4 ms·
Is this a big deal? This report mentions electrolyzers hitting 80-95% efficiency back in 2004: https://www.nrel.gov/docs/fy04osti/36705.pdf https://www.nrel.gov
by standeven 2y ago
Is this a big deal? This report mentions electrolyzers hitting 80-95% efficiency back in 2004: https://www.nrel.gov/docs/fy04osti/36705.pdf https://www.nrel.gov/docs/fy04osti/36705.pdf
The big H2 inefficiencies are still the compression, transportation, and conversion back to electricity.
- galangalalgol 2y agoThere have been %90+ efficient atmospheric co2 direct to propane synthesis in labs for a couple years now. Trying to transport hydrogen seems insane given that we already have direct propane fuel cells that are highly efficient too. And an infrastructure for holding and transporting propane if it isn't available on site.
- jacknews 2y agoInteresting, do you have any links to share, it seems like direct-propane synthesis (3-carbon chain) is less likely than methane. Is it some kind of sweet spot, or does direct butane work too? Something like direct butanol synthesis and fuel cells would be the ultimate I think, a liquid fuel that could be burned as jet fuel as well as in a fuel cell.
- galangalalgol 2y agohttps://news.ycombinator.com/item?id=37218727 https://news.ycombinator.com/item?id=37218727 Edit: my time frame is off, I'm bad at estimating elapsed time in general. So we are probably a ways off from commercialization.