Princeton NuEnergy and SK Battery America have expanded their collaboration on closed-loop lithium-ion battery recycling in the United States, the companies announced via a joint release carried by Batteries News.

The deal deepens an existing working relationship between the two firms. Princeton NuEnergy, a New Jersey-based recycling technology developer spun out of Princeton University, brings its low-temperature plasma-assisted direct-recycling process to the partnership. SK Battery America, the US manufacturing arm of South Korea's SK On, operates a cell plant in Commerce, Georgia, that supplies EV makers including Ford and Hyundai.

The expansion signals a shift from pilot-stage cooperation toward a broader commercial arrangement covering battery materials recovered from production scrap and end-of-life packs. Closed-loop recycling in this configuration means recovered cathode and other critical materials flow back into SK Battery America's cell manufacturing supply chain rather than into the open commodity market.

For SK Battery America, the arrangement addresses two pressures at once: the federal push to qualify EV and battery production for domestic-content incentives, and the volume of manufacturing scrap generated by a large-format cell plant ramping toward full output. Georgia's Commerce facility has been scaling production since 2022, and scrap from electrode coating, cell formation and quality-control rejects represents a continuous, domestically generated feedstock.

For Princeton NuEnergy, the expanded collaboration provides an anchor offtake and validation channel for a process the company has positioned as an alternative to conventional pyrometallurgical and hydrometallurgical routes. Direct recycling aims to recover cathode material in a form that can be reintroduced into cell production with less energy input and lower cost than breaking battery materials down to elemental salts and re-synthesizing them.

The announcement does not specify new tonnage targets, throughput figures or investment amounts tied to the expanded scope. Neither company has disclosed a timeline for commissioning additional processing capacity under the agreement, and no permit deadlines were included in the release.

The collaboration fits a broader pattern in the US battery recycling sector, where cell manufacturers are contracting directly with recyclers to secure closed-loop material flows. Production scrap is expected to dominate the American recycling feedstock mix for several years before end-of-life EV packs arrive at scale, which makes plant-adjacent scrap agreements the near-term commercial engine of the industry.

What happens next depends on execution milestones the companies have not yet published: contracted volumes, processing capacity commitments and any US Department of Energy or state-level support attached to the expanded partnership. Those figures will determine whether the arrangement scales into a material contributor to SK Battery America's domestic supply chain or remains a development-stage alliance.