hydrogen electrolysis - /sci/ (#16732001)

Anonymous
7/23/2025, 5:55:39 PM No.16732001
892191192
892191192
md5: e8d0923f0819b758a5a75ea3ceb4483a🔍
I remember some time ago this was discussed in 4chins, diy hydrogen production. It was constantly brought that "it wasn't efficient", but I went and threw some math at it, and it appeared to make sense. Mostly, considering you have electricity surplus, like having your own solar panels. And water wasn't worth gold prices. It was a straightforward way to store energy. Note I'm not comparing it to batteries, I haven't done the math in that regard, but hydrogen you can store as easily as storing gasoline, except it is gas. A simple gasoline or diesel engine can work with hydrogen, except with prolonged time, it'll rust. But that doesn't mean that there can't be engines specially designed for this purpose. Granted this is outside of the scope for most people.
All in all I'd like to see you /sci/entists throw math at this and see what happens.
Some people swear this is the ice's green replacement. What do you say?
Replies: >>16732002 >>16732087
Anonymous
7/23/2025, 5:56:09 PM No.16732002
>>16732001 (OP)
*
vid link
https://www.youtube.com/watch?v=RY08xO-_11w
Anonymous
7/23/2025, 7:14:42 PM No.16732060
We would drop liquid nitrogen in PET bottles.
This did result in some nice bangs.
Replies: >>16732067
Anonymous
7/23/2025, 7:22:01 PM No.16732067
>>16732060
just read that it needs to be subzero cold to be liquid, interesting
>This did result in some nice bangs.
like opening the bottle, pouring it in and closing the lid I assume? did it react with the air in the bottle in some kind of way I assume?
Replies: >>16732081
Anonymous
7/23/2025, 7:44:23 PM No.16732081
>>16732067
We had access to huge dewar bottles with liquid nitrogen in them.
At least a hundred liters plus.
Replies: >>16732085
Anonymous
7/23/2025, 7:49:39 PM No.16732085
>>16732081
sheeeeit, what did you all did with them?
Replies: >>16732096
Anonymous
7/23/2025, 7:53:22 PM No.16732087
>>16732001 (OP)
>hydrogen you can store as easily as storing gasoline, except it is gas
NO!
Hydrogen is notoriously difficult to store. The stuff will leak out of "airtight" containers like it's nothing. It's impossible to pressurize at any reasonable temperature. And it's constantly looking for any excuse to explode.

Hydrogen is evil stuff when you've got any meaningful volume on your hands.
Replies: >>16732090 >>16732092
Anonymous
7/23/2025, 7:55:36 PM No.16732090
>>16732087
peru is filled to the brim with cars that run on natural gas, they're the majority, because they have local gas production
Replies: >>16732092 >>16732102
Anonymous
7/23/2025, 7:56:37 PM No.16732092
>>16732090
>>16732087
* and gasoline is too expensive for them
Replies: >>16732102
Anonymous
7/23/2025, 8:02:38 PM No.16732096
>>16732085
We did a lot of experiments.
Fill a little bit of it in a regular PET bottle.
It will explode in a rather rough way.
Ad some weights and throw it into the Rhine.
It's a huge bang.
Replies: >>16732100
Anonymous
7/23/2025, 8:10:09 PM No.16732100
>>16732096
you fuckos had fun eh? nice nice
Anonymous
7/23/2025, 8:14:19 PM No.16732102
>>16732090
>>16732092
NatGas and hydrogen are two different things, anon.
Replies: >>16732118
Anonymous
7/23/2025, 8:34:49 PM No.16732118
>>16732102
both are gas elements in normal state, why would hydrogen gas have different behavior than natural gas?
Replies: >>16732144 >>16732207 >>16732239
Anonymous
7/23/2025, 9:02:48 PM No.16732144
>>16732118
>how can two completely different gasses have different sets of properties?
Not trying to be rude here but the existence of Liquefied Natural Gas (LNG) aside, hydrogen gas is a much smaller molecule than methane and so can much more easily seep through valves and fittings in tanks that are otherwise considered "airtight." It's also more volatile so static on your clothing is more likely to set it off.
Replies: >>16732157
Anonymous
7/23/2025, 9:16:06 PM No.16732157
>>16732144
I see, interesting. google is telling me it's rocket science and that it has to be presurized. However there's people inflating a normal balloon with it or storting it in some kind of DIY reconditioned standard gas tank
Replies: >>16732162
Anonymous
7/23/2025, 9:26:55 PM No.16732162
>>16732157
If you treat it with sufficient respect, you can do little science fair level demonstrations without killing yourself. This is pretty far removed from any sort of industrial application though.
Right now the primary realm for innovation in "green hydrogen" technology is storage and transport. There exists things like "Powerpaste" that store hydrogen in a chemical form from which it can easily be released. But economic viability is still very much in question.
Replies: >>16732173
Anonymous
7/23/2025, 9:41:06 PM No.16732173
>>16732162
thanks for being civil, it helps, when you discuss this shit with people in 4chans it would seem that an oil tycoon is paying them to hatepost their hardest with 0 evidence

I'll keep "researching" the topic, because it is interesting as fuck to me. A diy gas fuel from water and electricity. Fucking sick.
Replies: >>16732181
Anonymous
7/23/2025, 9:49:38 PM No.16732181
>>16732173
I'd recommend starting here:
https://en.wikipedia.org/wiki/Green_hydrogen
There's even chemical methods to produce the hydrogen so you don't necessarily need to use electricity to generate it.
Replies: >>16732185
Anonymous
7/23/2025, 9:54:37 PM No.16732185
>>16732181
thx pham
Anonymous
7/23/2025, 10:33:36 PM No.16732207
>>16732118
you're american right?
Replies: >>16732731
Anonymous
7/23/2025, 11:19:59 PM No.16732239
>>16732118
>both are gas elements in normal state
No, one is a diatomic element and one is a short chain hydrocarbon. the molar mass of methane is 8 times higher than hydrogen's, it's massive by contrast. Helium has a similar problem, it's so small it'll seep through things that would otherwise be airtight to larger molecules.
Replies: >>16732731
Anonymous
7/24/2025, 5:57:27 PM No.16732731
>>16732239
what's the cheapest and simplest way to store hydrogen, is it really that hard?
>>16732207
no I just didn't pay much attention in chemistry, but I get it now thanks to anons explaining itt, when I said gas I mean as in gas/liquid/solid, not whatever super technical other meaning it might have