“Since at least the 1970s, electrochemists have cast their gazes upon the world’s vast, briny seas and wondered how they could harness the endless supply of hydrogen locked within. Though it was technically possible to grab the hydrogen by running an electrical current through the water, the reaction turned the salt in the water into the toxic and corrosive gas chlorine, which made commercializing such a process challenging.

But last year, a startup called Equatic made a breakthrough that not only solves the chlorine problem, but has the potential to deliver a two-for-one solution: commercial hydrogen production and carbon removal. With funding from the Department of Energy’s Advanced Research Projects Agency-Energy, or ARPA-E, the company moved swiftly to scale its innovation, called an “oxygen-selective anode,” from the lab to the factory. On Thursday, it announced it had started manufacturing the anodes at a facility in San Diego.”

From Heatmap.