theion

📍 Berlin, Germany🗓 Founded 2020👥 36 employees💰 Last funded Feb 2025
Chemical Manufacturing🌐 theion.de
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theion is a deep-tech company redefining energy storage with our crystalline lithium–sulfur battery technology — built to make energy lighter, cleaner, and more powerful. Our mission is to unlock the next generation of high-energy batteries for electric mobility, aviation, space, and portable applications — using sustainable, earth-abundant materials like sulfur and lithium. 🧪 Our breakthrough: By transforming elemental sulfur into a crystalline structure, we are targeting: ⚡ Up to 3× higher energy density than conventional lithium-ion batteries 🌍 1/3 of the CO₂ footprint 🔋 No nickel, cobalt, or rare metals theion’s patented process dramatically improves cycle life, safety, and manufacturability, creating a new class of energy storage ready for global scale. Our name theion — derived from the ancient Greek word for sulfur — reflects our vision: to power the future with the most abundant crystal on Earth.
3
Total investors
2
Early stage
1
Mid stage
0
Late stage
2020
Founded

Investors

3 investors
All
Early stage
Mid stage
Late stage
Investor geography2 countries
Germany
2
Norway
1
Investor activity2022–2025 · investors recorded per year
2022220251
Recent (last 2y)Earlier
Frequently asked questions
Who invested in theion?
theion has 3 investors on record on gritt.io, including 2 early-stage backers, 1 mid-stage.
When did theion last raise funding?
The most recent investment in theion recorded on gritt.io was in February 2025.
When was theion founded?
theion was founded in 2020.
What industry is theion in?
theion operates in Chemical Manufacturing. Find similar Chemical Manufacturing investors on gritt.io.
Where is theion based?
theion is headquartered in Berlin, Germany.