Fluxnium
A US clean-technology startup developing fiber-based systems that extract dissolved uranium from seawater and process it into yellowcake for nuclear fuel.
Covered in 2 MetalsCost.com News Intelligence articles, most recently on September 26, 2026.
Coverage
A Second US Startup Is Now Racing to Pull Uranium From the Ocean
SuperCritical Materials has partnered with the University of Michigan to test whether its DOE-licensed seawater uranium adsorbent can survive real ocean deployment, becoming a second US startup chasing the same technology as Fluxnium.
Fluxnium Raises $7 Million to Pull Uranium From Seawater for US Nuclear Fuel
Fluxnium raised a $7 million seed round led by Congruent Ventures to commercialize fiber technology that passively extracts uranium from seawater, aiming at the US's heavy reliance on imported uranium.