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Buckyballs Can Store Concentrated Hydrogen

Pickens brings news that researchers from Rice University have discovered that it's possible to store hydrogen inside buckyballs. Hydrogen can be an excellent power source, but it is notoriously difficult to store. The buckyballs can contain up to 8% of their weight in hydrogen, and they are strong enough to hold it at a density that rivals the center of Jupiter. "Using a computer model, Yakobson's research team has tracked the strength of each atomic bond in a buckyball and simulated what happened to the bonds as more hydrogen atoms were packed inside. Yakobson said the model promises to be particularly useful because it is scalable, that is it can calculate exactly how much hydrogen a buckyball of any given size can hold, and it can also tell scientists how overstuffed buckyballs burst open and release their cargo."

5 of 193 comments (clear)

  1. Exotic pressures by Dr.+Cody · · Score: 5, Interesting

    In the nuclear fuels field, we deal with really exotic temperatures and pressures in materials whose bulk properties might be only two or less orders of magnitude from standard temperature and pressure. Did you know that there are people sitting around, calculating the pressure of an individual helium atom in a crystal lattice? The pressures that arise put planetary cores to shame.

  2. Not true! They will be VERY convenient for a bit. by clonan · · Score: 3, Interesting

    While I haven't run the math, I think if you compress the hydrogen in Jupiter's core down to briefcase size you will find that it will keep going and form a nice little singularity....very easy to fit in a briefcase....shortly before it EATS the briefcase and then you...

    Back of envelope math:

    One earth mass will form a singularity at around 10 CC (or so I've heard)

    Jupiter's core is about 10 earth masses (or so I've heard)

    Ergo one Jupiter core will form a singularity at about 100 CC.

    A small briefcase will hold 100 CC plus a little extra.

    Only one questions remains...how will we get the core of Jupiter to LOOK like the report I was supposed to read last night?

  3. Re:8% weight is a bad way to put it by gm0e · · Score: 3, Interesting
    Like it or not, percent weight is the common metric to compare hydrogen storage methods. Around 6% by weight, the energy/mass ratio of molecular hydrogen is in the ballpark of gasoline, so 6% is the target you hear all the hydrogen storage scientists talking about. Of course what weight percent sweeps under the carpet are the important issues like stability after many charge/discharges, energy required per cycle, and the operating temperature range. Anybody claiming near or over 6% is cutting major corners on one of those areas. In this case, the buckyball bursting open to release H2 is not an easily reversible step so it will have a lifetime of exactly one discharge before the leftover carbon has to be reclaimed and re-packed with H2.

    As someone who does model calculations involving buckyballs myself, this is a very intriguing calculation. But if I showed this to my buddies down the hall who do fullerene chemistry, they would have a few questions about how they are supposed to pack that much H2 in a fullerene and then scale the process industrially.

  4. How about fusion instead of fuel cells... by clonan · · Score: 3, Interesting

    Everyone assumes that these will be used for fuel cells, but why not use them for fusion?

    I know one technique has been laser fusion. Target several lasers at one point and they reinforce each other. Then drop in a tiny sphere of fusion fuel surrounded by glass of plastic and the lasers cause the sphere to exploded both outward and in which increases the pressure enough to cause fusion.

    This concept has to be more efficient with a VERY high pressure fuel. So we give our packed buckyballs a charge and electromagnetically shoot them into the center of the lasers and POOF you have fusion..

    Just a thought, any comments?

  5. Re:Not true! They will be VERY convenient for a bi by TheHawke · · Score: 4, Interesting

    One thing is that theoretics will blow singularities out the window. One theory holds that Jupiter's core is a solid mass of crystallized carbon. Yep, you can guess what that is, Diamond. Another theory, with a more stable foundation, is that hydrogen at that pressure and temperature, becomes metallic. Essentially within your little buckyball, you would have a sphere of hydrogen metal. If your buckyball can handle > 100GPa,(over one million atmospheres) then the hydrogen atoms will undergo a phase change and become metallic.

    If this is practical and it's energy potential can be tapped, we'll have at our fingertips, an unlimited power source that won't kill you with radiation.

    http://en.wikipedia.org/wiki/Metallic_hydrogen

    --
    First rule of holes; When in one, stop digging.