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Hydrogen Breakthroughs
https://gladerebooted.net/viewtopic.php?f=5&t=2619
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Author:  Lenas [ Mon Apr 12, 2010 7:32 pm ]
Post subject:  Hydrogen Breakthroughs

Breakthrough #1: MIT created a virus that will break apart water molecules to isolate hydrogen from the oxygen. This works at 400% efficiency compared to current techniques. Enzymes/viruses are amazing biological machines and require little energy to keep running. However... they need to harness this without somehow infecting the world's water supply with it. Not sure exactly under what conditions the virus can operate, but the potential is there.

Quote:
A team of researchers at MIT has just announced that they have successfully modified a virus to split apart molecules of water, paving the way for an efficient and non-energy intensive method of producing hydrogen fuel. The team engineered a common, harmless bacterial virus to assemble the components needed to crack apart a molecule of water, yielding a fourfold boost in efficiency over similar processes.

Hydrogen has a lot of potential as an alternative fuel – it can be used in fuel cells to trigger a chemical reaction that generates carbon-free electricity, and the only byproducts are waste heat and water. However as of right now, most methods of generating hydrogen are either extremely energy intensive or utilize methane and release greenhouse gases into the atmosphere.

Taking inspiration from the way that plants use sunlight to split water into hydrogen and oxygen, the MIT team led by Angela Belcher genetically engineered a virus called M13 to act as a sort of “scaffolding” structure that enables a remarkably efficient hydrogen-producing chemical reaction. When introduced to a catalyst (iridium oxide) and a biological pigment (zinc porphyrins), the viruses formed wire-like structures that efficiently split water into oxygen and hydrogen. The pigment captures light from the sun, and the catalyst splits the molecule.


Breakthrough #2: RPI created a new material, graphene, which stores hydrogen leaps and bounds more efficiently than any other material currently known, far surpassing the 2015 Department of Energy's target goal for storage capacity, a full 5 years ahead of schedule.
Quote:
Hydrogen storage has proven to be a significant bottleneck to the advancement and proliferation of fuel cell and hydrogen technologies in cars, trucks, and other applications. Rafiee has developed a new method for manufacturing and using graphene, an atom-thick sheet of carbon atoms arranged like a nanoscale chain-link fence, to store hydrogen. His solution is inexpensive and easy to produce.

With adviser and Rensselaer Professor Nikhil Koratkar, Rafiee used a combination of mechanical grinding, plasma treatment, and annealing to engineer the atomic structure of graphene to maximize its hydrogen storage capacity. This new graphene has exhibited a hydrogen storage capacity of 14 percent by weight at room temperature – far exceeding any other known material.

This 14-percent capacity surpasses the U.S. Department of Energy 2015 target of realizing a material with hydrogen storage capacity of 9 percent by weight at room temperature. Rafiee said his graphene is also one of the first known materials to surpass the Department of Energy’s 2010 target of 6 percent.

Rafiee’s graphene exhibits three critical attributes that result in its unique hydrogen storage capacity. The first is high surface area. Graphene’s unique structure, only one atom thick, means that each of its carbon atoms is exposed to the environment and, in turn, to the hydrogen gas. The second attribute is low density. Graphene has one of the highest surface area-per-unit masses in nature, far superior to even carbon nanotubes and fullerenes.


Looks like hydrogen has a chance, after all. Discuss.

Author:  Müs [ Mon Apr 12, 2010 8:03 pm ]
Post subject: 

For automobiles, Hydrogen is the future, not this electric crap they keep pushing.

Author:  Dash [ Tue Apr 13, 2010 8:09 am ]
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Pretty interesting. The biggest problem with Hydrogen afaik is/was the amount of energy needed to utilize it. Water destroying virus sounds kinda scary though...

Author:  Ladas [ Tue Apr 13, 2010 9:39 am ]
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Well, the virus needs the iridium oxide to break the molecules, which isn't exactly in high concentrations in normal water supplies.

Author:  Screeling [ Tue Apr 13, 2010 10:41 am ]
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Maybe not your water supply...

Author:  shuyung [ Tue Apr 13, 2010 10:44 am ]
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Plus, once it mutates and only needs sodium or something...

Author:  Dash [ Tue Apr 13, 2010 10:50 am ]
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MIT you arrogant bastards, you've killed us all!

Author:  Nevandal [ Wed Apr 14, 2010 11:39 am ]
Post subject:  Re:

Dash wrote:
MIT you arrogant bastards, you've killed us all!


Ahahahaha!


Yeah this is cool.

Author:  Numbuk [ Wed Apr 14, 2010 12:45 pm ]
Post subject:  Re: Hydrogen Breakthroughs

I look forward to the hydrogren-related breakthrough known as cold fusion.

Author:  Nevandal [ Wed Apr 14, 2010 1:09 pm ]
Post subject: 

Whoaaaaa.

Author:  Corolinth [ Thu Apr 15, 2010 11:25 am ]
Post subject:  Re: Hydrogen Breakthroughs

Numbuk wrote:
I look forward to the hydrogren-related breakthrough known as cold fusion.
You're joking, right?

Author:  Hopwin [ Thu Apr 15, 2010 12:34 pm ]
Post subject: 

Screw hydrogen production. If that virus works in salt-water imagine the possibility it presents for de-salizination. Cheap, clean drinking water everywhere just add a match.

Author:  Aizle [ Tue Apr 20, 2010 2:46 pm ]
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hydrogen is definately easier to impliment from an infrastructure standpoint. Cars can be converted to hydrogen relatively easily, and retooling for Detroit wouldn't be terrible.

IIRC, cars burning hydrogen actually exhaust cleaner air than what went it, making it actually a positive thing to go out joy riding.

Author:  Rorinthas [ Tue Apr 20, 2010 3:49 pm ]
Post subject:  Re: Hydrogen Breakthroughs

Sign me up

Hooking up a plug-in car to a coal and oil powered grid doesn't do squat for the environment, it just makes yuppies feel good about themselves. Not to mention the whole having to retrofit every parking space in america with pay outlets.

Author:  Lex Luthor [ Mon Apr 26, 2010 1:22 pm ]
Post subject:  Re:

Aizle wrote:
hydrogen is definately easier to impliment from an infrastructure standpoint. Cars can be converted to hydrogen relatively easily, and retooling for Detroit wouldn't be terrible.

IIRC, cars burning hydrogen actually exhaust cleaner air than what went it, making it actually a positive thing to go out joy riding.


Except that you're still wasting fuel. Furthermore the processes and overhead to make the hydrogen might not be clean.

Author:  Rorinthas [ Mon Apr 26, 2010 9:05 pm ]
Post subject:  Re: Hydrogen Breakthroughs

I think the OT showed an organic synthesis process to get the hydrogen that would be clean.

As far as wasting engergy if I'm paying for it it's mine to waste. However personally since I do have to pay for it, I am usally disinclined to do so.

Author:  Micheal [ Mon Apr 26, 2010 10:18 pm ]
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Ooh, I'm going to name my shiny new hydrogen fueled car 'The Hindenburg'

Author:  NephyrS [ Tue Apr 27, 2010 7:54 am ]
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As a note, without the baseline figure they're using, 400% increase is pretty meaningless.

Since most efficiencies are already very low, 400% increase probably still is well under a 50% efficiency, without knowing what benchmark they're using. It may well still be under 20%. Since they are using zinc porphyrins whose efficiency is usually under 4%, I'm guessing we're talking about a 16% overall efficiency or so.

Also, the virus STILL requires large amounts of iridium oxide catalyst- and that stuff is neither cheap, nor endless. And normally, lifetimes on the catalysts are around 2 weeks before they have to be replaced- points noted in the article. Also note that while it splits water, there is as yet no way to actually capture usable hydrogen from the process- it splits, but there is no controlled recombination that will release useful energy.

Either way, you will always need more energy to break water into hydrogen and oxygen than you will get from its recombination- which means you have to worry about the source of said energy.

Ideally, it would be solar energy, but our technology for solar cells is still quite poor- very environmentally damaging, and fairly expensive- and it is still reliant on non-renewable material sources. If we can perfect solar technology, then we will have 'clean' hydrogen fuel through a variety of means.

Until that happens, however, the environmental damage from creating hydrogen fuel in no way makes it clean.

Author:  Hopwin [ Tue Apr 27, 2010 9:23 pm ]
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Ironic since solar power is hydrogen power.

Author:  TheRiov [ Wed Apr 28, 2010 1:02 pm ]
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Hydrogen power is generally considered to be a chemical power source --molecular hydrogen (H2) combining with molecular Oxygen (O2) in a 2:1 ratio to yield H2O.

Solar power is a fusion process involving a number of fusion reactions yielding Deuterium, Tritium and finally Helium (at least in our sun for now, later on Helium 'burning' will take place.)

it would be correct to refer to Hydrogen power for the chemical process because we're talking about Hydrogen molocules.

It would generally be considered pretty awkdward (if not outright incorrect) to refer to solar power as Hydrogen power as single protons are usually not referred to as hydrogen--the sun is a plasma, thus the electrons have been largely stripped from the component nuclei.

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