Stellantis N.V. and Zeta Energy Corp. announced a joint agreement to develop advanced lithium-sulfur batteries for electric vehicles. The partnership focuses on creating batteries with higher gravimetric energy density and volumetric energy density comparable to current lithium-ion technology.

Potential benefits of lithium-sulfur batteries

Lithium-sulfur batteries could significantly reduce battery weight while maintaining the same energy capacity as lithium-ion batteries. The lighter weight offers better range, handling, and performance. The technology may also improve fast-charging speed by up to 50%. Lithium-sulfur batteries are expected to cost less than half of current lithium-ion batteries per kWh.

Statements from Stellantis and Zeta Energy leaders

“Our collaboration with Zeta Energy is another step in helping advance our electrification strategy as we work to deliver clean, safe and affordable vehicles,” said Ned Curic, Stellantis chief engineering and technology officer. “Groundbreaking battery technologies like lithium-sulfur can support Stellantis’ commitment to carbon neutrality by 2038 while ensuring our customers enjoy optimal range, performance and affordability.”

“We are very excited to be working with Stellantis on this project,” said Tom Pilette, CEO of Zeta Energy. “The combination of Zeta Energy’s lithium-sulfur battery technology with Stellantis’ unrivaled expertise in innovation, global manufacturing and distribution can dramatically improve the performance and cost profile of electric vehicles while increasing the supply chain resiliency for batteries and EVs.”

Environmental and production considerations

Zeta Energy’s batteries use waste materials and methane, which significantly reduce CO2 emissions compared to current technologies. The technology is compatible with existing gigafactory infrastructure and supports a short, domestic supply chain in Europe or North America.

Future production plans for Stellantis Zeta lithium-sulfur batteries

The collaboration includes pre-production development and production planning. Stellantis plans to use lithium-sulfur batteries in its electric vehicles by 2030.

Cost and supply chain advantages

Lithium-sulfur technology offers higher performance at a lower cost than lithium-ion batteries. Sulfur, being widely available and affordable, cuts production expenses and supply chain risks. Zeta Energy’s process avoids using cobalt, graphite, manganese, or nickel, instead utilizing waste materials, methane, and unrefined sulfur.

Stellantis’ Dare Forward 2030 strategic plan

Stellantis aims to produce more than 75 battery electric vehicle models by 2030. The Dare Forward 2030 plan includes a dual-chemistry approach, innovative battery technologies, and a focus on affordable, high-performing EVs. This partnership with Zeta Energy aligns with those goals and strengthens Stellantis’ EV strategy.