LeydenJar, a Dutch deep-tech company specializing in 100% pure silicon anodes for lithium-ion batteries, has secured new funding to advance its first full-scale production facility at PlantOne in Eindhoven. The company raised €13 million in equity financing, led by Extantia and Invest-NL, to complete construction and begin operations in 2027. In addition, LeydenJar obtained €10 million in customer funding from a major U.S. consumer electronics firm to develop and install essential production equipment.
LeydenJar’s proprietary silicon anode technology offers more than a 50% increase in energy density compared to traditional graphite-based anodes, enabling sub-12-minute charging times and reducing lifecycle CO₂ emissions by 85%. These performance gains support the development of lighter, more powerful batteries for applications ranging from AI-powered wearables to longer-range electric vehicles and electric aviation.
“This funding marks a pivotal moment for LeydenJar,” said Christian Rood, CEO and Co-founder of LeydenJar. “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.”
PlantOne will house custom-built plasma-enhanced chemical vapor deposition machines designed to produce large-format silicon anode rolls at scale. Once fully operational, the facility is expected to manufacture 125,000 m² per year of “Silyte,” the company’s 100% silicon anode material—enough to power approximately five million smartphone batteries or to fulfill the global annual demand for wireless earbuds.
“It’s inspiring to witness LeydenJar’s journey from promising technology to now becoming a production company with global ambitions up close. We believe in the potential of LeydenJar’s pure silicon anodes to transform the battery industry, and we’re particularly encouraged by the strong commercial traction the company is already seeing,” said Evelien Bijl, investment manager at Invest-NL.
Founded in 2016 as a spin-off from TNO, LeydenJar is headquartered in Leiden and operates across Europe, Asia, and the U.S. The PlantOne project represents a key milestone as the company scales its technology to support the next generation of high-performance, low-carbon batteries.
Source: LeydenJar Press Release
