Cambridge, MA – 24M Technologies, a pioneering company revolutionizing battery design and manufacturing, has announced a breakthrough electrolyte technology named Eternalyte. This revolutionary solution promises to redefine electric vehicle (EV) charging speeds and vastly improve performance in extreme cold temperatures, addressing two of the most significant challenges facing lithium-ion batteries today.
Eternalyte represents a significant leap in ionic conductivity, the crucial metric defining the rate at which ions flow between a battery’s anode and cathode. With up to three times the ionic conductivity of standard electrolytes, Eternalyte dramatically increases a battery’s rate performance. Crucially, it achieves this enhancement without compromising energy density, regardless of the battery chemistry.
Rapid Range Addition Without Mega-Charging
This advanced ionic conductivity translates directly into exceptional charging speeds. Eternalyte technology delivers a charge rate four times higher than conventional electrolytes. For EV drivers, this means a staggering 300+ kilometers of additional range can be achieved in under four minutes, by charging from a 15% to 80% state of charge (SOC). A key advantage is that this ultra-fast charging capability does not require a mega-watt charging infrastructure, making it more accessible for widespread adoption.
Unparalleled Performance in Extreme Cold
Beyond rapid charging, Eternalyte’s high ionic conductivity and broad working temperature window bring a significant increase in battery performance within extreme cold environments. While conventional batteries typically lose about 25% of their capacity at 0°C and almost all capacity at much lower temperatures, 24M’s Eternalyte electrolyte retains essentially all capacity at 0°C. Even more remarkably, it maintains over 80% capacity at -40°C. This breakthrough effectively eliminates a major issue faced by today’s EVs in winter and cold climates, ensuring consistent vehicle range and reliability.
Paving the Way for Next-Gen Batteries
Naoki Ota, President and CEO at 24M Technologies, emphasized the transformative impact of the innovation. “24M’s Eternalyte electrolyte breakthrough solves some of the biggest challenges of lithium-ion batteries today,” Ota stated. He highlighted its benefits, including “rapid charge, superior low-temperature performance and great cycle life with lithium-metal and other high energy density chemistries.” Ota added that Eternalyte “provides outstanding performance for applications ranging from EVs to consumer products. It paves the way for next-gen batteries, including lithium metal, with 1,600-kilometer driving range and years of reliable performance.”
Versatile Integration for Enhanced Battery Solutions
Initially designed for lithium metal batteries, Eternalyte also serves as an ideal solution for silicon and graphite-based batteries. It enhances performance in applications that demand high power, low temperature capabilities, outstanding rapid charge rates, and longevity. The technology can be easily integrated into existing manufacturing processes. Furthermore, when used in conjunction with 24M’s Impervio™ separator, Eternalyte can deliver a fundamentally safer, long-lived battery solution, addressing critical concerns in battery development and deployment.
