okay, so if we need a fixed volume X, and we have a reservoir of (1/2) X, then we only have to wait on the slow trickle of the remaining 1/2 instead of the full amount.
Plus, what do you think the H2 is for? Generally, we think about using it in a fuel cell. Which generates electricity. And the idea of using electricity to split out H2 in order to generate electricity, all in one place....
You're adding complexity, but I'm not sure you're actually improving on simpler approaches.
