A More Efficient Method for Harvesting Hydrogen
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- Опубликовано: 1 окт 2024
- University of Michigan Engineering researchers have developed a method for improving the efficiency of Solar Water Splitting, a process that replicates photosynthesis by using the sun to separate hydrogen from water. By harvesting previously wasted infrared light, the researchers were able to accelerate the solar water splitting process, increasing the amount of hydrogen they were able to harvest.
To test this method, they used a large lens to concentrate sunlight onto a semi-conductor submerged in a chamber full of water. The temperature in the chamber reaches a very warm 70 degrees Celsius (200 degrees Fahrenheit). The semiconductor is specifically designed to handle the high temperatures without degrading. Results show that this method has achieved 9.2% efficiency in converting water to hydrogen for indoor tests, and 6.1% for outdoor tests. This method shows major improvements over past methods, which were only able to achieve efficiencies less than 3%.
As hydrogen continues to become a desirable alternative to fossil fuels, this method could provide a clean, cheap and efficient method for producing hydrogen. The researchers are continuing to improve efficiency and prepare this method for large scale production.
Read more:
news.engin.umi...
Paper:
"Solar-to-hydrogen efficiency of more than 9% in photocatalytic water splitting"
Journal: Nature
January 3, 2023
www.nature.com...
DOI: 10.1038/s41586-022-05399-1
Zetian Mi is a Professor of Electrical Engineering and Computer Science at the University of Michigan.
mi.engin.umich...
Clarification:
The video states that "the catalyst is able to harvest the infrared light." Actually, the device uses infrared light to speed the reaction with heat, but the semiconductor does not harvest infrared light directly.
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Read more about this work:
news.engin.umich.edu/2023/01/cheap-sustainable-hydrogen-through-solar-power/
This research was published in Nature on January 4, 2023 in a paper titled, "Solar-to-hydrogen efficiency of more than 9% in photocatalytic water splitting"
doi.org/10.1038/s41586-022-05399-1
😂 waste of time..
Well this is useless... I'm trying to mine hydrogen to make water so this is pretty counterintuitive. Maybe ocean water could serve me.
Sunhydrogen (OTC) does something similar but I guess it's a scam company
Very under talked about.
This is next level..
I'd love to hear more updates about this discovery. Very cool!
There is an update already from Rice University (Houston, USA).
Trying to break the laws of physics? Using solar and oxidizing metals to aid in this silly theory is still a waste of time.. The energy required to produce hydrogen is greater than or near equal (only @100% efficiency) to the energy output of the produced hydrogen. No such thing as perpetual motion, or free energy.. It is impossible to run a vehicle from pure water. No big oil conspiracy here.. just the laws of physics.
And what is the total efficiency of typical hydrogen generation using electricity from solar panels for exemple? Why couldn't we do better with new, more direct, techniques?
In today's news we read about 20,8% (Rice University (Houston, USA), Hydrogen technology is moving lighting fast now that governments are investing Billions yearly.
Wonder why the "I am Michigan engineering" video was taken down?
Hi! Are you referring to the "This is Michigan Engineering" video from 2011?
@@MichiganEngineering yes, I believe that was the one !
It's still up, just unlisted because it is quite old. Enjoy: ruclips.net/video/e-p1QiRgxWo/видео.html
so this can happen only when sunny and at optimal times of the day??????
Is Sunhydrogen (HYSR) involved?
But the conversion back to electricity still wastes too much, not to mention the energy waste from long-distance transportation and then all the intricate maintenance required for extremely high-pressure hydrogen systems
I've about magnesium hydrure, MgH to create a paste that stabilizes hydrogen with no leaks and much lesser explosion risks (except with water, but that can lead to other type of engines too)
Look up Power Paste hydride. Stop spewing old news
It likely would be used for engines instead of electricity I’d image…
@@lilbitofeverything5801 Combustion engines are even more inefficient, 30% to 50% for generators, and usually as low as 10% for cars...
localized energy grids, and if systems are compact enough, home based off-grid solutions
Terrific work. Seems like in cars though, you only want to make enough hydrogen to charge a secondary Ev battery. Too much hydrogen is dangerous in car design. Too big an ev battery is dangerous in EV design. Yet medium/smaller batteries combined with ability to make just enough hydrogen onboard, that charges reserve batteries, makes sense for hybrid. Hydrogen hybrid EV's can offset each other's danger and likely reduce charging station network dependence.
This is really exciting…. If they’re currently getting ~9% solar efficiency, that’s almost at high of conversion for solar to electric panels. Which are often 11-15% and occasionally up to 20% according to a quick google search.
Where do I invest😂
why are we even still talking about that hydrogen bs
Pseudoscience! Mad scientist !
Ok. 1st... Captions would help. 2nd.. you heated water to 70c... And that helped.. collect higher grade hydrogen? You skipped right over the part telling " how to collect split hydrogen from water". Thanks. I know I need a syringe( I'll need more hydrogen that that) and a pyrex glass cylinder with what looks to be a penis in the roman numeral type of font. Is penis ever had fonts.
I can only see applications in direct use in the chemical industry. Impressive work though!