H2 fuel cell cooling circuit
press release

TECHNYL PURE: A Game-Changer in Hydrogen Fuel Cell Cooling Circuit Performance

  • DOMO demonstrates TECHNYL® polyamides effectively limit ion migration, helping to reduce the conductivity of fuel coolant
  • TECHNYL® PURE outperforms reference materials in H2 fuel cell cooling circuit performance, resulting in a sixfold increase in the ion filter lifetime

Ghent, 13.02.2024 - DOMO Chemicals, a global leader in the production of high-quality engineered materials and sustainable solutions, has made a landmark breakthrough with its TECHNYL® polyamides, drastically reducing coolant conductivity in hydrogen fuel cell stacks. This innovation, supported by comprehensive testing, establishes TECHNYL® as the premier choice for enhancing fuel cell stack performance and durability.

Historically, polyamides (PA) were not considered optimal for cooling circuits in hydrogen fuel cell technology due to concerns about ion leaching and increased coolant conductivity. However, DOMO's latest research overturns these assumptions, demonstrating that TECHNYL® polyamides effectively limit ion migration, thereby maintaining lower coolant conductivity and extending system longevity.

"Our research reveals the 'polyamide paradox,'" says Maarten Veevaete, Director Application Center at DOMO.

"Contrary to previous beliefs, TECHNYL® grades have a positive impact on the fuel cell cooling circuit. Their chemical interaction with the coolant reduces its conductivity, significantly enhancing system longevity and leading to a five to sixfold increase in the lifetime of ion filters. This effectively reduces maintenance requirements and associated costs," adds Maarten Veevaete.

TECHNYL® PURE, a top-tier formulation designed to minimize ion leaching, consistently maintains lower coolant conductivity from the outset. This innovative material surpasses traditional solutions*, offering a more efficient and durable option for hydrogen fuel cell cooling loops. ** 

The TECHNYL® range for the fuel cell cooling circuit caters to specific customer requirements, offering a variety of grades including PA6 and PA66-based alternatives alongside the flagship TECHNYL® PURE. Discover the optimal solution for enhancing your hydrogen fuel cell cooling loop's performance and longevity by contacting the TECHNYL® team. 

* Data based on internal research conducted by DOMO, available upon request.

** Calculation based on a commercial vehicle lifetime of 500,000 km, with a filter change every 90,000 km at a battery operating temperature of around 80°C.


©DOMO Chemicals - Data based on internal tests carried out at DOMO’s laboratories, reflecting the current state of knowledge.


The press release



DOMO's TECHNYL® PURE: A Game-Changer in Hydrogen Fuel Cell Cooling Circuit Performance
- pdf (182.38 kb)



TECHNYL® PURE de DOMO : Un atout pour optimiser la performance du circuit de refroidissement des piles à combustible
- pdf (137.94 kb)



TECHNYL® PURE von DOMO: Eine bahnbrechende Neuerung im Kühlmittelkreislauf von Wasserstoff-Brennstoffzellen
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TECHNYL® PURE di DOMO cambia le regole del gioco all’interno del circuito di raffreddamento delle celle a combustibile a idrogeno
- pdf (162.35 kb)



Contact us for any media or public relations questions

Marc Chalupsky

Marc Chalupsky

Manager External and Online Communications
Elisabetta Testa

Elisabetta Testa

Global Marketing Communications Manager
Richard Ratter

Richard Ratter

Communications Manager
Even Zhang

Even Zhang

Marketing Communication Manager Asia