Could new electrolytes transform EV batteries?

The novel batteries overcome common barriers involving safety, durability, and energy density

Spotted: EVs may be playing a key role in decarbonising road transport, but the vehicles still come with drawbacks. For one, the lithium-ion (li-ion) batteries they rely on are made using finite minerals and mining them is proving increasingly unsustainable. Plus, existing li-ion batteries are extremely flammable and can be extremely dangerous if they do ignite. This is where Feon Energy comes in.

The Massachusetts-based startup, which was spun out of Stanford University, has developed new electrolyte molecules for batteries that are more stable, energy-dense, and durable than existing alternatives. Lithium metal anodes are much more efficient than other anodes, but common electrolytes trigger unwanted chemical reactions with them, impacting both the battery’s safety and effectiveness. With Feon’s new electrolyte molecules, these unwanted reactions can be avoided.

The result is a battery that’s much safer, efficient, and long-lasting. According to the company, its novel lithium batteries are 70 per cent more energy dense while being 20 per cent cheaper to produce. The technology is also compatible with existing manufacturing methods and equipment, meaning it would be easy and low-cost to implement for producers.

As well as opening the door to li-metal batteries, Feon’s electrolyte design platform can be used to unlock other promising battery chemistries, including higher-voltage cathodes. In continuing to improve the lifespan of batteries, Feon could help to limit the production of new ones, easing pressure on overstretched supply chains and dwindling natural resources.

Feon Energy recently completed a seed funding round led by Fine Structure Ventures where it raised $6.1 million. With the new funds, the company plans to expand its research team, improve its molecule discovery platform, and boost its commercial engagement with key players in the automotive and battery industries.

Written By: Matilda Cox