Ilika Achieves Milestone in Solid-State Battery Development for EVs

UK-based Ilika has announced a significant advancement in the development of its solid-state Goliath batteries, reporting a fivefold increase in capacity for its 10 Ah cells since July. The milestone, referred to as the “D6 milestone,” marks a step closer to the commercialization of its innovative battery technology for electric vehicles (EVs).

Ilika is targeting a design freeze (D7 milestone) in the first quarter of 2025, paving the way for the release of 10 Ah prototype cells, dubbed P1.5 prototypes. These will build on the success of the earlier 2 Ah P1 prototypes, which have been under trial by a Tier 1 automotive supplier since July 2024. “Meeting our D6 development milestone on schedule is a key marker to ensure that we are progressing towards an MVP that meets or exceeds customer expectations,” said Ilika CEO Graeme Purdy.

The company plans to finalize testing on several batteries based on the D7 design by mid-2025, aiming to develop a Minimum Viable Product (MVP) by year-end. This MVP will form the foundation for revenue-generating licensing opportunities.

Ilika’s Goliath cells use an oxide solid electrolyte and a silicon anode, offering unique advantages over traditional lithium-ion batteries. These include higher energy and power density, faster charging times, and the ability to operate at elevated temperatures. The improved thermal resilience simplifies the battery management system, enhancing safety and enabling a higher cell-to-pack ratio.

In collaboration with Balance Batteries, Ilika is exploring the potential of Goliath cells in EV applications. Early modeling indicates that Goliath-based battery packs could reduce weight by up to 100 kilograms compared to conventional lithium-ion packs of equivalent energy content, particularly in SUVs.

Ilika is actively engaging with potential manufacturing partners to mitigate commercialization risks. Purdy emphasized the importance of partnerships in accelerating market readiness: “Today’s announcement is another proof point that Ilika’s technology is a step closer to market readiness and commerciality.”

As Ilika progresses toward its end-of-2025 MVP goal, the company is positioning itself as a leader in solid-state battery technology, potentially transforming the EV landscape with safer, lighter, and more efficient battery solutions.