UCLA researchers have developed a nickel-iron battery that recharges in seconds and lasts for 30 years.
  • frongt@lemmy.zipEnglish
    9·
    9 months ago

    the device achieves an excellent specific energy (47 W h kg−1) and superior specific power (18 kW kg−1)

    I’m not familiar with this stuff. How does that compare to popular lithium batteries?

    • dual_sport_dork 🐧🗡️@lemmy.worldEnglish
      81·
      9 months ago

      Poorly. According to a random Wikipedia query, commodity lithium ion is ~270 Wh per kilogram. So this is around 20% of that, according to the above.

      “Excellent” may be in comparison to other byzantine specialty battery chemistries, but lithium ion remains resolutely enthroned.

      • iopq@lemmy.worldEnglish
        4·
        9 months ago

        It might be cool for storing solar energy for your home, though. We don’t need to always carry the battery in every use case

      • solrize@lemmy.mlEnglish
        2·
        9 months ago

        Home storage generally uses LFP which is around 170 WH/kg. 270 is NMC which is used in stuff like mobile phones where the trade offs are different.

      • eleitl@lemmy.zipEnglish
        2·
        9 months ago

        Quite enough energy density and very good power density for stationary energy storage, with zero fire danger. Reasonably cheap, too.

    • Eczpurt@lemmy.worldEnglish
      1·
      9 months ago

      I looked around and found that lithium ion batteries will range from 100-270 Wh/kg and up to 10 kW/kg.

      So these particular batteries are sort of an improvement, less energy by weight but better power if I understand correctly. Definitely not an expert.