Engineers develop an efficient process to make fuel from carbon dioxide::An efficient new process can convert carbon dioxide into formate, a material that can be used like hydrogen or methanol to power a fuel cell and generate electricity.

  • WaterWaiver@aussie.zone
    link
    fedilink
    English
    arrow-up
    47
    ·
    1 year ago

    Very misleading title. This is not an energy efficient process (what we need for energy storage), instead it has a high chemical yield.

    • SkybreakerEngineer@lemmy.world
      link
      fedilink
      English
      arrow-up
      35
      ·
      1 year ago

      When they say it’s efficient, they mean at not letting CO2 go, not in energy cost. Looks like step one is capturing it which is already energy intensive, and step 2 is reacting it with a strong base. So it takes a lot of stuff as input.

      And they did this on a lab bench, not at scale in a plant.

      • Alfenhose@feddit.dk
        link
        fedilink
        English
        arrow-up
        6
        ·
        1 year ago

        Yes, but if it could provide as an alternative to digging up oil and gass, and get the energy needed to make the transformation from sun, wind or other sustainable sources. It could lower the amount of new CO2 being put into the atmosphere as well as work as a way to store excess energy from wind and sun.

        • SomeoneSomewhere@lemmy.nz
          link
          fedilink
          English
          arrow-up
          3
          ·
          1 year ago

          Yeah, it would basically act as a battery except much better energy and power density, and faster ‘charging’.

          The downside is invariably that round trip energy efficiency (electricity in vs electricity out) is somewhere between ‘much worse’ and ‘terrible’.

  • RoyaltyInTraining@lemmy.world
    link
    fedilink
    English
    arrow-up
    12
    ·
    edit-2
    1 year ago

    So we’re gonna spend a whole bunch of energy to capture carbon, then use even more to turn it into fuel, and then just burn it again? Yea sorry, I am not convinced.

    Edit: Unless if course they propose it for grid balancing, like we talk about doing with hydrogen. In that case, I wanna know exact energy efficiency numbers and equipment cost.