• Hamartiogonic@sopuli.xyz
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            1 year ago

            Well, I’m still waiting for the graphene solar panels, cold fusion, flying cars, drone deliveries, metal nanoparticle engines, healing nano bots and what not.

            I wonder if we’re going to build a Dyson sphere before some of those other things become a reality.

            • SpaceNoodle@lemmy.world
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              1 year ago

              Drone deliveries seemed promising with Amazon, but the core company is so toxic that any tangible product that didn’t come from Lab126 is doomed. Zipline actually has a shot and is actively operating at a massive scale in Rwanda.

  • KinNectar@kbin.run
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    1 year ago

    @ooli tl/Dr "Photoncycle
    Brandtzaeg holds up a chalk-looking substance: “With this, you can store electricity 20 times as densely as in a lithium battery.”

    “We’re locking up the hydrogen molecules in a solid to basically fix them. We’re using a reversible, high-temperature fuel cell, so we’re assisting a fuel cell which both can produce hydrogen and electricity in the same cell,” he says.

    That means no need to cool the hydrogen down, making it non-flammable and giving it a higher density than an ion-lithium battery"

    • JohnDClay@sh.itjust.works
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      1 year ago

      I wonder what’s the volumetric energy density, historically that has been a bigger issue than gravimetric energy density.

      • KinNectar@kbin.run
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        1 year ago

        @JohnDClay

        Good question, this article is pretty fluffy, not a lot of hard data. Reads kind of like a fluffed up press release honestly.

      • Pelicanen@sopuli.xyz
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        1 year ago

        According to their site:

        A storage system of 3 m3 can store up to 10,000 kWh of energy

        So about 3.33 MWh per cubic meter, 3.33 kWh per liter, or 3.33 Wh per cubic centimeter.

        • JohnDClay@sh.itjust.works
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          1 year ago

          Hmm, if that’s correct, that’s even higher than liquid hydrogen, which would be really impressive.

          Energy densities

          Edit: Looks like their gravimetric energy density is 3.5kWh/kg

          Edit 2: here’s a comparison for batteries

          Battery Cell Energy Density

          • Pelicanen@sopuli.xyz
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            1 year ago

            Since it’s solid hydrogen I think it’s to be expected, however I didn’t see any information regarding energy losses which I imagine would be quite high when you have those kinds of cooling requirements.

            • abraxas@sh.itjust.works
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              1 year ago

              This is why I hate marketing pushes. If they’re a good-faith business, the efficiency needs to be within shooting distance of reasonable against costs. But as we learned from the artificial meat industry (that ultimately admitted we’ve already probably reached lifetime price/quality/scale limits from the methodologies they’re using) brutal honesty doesn’t get you investors.

      • abhibeckert@lemmy.world
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        1 year ago

        The article is light on details, but it claims they’re storing the hydrogen as a solid - not as a gas. Solids are generally about a thousand times more compact than a gas.

        That’s hardly a revolutionary thing - there are hydrogen powered cars on the road and those don’t use hydrogen as a gas either. Those cars don’t make much sense compared to lithium, but mostly only because there’s almost nowhere in the world you buy hydrogen for your car. That’s not an issue if you’re producing your own hydrogen at home.

        • First@programming.dev
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          1 year ago

          They don’t? When the Toyota hydrogen cars were introduced here around 2015, one of the issues were that a full tank of gas would dilute through the tank walls within a week. From the marketing material of the latest Toyota Mirai, it seems that they still use Hydrogen stored in gas form, boasting improvements in a 3-layer tank that is tested for 235% of the pressure that the gas is stored at, compared to 150% for regular gas containers.

            • First@programming.dev
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              1 year ago

              Yeah and what does that have to do with the Hydrogen being stored in gas form? The fuel cell converts it, it isn’t a storage mechanism. Hydrogen has a boiling point of -253C, are you saying that Hydrogen powered cars are fitted with a power hungry cryo chamber to cool down the fuel to a liquid form?

        • Hamartiogonic@sopuli.xyz
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          1 year ago

          Hydrogen really really doesn’t want to be solid, so doing that requires extremely low temperatures. Seems pretty cool, but inconvenient.

    • Hypx@kbin.social
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      1 year ago

      This is anti-hydrogen propaganda. It is basically a marketing spiel for the battery industry. In reality, hydrogen is going to power nearly all transportation, mainly because batteries are not a sustainable solution.

      And the notion that we can’t build enough renewable energy capacity is a classic climate change denial argument. People who say this are unknowingly (or sometimes knowingly) trying to get everyone back onto fossil fuels.

        • Hypx@kbin.social
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          1 year ago

          If you are totally honest, you’d admit that for a huge percentage of the transportation, we don’t have any real option other than hydrogen. That’s certainly the case for many types of commercial vehicles, ships and airplanes. But it is also true for a large percentage of passenger cars. Not everyone can accept a battery powered car in their lifestyle. So it is inevitable that transportation is part of what hydrogen is good for. And once we start using hydrogen for this, batteries quickly become the odd-man out. After all, why spend trillions on a highly destructive and arguably unsustainable technology that will have to be replaced anyways?

          The reason why it is a climate change denial tactic is that it completely ignores the fact that we can easily build enough renewable energy for pretty much whatever we want. It is thousands of times more plentiful than fossil fuels, and won’t run out either. So even if we accept your claim of needing 3x more capacity, that is still no problem. However, it won’t actually need that, since renewable energy requires vast amounts of energy storage to be viable. That storage is most easily done using hydrogen. So in reality, hydrogen is pretty fundamental to renewable energy altogether.

            • Hypx@kbin.social
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              1 year ago

              For millions of people, that is not an option. And I’m assuming you mean “BEVs” not electric vehicles. FCEVs are also electric vehicles. Furthermore, the claims of the BEV industry are not to be trusted. It is no different than citing the oil industry’s claim that BEVs cost the the equivalent of $17/gallon to drive.

              Battery swapping will explode the logistical and resource requirements of BEVs. It makes the problem even worse.

              Airplanes will probably use some combo of e-fuels or LH₂ setup. The latter is doable via a new type of airframe like a blended wing body.

              If speed is important, you’d support the rapid adoption of hydrogen, not oppose it. These are not credible arguments unless you do not actually believe in climate change.

              Renewable energy is leading to vast curtailment and excess production. That energy is pretty much wasted. Turning it into hydrogen will not cost that much money nor require that much more generation capacity.

              Large scale storage of hydrogen is done with natural occurring salt caverns. These cost far less than just about anything else ever conceived.

              Again, if the goal is to phase fossil fuels, you would go hard in favor of green hydrogen, alongside many other ideas. You would not oppose any green energy ideas.

                • Hypx@kbin.social
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                  1 year ago

                  A lot of those “agnostic” sources are secretly working for the BEV companies. There’s a lot of misinformation out there. Anyways, given that a fuel cell is vastly more efficient than a conventional ICE, there shouldn’t be an issue on efficiency. FCEVs are more than good enough. Anyone bringing this issue up as a problem is either confused or has an agenda. After all, FCEVs are also EVs.

                  Gas stations are much cheaper than battery swapping. In fact, that is the main argument in favor of FCEVs. Replacing existing gas stations with hydrogen stations is a much cheaper solution than putting up millions of charging stations, battery swapping stations, DC fast charging stations, etc.

                  I’m on Kbin FYI. It mostly works for my needs.

                  Excess green energy will likely flood the system. We will have an overabundance of all types of green energy, including hydrogen, in the long-run.

                  Critics of hydrogen are basically contradicting themselves. If you admit the need for energy storage in the form of hydrogen, you are also admitting the existence of very cheap hydrogen. That will be available for a variety of tasks. It will become the go-to solution for anything that needs a chemical fuel. If it is cheap enough for heating or steel production, it will be cheap enough for transportation solutions too.

                  Yes, you should read up on salt cavern storage: https://www.pv-magazine.com/2020/06/16/hydrogen-storage-in-salt-caverns/

    • roofuskit@lemmy.world
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      1 year ago

      There could not have put up a bigger sign saying, “I didn’t bother to read the article.”

      Otherwise I don’t disagree with most of what you’re claiming. But most of the problems you posed do not even apply to this relatively new system.

  • Obinice@lemmy.world
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    1 year ago

    We already have efficient enough solar panels to make our homes self sufficient, we just can’t afford to buy them.

    Even if we could, the power supply industry would see it happening, bribe and persuade the government to make it illegal to go off grid (I’m sure their solicitors would come up with “good” reasons that we should be stopped), to save their poor little shareholders.

    No way will they go down without a fight. Would I love to go off grid? Sure. If I had a few grand of spending money I could easily do it. But that’s just one person, no way they’d let the entire country do it.

    • tun@lemmy.world
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      1 year ago

      This is just storage. The article describes that the battery will use nearby solar panel for electricity.

    • azertyfun@sh.itjust.works
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      1 year ago

      There’s a very good reason you don’t want the entire country to go off-grid, and that net-metering is a plague that only serves as a wealth transfer from the poor to the rich.

      A large chunk of electric costs are fixed costs. Wiring, power station upkeep, more wiring, transformers, storm damage, etc. Whether you personally use twice or half as much power as the median household does not matter for this. So every net-metered kWh you send on the grid, everybody ELSE ends up ponying up the infrastructure costs for (nevermind the enormous production-side costs of fighting against the duck curve).
      A partial solution to make this fairer is therefore to either tax solar installations, use non-net-metering (with digital meters), or make grid connectivity a fixed cost in the electric bill.

      For people who are completely off-grid (meaning not only do they not pull any electricity from the grid ever, they are not connected AT ALL and therefore do not incur infrastructure cost on everyone else), it’s not as bad but sill not great because the grid operates on economies of scale. So in (semi-)urban areas it’s still a net loss for society when someone goes off-grid.

    • MasterBlaster@lemmy.world
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      We are 90% there already. In many states, solar panels and usage have extra taxes. Most solar installations are grid tied and electricity sale prices to the company are fixed at a small fraction of their sale prices from those companies. Worse, if power goes out, you can’t use solar to stay electrified because electricity would leak out and potentially electrocute nearby line men.

      • QueriesQueried@sh.itjust.works
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        1 year ago

        Worse, if power goes out, you can’t use solar to stay electrified because electricity would leak out and potentially electrocute nearby line men.

        Has this… really ever been true? We’ve had gas powered generators people can plug into their homes for a rather long time now, and they would be doing the exact same thing as solar installations.

        It depends on where you are mainly, but I do believe the kit that prevents what you describe, is functionally mandatory to have for solar. Not certain on that, and it definitely still depends on locale, but I haven’t seen any without that lockout in a loooonging time.

        • RaoulDook@lemmy.world
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          1 year ago

          Yes any professionally installed solar kit is going to have that liability prevention included with the design. That person is just spouting bullshit from some half-learned information.

          I built my own solar offgrid power station, and I didn’t install that protection, but it’s also a completely off the grid power source so it doesn’t matter. I installed a dedicated ground and breaker for it and it works as a standalone power source.

      • partial_accumen@lemmy.world
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        1 year ago

        Worse, if power goes out, you can’t use solar to stay electrified because electricity would leak out and potentially electrocute nearby line men.

        Your info is a bit out of date. With a single battery you can use nearly any solar system to generate and consume that energy during a grid outage. With a couple brands of gear (such as Enphase IQ8) you don’t even need any battery to generate and consume energy from solar during a grid outage. The term to look for for batteryless is called “self grid forming”.

  • mayonaise_met@feddit.nl
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    1 year ago

    I don’t want my house to be self-sufficient. I want my street and neighborhood to be self-sufficient. I already use my neighbors excess solar for reasonable prices.

    My city wants to be off natural gas in 2030 and my neighborhood is in the pilot to transition first. I don’t necessarily want a huge heat pump attached to my house, and I don’t want a huge energy storage solution in my small garden.

    There is city land around our housing block with plenty of room for a solution that can serve the whole street. I hope the city is going to propose something like that for us.

    • golli@lemm.ee
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      1 year ago

      Agreed. Not that i dislike people doing stuff by themself on a small scale, but i really wish the focus would be more on larger scale projects and giving people easy access to invest in those.

      Dont make everyone get a small solar panel and a tiny battery in their house. Let them invest in something like a large wind turbine in their area and maybe directly reap some of those benefits.

      • mayonaise_met@feddit.nl
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        1 year ago

        This will hopefully be something like district heating, so a central heat pump that distributes hot water. I don’t think hydrogen in on the table. They could add a flow battery to capture more solar energy locally but I don’t think that’ll be on the cards early on.

        But in reality it’ll probably be a heat pump per home and a big energy bill for us. Our street was built over 50 years ago when natural gas was plenty and cheap so insulation wasn’t much of a concern. We’ve added insulation under the floors and in the walls, but it’s never going to be as well insulated as a modern home.

  • Aceticon@lemmy.world
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    1 year ago

    They don’t actually say what the efficiency of it is, only that the inneficiency is mainly heat and “70% of home energy needs are for heat” which makes sense in Scandinavia but makes less and less sense the further South you are, plus it massivelly depends on being able to capture and use that heat (can you use it for cooking or only for environmental heating?).

    Ultimatelly efficiency and price are what makes almost all the difference.

    That said, I hope this turns out to be a proper solution: we definitelly need home energy storage solutions which have much higher energy density and lower cost per mWh that the ones we have now.

    • roofuskit@lemmy.world
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      1 year ago

      Their stated goal is literally to sell these in areas where homes need stored energy from solar to heat their homes.

      There is no single system that will solve all our energy problems.

  • photonic_sorcerer@lemmy.dbzer0.com
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    1 year ago

    You know what else is a solid form of hydrogen?

    Ice.

    I wish they went into more deatil about what kind of solid fuel cell system they’re working with - they say they’re trapping hydrogen molecules in some kind of molecular lattice, i.e. a crystal of some sort perhaps?

    Anyway, I hate patents but understand why you need them… They just seems to slow down progress.

    • ForgotAboutDre@lemmy.world
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      1 year ago

      Patents trade public disclosure of technology for a limited time exclusive use of the technology. Without them companies are less likely to publicly disclose any technologies they develop.

      • niisyth@lemmy.ca
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        1 year ago

        Never thought about it that way but it is an excellent policy. Thank You.

        Now if only we could get the goddamn Mickey Mouse in public domanin.

        • ForgotAboutDre@lemmy.world
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          The idea/spirit of patents is a good one.

          It enables generic medicine - as patented medicine needs to publicly disclose methods. It also allows the public to know what is in the patented product because it is public info.

          It also makes iteration easier, as everyone can build off and on top of the patent info.

          However, patent abuse is a real issue. Using patents to stifle others innovation and create monopolies. Also patents that come about from publicly funded research often give private companies exclusive rights to profit from work funded by the public.

          Mickey mouse is copyright, which is a different beast. It’s also good because it protects people producing easily copied work such as writing, music and images. However, the mouse has lobbied his way into making the copyright protection excessively long. It should be much shorter, 30 years since publication would be reasonable - it would be a tremendous victory if we got it down to 50.

    • Tvkan@feddit.de
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      1 year ago

      Always has been. In many ways, Lemmy resembles the Reddit of 10 years ago.