LeydenJar
LeydenJar
Develops 100% pure silicon anodes for lithium-ion batteries, increasing energy density and reducing carbon footprint.
About
LeydenJar is a Dutch deep-tech company that pioneers 100% pure silicon anodes for lithium-ion batteries. Their proprietary technology significantly increases energy density, enables faster charging, and dramatically lowers the carbon footprint of battery production. Founded in 2016 as a spin-off from TNO, LeydenJar is headquartered in Leiden with operations in Eindhoven.
Key facts
- Website
- leyden-jar.com
- Headquarters
- Leiden, Netherlands
- Founded
- 2016
- Employees
- 87
- Total funding
- $54M (Series A)
- Valuation
- Private
- Business model
- B2B
- Tags
- Advanced MaterialsBattery Cell ComponentsCell ChemistryEnergy StorageCleantech
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 28 Jan 2026 | Series A | $8M | APG |
| 10 Sept 2025 | Series A | $25M | Energy Transition Partners, Catalyco, Extantia, Invest-NL |
| 1 Oct 2021 | Undisclosed round | $20M | Catalyco, LIOF, Invest-NL |
| 1 Jan 2020 | Undisclosed round | $2M | - |
Tech stack
Detected on leyden-jar.com, last scanned 17 Sept 2026. Run your own scan
- Frontend
- jQuery
- Analytics
- Google Analytics 4
- SEO
- Yoast SEO
- Support
- HubSpot
- CMS / Builders
- WordPress
- Hosting
- Vultr
- Email provider
- Microsoft 365
- Hiring platform
- Recruitee
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Frequently asked
How much funding has LeydenJar raised?
LeydenJar has raised a total of $54M in funding. The most recent round on record is Series A.
How many employees does LeydenJar have?
LeydenJar has approximately 87 people on record.