The transition toward a fully electric automotive future has long been hindered by the inherent safety and energy density limits of standard lithium-ion batteries. However, a significant shift is underway as Ilika plc advances its Goliath large-format solid-state batteries (SSBs), designed specifically for the rigorous demands of electric vehicles (EVs) and high-performance cordless appliances. By successfully shipping its first 10Ah Goliath prototype cells at the end of 2025, the company has demonstrated a five-fold increase in capacity relative to its previous 2Ah versions, marking a pivotal moment in the commercialization of solid-state technology.
This innovation is not merely about capacity; it is defined by a "profound co-design" of materials and safety. Unlike conventional batteries, Goliath cells utilize ceramic-based lithium-ion technology that is inherently safe during manufacture and usage, offering higher thermal tolerance and a structure that is far easier to recycle. The engineering benefits translate directly to vehicle performance and economics: these batteries are estimated to reduce overall battery weight by 20% while potentially saving approximately £2,500 in manufacturing costs per electric vehicle. This combination of efficiency and cost-effectiveness has led to a 29% expansion of Ilika's evaluation pipeline, which now includes 27 companies ranging from global automotive OEMs to Tier 1 suppliers.
The broader implications of the Goliath project point toward a roadmap where solid-state power becomes the standard for the higher-performance automotive sector, where vehicle range commands a premium price. While this achievement represents an intermediate milestone, the focus for 2026 is already shifting toward refining the design based on customer feedback to move rapidly toward a minimum viable product (MVP) A-Sample. As Ilika continues to collaborate with partners like the UK Battery Industrialisation Centre (UKBIC), the progress of the Goliath cells suggests that the industry is finally overcoming the proprietary bottlenecks of traditional battery chemistry to deliver a safer, lighter, and more sustainable energy foundation.