Sheffield’s AmpliSi targets graphite-free lithium-ion batteries with £2M raise
Sheffield-based startup AmpliSi has raised £2 million in fresh funding to accelerate the development of its silicon-based anode technology, aiming to phase out graphite from next-generation lithium‑ion batteries. The investment will support scaling of its materials platform, hiring specialist engineers and scientists, and advancing partnerships with cell manufacturers and automotive players.
Why killing graphite matters for battery performance
Conventional lithium‑ion batteries rely heavily on graphite anodes, a mature technology that is reaching its performance ceiling. Graphite limits how much energy a cell can store and how fast it can charge, while its supply chain is increasingly exposed to geopolitical risk and environmental concerns.
AmpliSi is developing engineered silicon anode materials, which can theoretically store up to ten times more lithium than graphite. By integrating silicon into existing cell manufacturing processes, the company aims to deliver higher energy density, faster charging times, and longer cycle life without forcing battery makers to redesign factories from scratch.
Funding to accelerate commercialisation
The £2 million round gives AmpliSi the resources to move from lab-scale validation towards pilot-scale production. The startup plans to demonstrate compatibility with standard gigafactory lines and to provide sample materials for electric vehicle and grid storage partners. The company is also expected to expand its intellectual property portfolio around silicon anode formulations and protective coatings that mitigate swelling and degradation.
Implications for EVs and energy storage
If successful, AmpliSi‘s technology could help cut battery costs per kilowatt-hour by enabling smaller, lighter packs with greater range. That would benefit electric vehicles, consumer electronics, and large-scale energy storage systems supporting renewable power. The move away from graphite could also diversify critical materials supply and reduce dependence on a limited number of producing countries.
With global demand for lithium‑ion batteries projected to surge over the next decade, investors are increasingly backing materials innovators that can unlock higher performance from existing chemistries. AmpliSi now joins a growing cluster of UK-based battery technology firms seeking to position the country as a key player in the clean energy transition.