24M Technologies Unveils Breakthrough Eternalyte Electrolyte Technology for Ultra-Fast Charging and Extreme Cold Resilience
24M Technologies, the MIT-born battery innovator, has unveiled Eternalyte – a next-generation electrolyte that marks a significant step forward in the evolution of electric vehicle battery performance. Designed to overcome long-standing barriers in charging speed and cold-weather operation, Eternalyte is set to make EVs far more practical and competitive in all climates.
The key lies in a dramatic increase in ionic conductivity – the rate at which ions flow between a battery’s anode and cathode. Eternalyte offers up to three times the conductivity of conventional electrolytes, enabling ultra-rapid charging with no compromise on energy density. This translates into charging speeds up to four times faster than current technologies.
In practice, that means an EV can gain over 300 kilometres of additional range in under four minutes when charging from 15 to 80 per cent state of charge – and crucially, without the need for megawatt-level infrastructure. This could dramatically reduce downtime for drivers and expand the accessibility of high-speed charging.
Beyond speed, Eternalyte also addresses one of the most critical shortcomings of today’s batteries: their poor performance in cold temperatures. While conventional lithium-ion batteries can lose around 25 per cent of their capacity at 0°C and almost all functionality in deeper cold, Eternalyte retains virtually full capacity at freezing and more than 80 per cent even at -40°C. For regions with harsh winters, this represents a meaningful leap forward in EV reliability.
Naoki Ota, President and CEO of 24M Technologies, called Eternalyte “a breakthrough that solves some of the biggest challenges of lithium-ion batteries today.” He highlighted not only the gains in charging speed and cold-weather resilience, but also the electrolyte’s compatibility with advanced chemistries. “With rapid charge, superior low-temperature performance and great cycle life – particularly with lithium metal – Eternalyte paves the way for batteries that deliver up to 1,600 kilometres of range and durability that lasts the lifetime of the vehicle.”
Although originally engineered for lithium-metal systems, Eternalyte is also well-suited to silicon and graphite-based batteries. Its adaptability makes it ideal for any application requiring high power output, fast charging and cold-weather performance. The electrolyte integrates easily into existing production lines, and when combined with 24M’s proprietary Impervio™ separator – designed to prevent thermal incidents – it contributes to safer and longer-lasting battery systems.
24M was founded in 2010 from MIT labs and has since established itself as a leader in battery architecture and materials science. Its portfolio includes several key innovations: Impervio, which enhances safety and recall targeting; 24M ETOP, a packaging method that boosts energy density; and LiForever, a chemistry-agnostic, semi-solid electrode platform that reduces production costs and enables the recycling of up to 98 per cent of a battery’s materials.
Working with global partners across energy storage and electric mobility, 24M continues to push the boundaries of what’s possible in battery technology. With Eternalyte, the company brings the industry closer to batteries that are not only faster and more durable, but genuinely ready for all climates and all seasons.
Photo/Source: stock.adobe.com – teksomolika
