Engineering360: "Further Along the Path to Hydrogen Fuel Cells"

Didn't we see something just a couple of weeks ago on another new hydrogen clean-up that utilized conversion of the hydrogen back to protons, ion exchange, then back conversion to clean hydrogen output? Whatever happened to that? I was reading there that the throughput flux was far higher than for palladium membrane separation, and the energetics offered low penalty, next to nil as it could be. At least, that is what I thought I was seeing, then I suddenly remembered this was for hydrogen isotope separation. Never mind, what I saw was a technique for hydrogen enrichment to deuterium and/or tritium, with very high selectivity and throughput.

This liquid metal idea has its own merits, kudos to the researchers.