LeydenJar Technologies develops 100% pure silicon anodes (Silyte) for lithium-ion batteries, enabling 50% higher energy density, faster charging, and lower CO2 emissions for applications in consumer electronics, wearables, and e-mobility. Founded as a spin-off from TNO in 2016, the Dutch deep-tech company is scaling production with Plant One in Eindhoven launching in 2027 and employs over 90 people. It has raised over €70M in funding and operates a U.S. entity in Arizona.