porous protein/graphene-derived carbonaceous aerogel framework. The carbon-supported Fe subnanoclusters (FeSNC) as the negative electrode and Ni subnanoclusters (NiSNC) as the positive electrode exhibit remarkable specific capacitance (capacity) values of 373 F g−1 (93 mAh g−1) and 1125 F g−1 (101 mAh g−1) at 1.0 A g−1, respectively. Assembled into a supercapacitor-battery hybrid configuration, the device achieves an excellent specific energy (47 W h kg−1) and superior specific power (18 kW kg−1), while maintaining outstanding cycling stability of over 12 000 cycles. Moreover, FeSNCs displayed a significantly reduced oxygen evolution overpotential (η10 = 270 mV), outperforming the RuO2 benchmark (η10 = 328 mV). Molecular dynamics simulations, coupled with density functional theory calculations, offer insights into the dynamic behavior and electronic properties of these materials. This work underscores the immense potential of metallic subnanoclusters for advancing next-generation energy storage and conversion technologies.

    • A_Random_Idiot@lemmy.world
      link
      fedilink
      English
      arrow-up
      6
      arrow-down
      3
      ·
      edit-2
      27 days ago

      yep.

      SHould be a blanket ban on miraculous battery technology stories until they are actually in production and proven.

      Cause lets face it, if one of these miracle batteries using cheap, common materials with amazing capacity and longevity was real, it wouldnt take long for companies to jump on them.