Argylium plans industrialization of solid electrolytes by 2030

Solid-State Batteries Axens and Syensqo Combine Expertise

2026-01-22 From Michael Richter | Translated by AI 2 min Reading Time

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The new company Argylium aims to industrialize solid electrolytes by 2030. Axens is contributing its process expertise, Syensqo the pilot plant and research results.

A European initiative: The initiative for the industrialization of solid electrolytes for solid-state batteries.(Image: Syensqo) — A European initiative: The initiative for the industrialization of solid electrolytes for solid-state batteries.
(Image: Syensqo)

Axens (France) and Syensqo (Belgium) are founding Argylium, a new company in which they are pooling their expertise. The partners want to tackle a key bottleneck in battery technology: the industrial scaling of advanced solid electrolyte materials for solid-state batteries. The new company aims to take sulphide-based solid electrolytes from the pilot stage to market-ready production.

Argylium builds directly on Syensqo's preliminary work. The company has been operating a pilot plant for solid-state batteries in La Rochelle, France, for several years and can draw on more than a decade of research and material development in its laboratory in Aubervilliers near Paris. This technological basis is now to be further developed in the direction of industrial demonstration plants. The focus here is on accelerating the industrialization of sulphide solid electrolytes for so-called all-solid-state batteries (ASSB). The aim is to establish reproducible, scalable processes that enable the transition from laboratory and pilot quantities to industrial production volumes.

Research Institute Supports Collaboration

In addition to Syensqo, Axens contributes its many years of experience in process development and industrial scale-up. The company has more than 50 years of experience in the construction and operation of chemical industrial plants and is internationally established, particularly in the field of inorganic chemistry. The consortium is complemented by the French research institute IFP Energies nouvelles (IFPEN), which contributes in-depth expertise in inorganic chemistry and the processing of oxide and sulphide powder materials.

In the long term, the project aims to create the conditions for the commercial production of solid electrolytes by around 2030 and thus reduce Europe's dependence on non-European battery technology.

Solid-State Batteries as a Key Technology

Solid-state batteries are considered to be one of the most promising developments in today's lithium-ion systems. Replacing liquid electrolytes with solid materials promises several advantages. Firstly, significantly greater safety, as there are no flammable liquids. Secondly, a higher energy density and the potential for faster charging cycles.

Despite intensive research, widespread industrial use has often failed to date due to the complexity of the materials and the lack of scalability of the production processes. This is often the case with sulphide solid electrolytes, which offer high ionic conductivity but are challenging to produce and process.

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