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by EEGuy 4487 days ago
A little bit more info and clarification here [1].

What I find so clever is that the containment is about as simple as a "hot bucket", hot enough to keep the anode, electrolyte and cathode always molten. The are materials chosen so that their different densities keep them separated physically in operation. No membranes, easy scalability.

[1] http://spectrum.ieee.org/energywise/energy/the-smarter-grid/...