Princeton Critical Minerals Raises $16M to Scale Lithium Production Technologies

Every EV battery pack starts life as saltwater. That's the part most of us never think about when we plug in at home or hunt for a Supercharger — but it's exactly where a Princeton University spinout is placing a $16 million bet.

Princeton Critical Minerals (PCM), a startup developing technologies to speed up and increase lithium yields from brine sources, announced it has raised $16 million in combined equity and non-dilutive funding. The company says the money will go toward meeting rising demand for the critical minerals behind energy storage, electrification, and AI infrastructure.

Who's Funding It

The financing breaks down into two parts. An $11 million Series A round was led by SOSV, with participation from the Grantham Foundation for the Protection of the Environment, Prospect Innovation, ASTOR Management AG, Black Forest Ventures, and a synergistic investment from the New Jersey Economic Development Authority through the New Jersey Innovation Evergreen fund.

On top of that, PCM recently secured more than $5 million in grant funding from the National Science Foundation, ARPA-E, and the NJEDA — a mix of federal and state backing that reflects how seriously domestic critical-mineral supply has been taken lately.

What the Technology Actually Does

Brine is the mineral-rich, subterranean or industrial saltwater that holds over half the world's lithium reserves, along with other critical minerals. Getting lithium out of it has traditionally been slow, land-hungry work.

PCM's platform, built on research from Princeton University, combines three pieces:

• Significant evaporation enhancement, to move brine through the process faster
• AI-enabled pond monitoring, to track what's happening across large evaporation operations
• Selective crystallization, to pull out the target minerals more cleanly

The goal is to help producers increase throughput while cutting energy use, chemical consumption, and operational complexity. Notably, the systems are designed to integrate with existing production operations rather than replace them.

Why Lithium Supply Is Under Pressure

Expanding production capacity has become one of the industry's biggest headaches. Conventional brine operations need large land areas, long development timelines, and extensive permitting and infrastructure buildout. Newer direct lithium extraction approaches have their own problems — downstream concentration costs, high energy consumption, and scale-up complexity.

PCM is positioning itself as the bridge between the two, improving both conventional and emerging workflows instead of betting on one.

"Lithium demand has moved far beyond the demand for electric vehicle (EV) batteries," said Sean Zheng, co-founder and CEO of PCM. "Battery storage, AI data centers, robotics, drones, and broader electrification are all converging on the same constrained critical mineral supply chain, lithium first and foremost. Energy storage is becoming foundational infrastructure for both the digital economy and energy security. Our novel technology system results in higher production, with lower cost in a shorter time."

Already Running in Chile

This isn't lab-bench stuff. PCM recently deployed its Lilypad™ technology in Chile, home to some of the world's largest lithium brine resources. By integrating the system directly into existing commercial evaporation ponds, the company moved from pilot phase into active production environments — an industrial-scale milestone rather than a demo.

Two additional technologies are being field-tested in Chile, focused on evaporation enhancement and AI-powered process optimization. Meanwhile, PCM is preparing commercial deployments in the U.S., leaning on increased government support for domestic critical-mineral infrastructure.

The new funding will be used to scale manufacturing, expand commercial deployments, build U.S.-based production capabilities, and keep advancing the core platform. Per the company, demand from customers — including the largest lithium producers — is growing.

What This Means If You Drive an EV

Nothing here changes your range this week. But battery cost and availability trace directly back to lithium supply, and Zheng's point about competition is the part worth remembering: EVs are no longer the only bidder at the table. Battery storage, AI data centers, robotics, and drones are all pulling from the same constrained pipeline.

More efficient extraction that works inside existing operations — instead of requiring a brand-new mine and a decade of permitting — is one of the more realistic paths to easing that squeeze. And if U.S.-based production capability comes online as planned, that's a shorter, less fragile supply chain feeding the packs in our cars.

In the meantime, the best thing you can do for the lithium already in your garage is treat it well: charge at a sane daily limit, use a properly rated home charger and adapters, and keep your cables and connectors in good condition. Battery chemistry that lasts longer is, in its own small way, lithium you never had to mine.