LeydenJar Technologies

LeydenJar Technologies develops and manufactures silicon battery anodes, which increases the energy density of 50% lithium-ion batteries. The anodes are made of 100% silicon, which features an energy density of 1350 Wh/L, the highest energy density in the market. As a result, batteries equipped with LeydenJar anodes will allow 50% electric cars to drive further and increase the battery life of 50% smartphones.

Thanks to the use of silicon and a patented manufacturing process, LeydenJar anodes are more durable than conventional anodes. Compared to the manufacturing processes of current commercial batteries, the LeydenJar technology brings a reduction in CO²-emissions from 85%. Silicon is further abundant in our environment, while graphite, the anode material in current batteries, is often mined under questionable conditions in China.

Founded in 2016 by two experienced entrepreneurs as a spin-off from TNO, LeydenJar has more than 35 employees, a number that is doubling annually. A Series A investment round of 22 million euros was completed in 2021, which is the final step to market entry and first applications. Projects for the joint development of high energy density batteries are being undertaken with the leading companies in the electronics, electric transport and aerospace markets.

LeydenJar develops and manufactures pure silicon anodes that increase the energy density of Litihum-ion battery cells by 50%. Our anodes are composed of a unique 100% silicon structure that contain the market-highest energy density of 1,350 Wh/L. As a result, Li-ion batteries equipped with LeydenJar anodes will power electric cars that will drive 50% further and smartphones that will last 50% longer.

Thanks to the use of silicon and a patented production process, anodes of LeydenJar are more sustainable with a CO² reduction of 85% compared to the production process of current commercial batteries. Silicon is also widely available in Europe whereas the production of graphite - used for the current anodes - is concentrated in China.

LeydenJar was founded in 2016 by two experienced entrepreneurs as a spin-off from TNO, the largest Dutch applied research institute. LeydenJar has more than 35 employees, doubling in organization size every year. In 2021, LeydenJar closed a Series A investment round of €22M and is currently developing the first real-world applications for its silicon anode technologies. Co-development projects are running with some of the largest consumer electronics, automotive and e-flight companies in the world.

Photos from LeydenJar Technologies