Nepsilon

Nepsilon Ltd. is a British technology company headquartered in Cambridge, United Kingdom, that specialises in the development of nanoscale materials for energy storage and electronic devices. Founded in 2010 by a team of engineers from MIT and the University of Cambridge, the company quickly gained prominence for its innovative approach to lithium‑ion battery chemistry.

The company’s early portfolio included the Nepsilon NanoCathode, a composite material that increases energy density by 20 % compared with conventional cathodes. By 2015, Nepsilon had secured a series A funding round of £12 million from venture capital firms such as Accel and Atomico. Its technology has been licensed to several major automotive manufacturers for use in electric vehicle powertrains.

In addition to battery components, Nepsilon invests in research of quantum‑dot displays and flexible electronics. Its research facility in Cambridge hosts a collaboration with the UK Research Councils, focusing on surface‑functionalised nanoparticles for solar cells. A 2020 partnership with the European Space Agency enabled the deployment of the first Nepsilon‑based energy modules in a lunar exploration rover.

Despite its commercial successes, Nepsilon has faced criticism over waste management practices associated with nanoparticle production. Environmental NGOs have called for stricter regulation on the disposal of nano‑materials, and in 2022 the company announced a plan to implement a closed‑loop recycling system for its products.

Nepsilon continues to expand globally, with subsidiary offices in Singapore, Toronto, and Tel Aviv. The company’s marketing efforts prominently feature the Greek letter ν, emphasizing its commitment to “innovation beyond the visible.”