You reallllly don't want to store H2 gas. On second thought, you realllllllllllly dont want to store H2 gas. Having worked some in welding (I considered doing

You reallllly don't want to store H2 gas. On second thought, you realllllllllllly dont want to store H2 gas. Having worked some in welding (I considered doing it instead of programming for a while), the problems with H2 are numerous. Firstly, it seeps out of any container you put it in. And I do mean any. Hell, even glass ampules in the chemistry have a hard time sealing H2. Another major issue, is that H2 does "fucky" things with metal. Ever heard of hydrogen embrittlement? (1) You have cracks in your metal. Well, hydrogen, being as tiny as it is, also can bond with the metal. Gets in there, makes cracks bigger. Creates weird metal acids (H2FeCO4) and they attack more metal. And if you're storing H2 gas in a regular container, you just made a time detonating fuse, and.... you don't know the time. But yeah, H2 gas creation may be easy, but storage is super hard and really dangerous. And unless you can get H2 in liquid form, it's pretty low power density compared to things like octane. (1) https://en.wikipedia.org/wiki/Hydrogen_embrittlement https://en.wikipedia.org/wiki/Hydrogen_embrittlement