Uhm... the problem sigh hydrogen is that, in its pure form, isn’t floating in the air (not enough to harvest it like that in any way). Plants already take the hydrogen out of water (freeing the oxygen) combining it with carbon. That’s how you get bio dieselZynerji wrote: ↑Sat Oct 17, 2020 2:32 pmThis is a bit of a broad jump, but made me think of hydrogen fuel cells while I was reading...
https://hackaday.com/2020/10/16/mutant- ... riculture/
If they can make corn that pulls nitrogen from the air, can anyone speculate on the possibility of a "bio-battery" that harnesses this "tech" to make a cell that pulls hydrogen from the air as well?
It's also difficult to store - being so light it tends to escape. IMO it is not the future of automotive - Honda gave all their research away so who's actually seriously working on it!!?
BEV too has finite rare earth resources but recycling technology too is making headway. Other technologies such as Honda's joint development of fluorine ion batteries with Nasa or sodium ion batteries hold promise for reduced dependence on rare earth metals. Biofuels will play a huge role in the future - oil and energy companies are heavily invested in algae and corn based fuels. Research into organisms that breakdown nuclear waste and materials also is underway. The future will require all of these efforts as well as the continuous replenishing of forests with mangroves to balance the carbon emissions. It's imperative that countries such as Brazil and China do their part.
In July 2001, Honda R&D Company, Ltd. and U.S.-based Honda R&D Americas, Inc. opened its first solar powered hydrogen production and fueling station. The station uses an array of photovoltaic (PV) cells to extract hydrogen from water via electrolysis.
The 'claim' here is that cracking is done during periods of excess production and stored to replace having a higher base load running.Rodak wrote: ↑Sun Oct 18, 2020 5:21 pmHydrogen fuel cells require, obviously, hydrogen. This is typically produced from natural gas (methane) by a steam cracking process that is itself energy intensive and significantly reduces the final efficiency of the fuel cell. There has been research on a direct methane fuel cell and some advances have been made; here's a link to a recent article:
https://www.sciencedaily.com/releases/2 ... 130939.htm
Actually bio-fuels eg bio-diesel and ethanol eliminate the CO2 emissions although not the tailpipe toxics.
You there are yet no bio diesel fuel cells. I think the only way still to oxidise a carbon-hydrogen is with a bang. And that produces NOx as a byproduct.Brake Horse Power wrote: ↑Tue Oct 20, 2020 9:14 am