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With adequate seals this is no more dangerous than existing chemical energy storage, such as gasoline and natural gas. The researchers state (in the paper itse
by isoprophlex 9y ago
With adequate seals this is no more dangerous than existing chemical energy storage, such as gasoline and natural gas.
The researchers state (in the paper itself) that they carefully control the charging voltage to avoid oxygen production in the same cell. Oxygen and hydrogen in the same device is dangerous, only hydrogen not so much.
- vvanders 9y agoUh, doesn't hydrogen have a history of leaking through most materials due to its small atomic size?
- lostapathy 9y agoAt which point it disperses very easily as it floats up. The key is just to keep it separate from pure oxygen, not keep it contained
- simonh 9y agoYes, but if you’re only storing it <24h to smooth out your daily power generation curve that shouldn’t be too much of a problem. It’s only really an issue if you’re storing it for weeks or more.
- taneq 9y agoYou're always storing some hydrogen even if the actual atoms are swapped out.
- simonh 9y agoOf course, but for short term storage the percentage loss should be small relative to other losses in the system. Lets say on each storage and recovery cycle over 24h I'm losing 10% of the stored energy from various losses each cycle, including 1% of the stored energy from Hydrogen loss. No big deal. Even though I'm losing 1% to hydrogen loss every 24h cycle, it's small relative to other losses per cycle. After many cycles it would still be a small fraction of overall losses. Conversely if my cycle time is 10 days for one storage and recovery cycle, at 1% hydrogen loss per 24h all of a sudden I'm now losing more from Hydrogen loss than all other losses combined. That's really bad.
- TeMPOraL 9y agoMoreover, reading this made me wonder about hydrogen embrittlement. Does this risk apply in this case?