24M Technologies has developed an electrolyte, called Eternalyte, designed to enable faster charging and maintain performance in low-temperature conditions.
Eternalyte has been engineered to significantly improve ionic conductivity, the rate at which ions move between a battery’s anode and cathode. Higher ionic conductivity can enable faster charging, and Eternalyte offers up to three times the conductivity of conventional electrolytes. This enhancement boosts charge rates without reducing energy density, regardless of the battery chemistry, 24M Technologies says, resulting in a charge rate four times higher than a conventional electrolyte.
In addition to its high ionic conductivity, Eternalyte operates effectively across a wide temperature range, leading to a significant improvement in battery performance in cold environments. While conventional batteries typically lose around 25% of their capacity at 0°C and the majority at much lower temperatures, Eternalyte retains nearly full capacity at 0°C and more than 80% at -40°C. This addresses the issue with EVs in winter and cold climates.
Naoki Ota, president and CEO at 24M Technologies, said, “24M’s Eternalyte electrolyte breakthrough solves some of the biggest challenges of lithium-ion batteries today. Rapid charge, superior low-temperature performance and great cycle life with lithium-metal and other high energy density chemistries, Eternalyte provides outstanding performance for applications ranging from EVs to consumer products. It paves the way for next-gen batteries, including lithium metal, with 1,600km driving range and years of reliable performance.”
Initially developed for lithium metal batteries, Eternalyte is also compatible with silicon and graphite-based batteries used in high-power and low-temperature applications. It supports rapid charging and long cycle life, and can be integrated into existing manufacturing processes as well as combined with 24M’s Impervio separator, to enhance battery safety and durability.
In related news, LEM has launched a new current sensing unit for battery management in electric vehicles (EVs)