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

Business Wire

The Princeton University spinout will use the funding to expand sales and commercial deployments of its revolutionary brine-based lithium production platform in the U.S. and South America.

PRINCETON, N.J., August 20, 2026--Princeton Critical Minerals (PCM), a startup developing technologies to accelerate and increase lithium production yields from brine sources, has raised $16 million in combined equity and non-dilutive funding to address increasing demand for critical minerals used in energy storage, electrification, and AI infrastructure.

The financing includes an $11 million Series A round 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 New Jersey Economic Development Authority through the New Jersey Innovation Evergreen fund. The company has also recently secured more than $5 million in grant funding from the National Science Foundation, ARPA-E, and NJEDA.

Founded from research at Princeton University, PCM's technology platform improves the efficiency and scalability of lithium production from brine resources, the mineral-rich, subterranean or industrial saltwater that holds over half the world's lithium reserves and other critical minerals. Its systems combine significant evaporation enhancement, AI-enabled pond monitoring, and selective crystallization to help producers increase throughput while reducing energy use, chemical consumption, and operational complexity.

"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."

As global demand for lithium continues to accelerate, expanding production capacity has become one of the industry's largest challenges. Conventional brine operations require large land areas, long development timelines, and extensive permitting and infrastructure buildout. Emerging direct lithium extraction technologies, meanwhile, still struggle with downstream concentration costs, high energy consumption, and scale-up complexity.

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