LeydenJar, a Dutch deeptech company, has raised €23 million to scale its technology into full production at its Eindhoven facility, PlantOne.
The round includes €13 million in equity financing, led by Extantia and Invest-NL, to complete the final phase of PlantOne’s construction and begin operations in 2027. In addition, LeydenJar secured €10 million in customer funding from a leading US-based consumer electronics company to support the development and installation of key production equipment.
LeydenJar is developing Silyte™, the energy-dense pure silicon anode for lithium-ion batteries. Its 100 per cent silicon anodes are ultra-thin, fast-charging, and structurally stable thanks to a unique porous columnar design, while also cutting CO₂ emissions.
The technology increases energy density by up to 50 per cent, enables charging within minutes, and delivers reliable performance across hundreds of cycles.
According to Christian Rood, CEO and co-founder of LeydenJar, the funding represents a significant milestone for the company:
We’re now moving from breakthrough lab innovation to full-scale production. Our technology is already integrated into the roadmaps of some of the world’s most ambitious product developers and with PlantOne, we’ll be ready to deliver at scale.
The company is investing in expanding its commercial organisation and scaling operational infrastructure to support rising customer demand and prepare for full industrial deployment.
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