[kaliszad]

Sorry, no idea why you would undergo the inefficient and complex chemical reactions needed to produce carbon based fuels when there are easier alternatives that you don't have to burn but can use a fuel-cell for. E.g. the sodium cycle. Sodium (Na) can under circumstances outlined in the expired US patent US3730776A react with water (H2O) where there is no flame but instead flow of electrical current. You get a sodium hydroxide (NaOH) solution + a lot of energy + oxygen if you do it well, if you do it less well, you also get hydrogen and less energy.

The well known Castner Process can be used to split molten salt NaOH and get sodium, hydrogen and oxygen in the process. That does work under lower temperatures than the electrolysis of NaCl which is more efficient if you only look at this part of the cycle to get sodium. If you use sodium as fuel, the cycle as a whole is important for recycling. Sodium has much higher density than e.g. liquid hydrogen and does not require any cooling or pressure for storage. Also, it melts at about 100°C so you can pump it if you can keep it at about the temperature of boiling water. Yes, NaOH is caustic but neutralizes quickly in the nature which cannot be said for oil spills. You can keep NaOH in normal steel containers. For instance, it is common to use NaOH when cleaning clogged toilets. However you wouldn't pour gasoline down the drain.

You can read more about the sodium fuel cell and the context here: https://orgpad.com/s/5BfLP-cxj-7