Factorial, a leader in solid-state battery technology, has announced the launch of Solstice™, a groundbreaking solid-state battery poised to transform electric vehicle (EV) safety, performance, and sustainability. With energy densities reaching up to 450Wh/kg and a pioneering dry cathode for more efficient and sustainable production, Solstice™ integrates seamlessly with Factorial’s FEST® (Factorial Electrolyte System Technology), making it suitable for both automotive and consumer electronics applications. Developed in collaboration with Mercedes-Benz, this partnership underscores the commitment of both companies to innovation.
Solstice™ promises exceptional performance and safety, with the potential to boost EV range by up to 80%, reduce vehicle weight, and enhance efficiency. Its sulfide-based solid-state electrolyte addresses safety concerns associated with liquid electrolytes, achieving a EUCAR safety rating of 2 and maintaining stability at temperatures above 90°C. This advancement could also reduce the need for cooling systems, lowering overall costs.
Siyu Huang, CEO and co-founder of Factorial, remarked, “Solstice™ showcases our leadership in overcoming major challenges in EV adoption. It not only enhances range and performance but also aligns with our vision for a sustainable future. We’re pleased with the ongoing support from Mercedes-Benz, which confirms our ability to meet the needs of global automakers.”
Solstice™ also advances battery production sustainability through a novel dry coating process that eliminates hazardous solvents and energy-intensive steps common in traditional cathode production. By removing the formation process, a major energy consumer in lithium-ion battery manufacturing, Solstice™ reduces operating costs, energy use, and environmental impact.
Markus Schäfer, Chief Technology Officer at Mercedes-Benz Group AG, stated, “The Solstice™ battery marks a significant milestone in our collaboration with Factorial, aligning with Mercedes-Benz’s battery development strategy. Its improvements in energy density and safety will help us develop electric vehicles that set new benchmarks in range, cost, and performance.”
This announcement follows Factorial’s delivery of B-sample solid-state battery cells to Mercedes-Benz and builds on a 2021 agreement that led to a $200 million investment in 2022.
