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.
At a glance
- SuperCritical Materials, an Austin-based startup, is testing its uranium-adsorbent fiber technology with the University of Michigan to see if it can withstand industrial-scale marine deployment.
- The company holds an exclusive commercial licence to uranium-extraction technology developed at the US Department of Energy's Pacific Northwest National Laboratory, secured in July 2026.
- SuperCritical is now the second identifiable US startup pursuing seawater uranium extraction, alongside Fluxnium, which raised a $7 million seed round for a similar approach in September.
Background
The world's oceans hold an estimated 4-4.5 billion tonnes of dissolved uranium, roughly a thousand times more than all known land-based deposits, but at concentrations so low that no attempt to extract it has ever beaten the cost of conventional mining. Both SuperCritical and Fluxnium are trying to change that using fiber or adsorbent materials that passively soak up uranium as seawater flows past.
What happened
SuperCritical Materials has partnered with the University of Michigan to test whether its patented uranium-adsorbent technology can survive the mechanical stress of industrial-scale ocean deployment. Testing is taking place at the university's Aaron Friedman Marine Hydrodynamics Laboratory. It covers deployment and retrieval systems, how the material holds up against packing, waves and currents, and hydrodynamic testing under simulated marine conditions.
CEO Alexander Canon Bryan framed the test as the technology's real hurdle: "The question is no longer simply whether uranium can be extracted from seawater. The question is whether the adsorbent can be deployed, exposed and retrieved efficiently and repeatedly at industrial scale."
Why it happened
SuperCritical secured an exclusive commercial licence in July 2026 to uranium-adsorbent technology developed at the US Department of Energy's Pacific Northwest National Laboratory, built on decades of government-funded research. Founder Bryan built the company in 2024. Co-founder Dr. Gill, a marine-sciences researcher who has published on seawater uranium extraction for two decades, leads the technical program.
The University of Michigan partnership exists because lab-scale adsorption is a different problem from ocean-scale engineering. The material has to be deployed on real infrastructure, survive real waves and currents, and be retrieved and reused thousands of times without degrading. That is the part of the process that has stalled every prior seawater-uranium effort, and it is what this testing program is built to answer.
What it means
SuperCritical is now a second, separate US effort chasing the same prize as Fluxnium, which closed a $7 million seed round in September for a similar fiber technology, backed by different national laboratory ties and investors including nuclear utility Constellation Energy's venture arm. Two independently funded companies pursuing the same approach signals that investors see the economics as newly plausible, not just a repeat of decades of unsuccessful lab research.
Neither company has demonstrated costs that beat conventional uranium mining. For a US reactor fleet that imports more than 90% of its uranium, a working ocean-based supply would eventually reduce that exposure. But SuperCritical's own testing program is explicitly about engineering feasibility, not final proof the economics close.
Our read
Outlook: neutral. This is early-stage engineering testing with no near-term effect on uranium supply or pricing. Its significance is strategic, showing renewed investor interest in ocean-based uranium as a long-term diversification path, not a market-moving event today.
What to watch
- Results from the University of Michigan hydrodynamic and mechanical testing on SuperCritical's adsorbent.
- Any disclosed cost-per-pound estimates from either SuperCritical or Fluxnium as their pilot programs progress.
- Further national laboratory licensing deals or funding rounds in the seawater-uranium space.
For information only, not investment advice.
Uranium price in India
metalscost.com India reference price as of 2026-10-03.
Detailed analysis
Timeline
- 2026-07-14: SuperCritical Materials secures an exclusive commercial licence to DOE-developed uranium extraction technology.
- 2026-09-16: Fluxnium's $7 million seed round for competing seawater-uranium technology is first reported.
- 2026-09-23: SuperCritical announces its University of Michigan testing partnership for industrial-scale marine deployment.
Technical view
Price is trading above both its 20-period and 50-period moving averages, a bullish alignment.
Computed from metalscost.com's own stored price history.
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