Clhynn Develops Self-Sustaining Hydrogen Fuel Cell in Besançon for Green Transport

The Besançon-based startup Clhynn has created the first hydrogen fuel cell capable of generating its own hydrogen without a refueling station. This innovation aims to simplify and democratize hydrogen use for low-carbon mobility. Currently, over 95% of hydrogen is derived from fossil fuels, posing significant challenges for decarbonization. Clhynn's fuel cell uses a nickel membrane, making it cheaper and more environmentally friendly. The startup seeks to raise €6 million to establish a production unit, creating around 60 jobs by 2027.

Published Mar 26, 2026

Clhynn, a startup based in Besançon, has developed a revolutionary hydrogen fuel cell that generates its own hydrogen in situ, eliminating the need for refueling stations. This advancement addresses significant challenges in hydrogen production, where over 95% is currently sourced from fossil fuels.

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The fuel cell employs a cheaper nickel membrane instead of platinum, enhancing its environmental credentials. Clhynn aims to raise €6 million for a production facility, which is projected to create 60 jobs by 2027 in Bourgogne-Franche-Comté. The startup also plans to produce thousands of fuel cells annually and expand its reach globally, with existing production operations in Isle-sur-le-Doubs.