27 Comments(s). 1 Pages(s). Showing page 1. [ 1 ]

   #27. Posted at 06:28 PM on Sep 26th 2006 Edit   Reply

Good Topic. The US has said it's shooting for the Hydrogen economy and all. Read in a Scientific American once with something about Superconducting Electric wires that are surrounded in Liquid Hydrogen which acts as a coolant, so it superconducts. Neculear power plants are able to produce Electricity, or Hydorgen; both of which make up the cables components. This is not quite on topic I admit, but the Saturday Science Topic is doing well.
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   #25. Posted at 09:24 AM on Sep 25th 2006 Edit   Reply

[raised the hydrogen storage to about 600 usable watt-hours per litre]
So at what voltage to create the watts.
12 volts would be 50 amps for 1 hour or 25 amps for 2 hours or 10 amps for 5.
120 volts would be 5 amps for 1 hour.
So you could run a Five 120 volt 100 watt light bulbs for a little over a hour, on one liter of your favorite flavor of engery drink. Red Bull anyone? My favorite, Lemon Lime Gatorade!!
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   #5. Posted at 07:11 PM on Sep 23rd 2006 Edit   Reply

Wow, this may mean a lot to R/C hobbyists! This could also be significant to cars in the future. Who knows?
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   #3. Posted at 05:53 PM on Sep 23rd 2006 Edit   Reply

Even more energy density? If something in there loses it are we going to die now instead of just burns?
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   #22. Posted at 10:28 PM on Sep 24th 2006 Edit   Reply

it's a higher energy density, not power density. Power density is what is dangerous.
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   #1. Posted at 05:33 PM on Sep 23rd 2006, Edited at 05:33 PM on Sep 23rd 2006 Edit   Reply

I hope that the laptop manufacturers make this rechargeable, unlike the "refill" fuel cells that they want to sell us.
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   #16. Posted at 03:19 PM on Sep 24th 2006 Edit   Reply

Or, can you see yourself in the restroom, bleeding the water out of your laptop, in the jon? Or those big gaming enthusist, with wet spots on there pants coming off the plane? How about in Starbucks, asking the waitress for a napkin saying, My laptop just took a wee on the table.
Opps! Sorry, shouldn't of went there.
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   #15. Posted at 02:10 PM on Sep 24th 2006 Edit   Reply

I always thought of hydrogen cells as needing a gas escape valve. The batery that farts! I hope they sell rubber nozzels to change the sound ;D
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   #11. Posted at 09:06 PM on Sep 23rd 2006 Edit   Reply

Hmm. This seems less revolutionary after seeing this: http://en.wikipedia.org/wiki/Direct_borohydride_fuel_cell

They do seem to have made some big changes to the idea though to make it more practical.

At least the sodium borohydride does break down quickly to inert salts, although I bet it'd eat the paint off the side of your car by the fueling port.
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   #10. Posted at 09:00 PM on Sep 23rd 2006 Edit   Reply

The article's use of the word "recharged" is misleading. "Refueled" or refilled would be much more accurate and remove confusion with what most people consider recharging, if they really aren't considering a way to convert the waste back into the fuel by plugging it in. Of course they could also be using "easily" in a relative way; maybe they're just easier and safer for manufacturers to refill used cells and not at all practical for users to refill. If it was just water being broken into hydrogen and oxygen again, "recharging" might be possible, but when you add in having to get the boron oxide back out of the glycol that dissolved it, it makes it even more of a difficult thing to implement for a portable device.

"Toxic to microbes" would be an understatement if it was corrosive to anything, let alone explosively reactive. Of course, gas burns too, and is highly toxic, we still pump it at stations and let it spill all over the place. If this stuff is at least less harmful than gasoline, maybe it'd be an improvement.
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   #9. Posted at 08:18 PM on Sep 23rd 2006, Edited at 08:19 PM on Sep 23rd 2006 Edit   Reply

Sodium borohydride is used by chemists as a very strong reducing agent. Its a fallacy to call the compound harmless. For one thing it will react strongly if not explosively if exposed to an oxidixer. Leaked into the water table, as it surely will be if dispensed from a gas station; I imagine it would be quite toxic to microbes; maybe good, maybe bad. Sorry for the run on sentence.
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   #4. Posted at 06:04 PM on Sep 23rd 2006 Edit   Reply

Seems to be the best option for fuel cells.

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