theion
- Headquarters
- Berlin
- Employees
- 11–50
- Founded
- 2020
- Business Model
- B2B
- Website
- theion.de
- Total Funding
- $16.4M
- Last Round
- $16.4M Series AMar 2025
About
theion is a Berlin-based battery startup developing sulfur crystal batteries targeting triple the energy density at one-third the cost and CO₂ footprint of lithium-ion cells. The company's technology is based on sulfur's monoclinic gamma crystal structure and serves markets including EVs, aerospace, and stationary energy storage.
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