Graphene-based Fuel Cell Membrane Could Extract Hydrogen Directly from Air

IEEE Spectrum ^ | December 2, 2014 | Dexter Johnson

[babygene]

“As a percentage, maybe, but in absolute millions of tons, it’s quite a bit.”

So wouldn’t you then have to put millions of tons of air through your filter to extract that “quite a bit”?

[Dad was my hero]

My point is that, even though we’re in a closed system and won’t be “creating” new water vapor you look over LA with the traffic it will be almost a constant fog and we’ll really hear how the hydrogen fuel cell was another bad idea.

[EEGator]

Cypress Hill.

[Ocoeeman]

It is to good to be true.

Every single one of these schemes works, for a while. Then the membrane gets poisoned and the cell stops working. You can burn out the poison but it takes more energy than it is worth to do it.

That is the real problem, not the straw-man setup here in the article.

If you can figure out how to build a system around it many solids can work here as a membrane but they only start running at 600C.

The Research and Development Degree of Difficulty, or RD3 is a “V” or 5 which combined with a Technology Readiness Level, or TRL of 2 means no.

[Ocoeeman]

BTW the math says this only has a 0.032% chance of working.

[EEGator]

[centurion316]

This is hugh and series. Unfortunately it’s not going anywhere as the EPA will put a stop to it.

[JRandomFreeper]

That's done all the time. It's easy to move air.

/johnny

[EEGator]

In all seriousness, the applications for graphene are numerous. Specifically in semi-conductor industry.

[stboz]

I hope people understand that if we start emitting h2o in large quantities THAT will be a big greenhouse gas issue!

We already do. Burning gasoline produces water.

[MrEdd]

It is my understanding that the water need not be released as a vapor.
Indeed, it is already pure so why waste purified water?

Cars will just have to pee.

[babygene]

“It’s easy to move air.”

Yea, but it takes energy to move it...

[TigersEye]

There is no evidence that a greenhouse effect even exists and, as I gave numerous references to, a lot of evidence that it doesn’t exist.

[Dad was my hero]

Wow! Now there's one I never heard before and when I grew up science wasn't politicized like now. If there was no greenhouse effect then within minutes of sunset temps would plummet, like the difference between the sunny side of the moon and the dark side. You might want to rethink that belief. And btw I've got probably as many anti-global warming bookmarks as anybody. And a good background in science. 😊

[Dad was my hero]

Wow! Now there's one I never heard before and when I grew up science wasn't politicized like now. If there was no greenhouse effect then within minutes of sunset temps would plummet, like the difference between the sunny side of the moon and the dark side. You might want to rethink that belief. And btw I've got probably as many anti-global warming bookmarks as anybody. And a good background in science. 😊

[Dad was my hero]

Sorry for double post still adapting to new iPad.

[TigersEye]

I provided several links to articles which explain why the physics of it refute greenhouse theory in its entirety.

The greenhouse effect is the idea that our atmosphere retains the heat that keeps the planet warm. It doesn't. Heat in the atmosphere easily escapes into space. A greenhouse is a closed system which isolates air inside the greenhouse from air outside the greenhouse. Our atmosphere is the opposite. All of our atmosphere is entirely open to space which is an entirely different medium.

What really heats our planet could more accurately be described as a Swimming Pool Effect. The sun heats the pool (the oceans) and the pool radiates heat to the atmosphere where it remains very temporarily.

There is also a weak Roman Bath House Effect that contributes to heating both the pool and the atmosphere. The molten core of the earth contributes heat to the oceans and land masses, which in turn heat the atmosphere, like the wood-fired heating system in a Roman bath house which heats the pool and surrounding stone of the floor from beneath.

[TigersEye]

FWIW I’m not politicizing the science and neither were the sources I provided.

[clearcarbon]

“You put a hydrogen-containing gas on one side, apply a small electric current, and collect pure hydrogen on the other side. This hydrogen can then be burned in a fuel cell.”

I'd like him to be a little more specific about what hydrogen containing gas molecules he's referring to. Hydrogen gas (H2), being lighter than air, doesn't spend a lot of time close to to the ground.

[SgtHooper]

Global warming issue. The owners will be taxed into the next century.