A new European player has entered the solid-state battery landscape. Syensqo and Axens, with the support of the French public research institute IFP Energies Nouvelles (IFPEN), have announced the creation of Argylium, a joint venture dedicated to the development and production of advanced materials for all-solid-state batteries (ASSB).
The company officially began operations on January 1, 2026, with the ambition of building a fully integrated European value chain for next-generation battery technologies.
Hey! Did you know we have a Telegram channel? You can subscribe here to remain updated with all the last news from car and tech industries.
Leadership and technological focus
Argylium is led by Alessandro Chiovato as Chief Executive Officer and Valérie Buissette as Chief Technology Officer. The company focuses on the development of sulfide-based solid-state electrolytes (SSE), a critical component for fully solid-state batteries.
This technology is expected to enable energy densities of up to 500 Wh/kg between 2028 and 2030, while also offering higher safety levels and ultra-fast charging times of less than 10 minutes.
Research, Development and Industrial Capabilities
Argylium employs a team of more than 50 experts across two sites in France. Research, innovation and prototyping activities are based in Paris, while industrial development takes place in La Rochelle, where the company operates a pilot production unit.
According to its founders, Argylium is currently the only European company capable of developing and producing sulfide solid electrolytes at the ton scale, positioning it as a strategic player within Europe’s battery ecosystem.
Funding Strategy and Industrial Roadmap
To support its growth, Argylium plans to complete two funding rounds over the next three years. The capital raised will be used to expand large-scale pilot synthesis units, secure raw material supply, and enable industrial demonstrations of its technology.
The company’s industrial plan is structured into four phases:
- Qualification and financing of the technology
- Scaling production capacity and securing raw materials
- Construction of an industrial demonstration unit and first commercial sales
- Full industrialization reaching tens of thousands of tonnes per year, with licensing options for industrial partners
