Producer
Tiamat Energy
French sodium-ion battery startup; spin-out from CNRS/Université de Picardie Jules Verne. Uses NASICON-type polyanionic cathode chemistry (distinct from Prussian White or layered oxides). Focus on high-power applications (industrial tools, grid frequency regulation). Part of RS2E network (French Na-ion research consortium). Backed by French government PIIEC program for European battery independence.
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Sodium-Ion Battery Cells
60%Battery Modules & Systems
25%Research Collaboration & Technology
15%
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Origin2022
Tiamat Energy SAS, founded in 2017 in Amiens (northern France) as a spin-off from the RS2E French battery research network and CNRS, represents France's commercial entry into sodium-ion battery technology — a chemistry that French academic researchers, particularly Jean-Marie Tarascon at Collège de France (one of the world's most cited battery scientists), have been instrumental in developing. Tiamat produces 18650-format cylindrical sodium-ion cells using a NASICON (sodium superionic conductor) polyanionic cathode chemistry — different from the layered oxide approach used by Faradion or the Prussian blue analog approach used by CATL. NASICON materials (Na3V2(PO4)3 family) have excellent structural stability and cycle life but lower energy density than layered oxides; they are particularly suited for high-rate and high-cycle applications like industrial power tools and grid frequency regulation. Tiamat was one of the first European companies to produce commercial sodium-ion cells in the standard 18650 format, enabling direct drop-in testing in applications designed for lithium-ion cells of the same form factor. The company's Amiens location reflects northern France's long industrial history (Amiens was a textile and manufacturing center) and proximity to the Picardie automotive supply chain — the same region where Renault has major operations and where the transition to EV battery supply chains is an acute regional economic concern.
Tiamat Energy SAS ↗