ePTFE Membrane - Donaldson

  • High vapor permeance and gas separation with Tetratex® ePTFE membrane
  • Thin membrane supporting high current density fuel cell operation
  • Independent membrane and coating selection for OEM optimization
  • Integrates into MEA structures and flat-sheet humidifiers

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ePTFE Membrane for MEA and Humidifier - Donaldson

  • The ePTFE Membrane for MEA and Humidifier from Donaldson is engineered to deliver high vapor permeance and effective gas separation for fuel cell applications.
  • The membrane integrates easily into fuel cell plates and flat-sheet humidifiers, supporting efficient fuel cell operation and system performance.
  • Donaldson’s Tetratex® ePTFE membrane is designed as a thin, high-performance material that helps support high current density requirements in fuel cell systems.
  • Its flexible design allows OEMs to specify the membrane independently of the coating, enabling selection of the optimal membrane and coating combination rather than relying on pre-set configurations.
  • This flexibility allows the membrane to support multiple fuel cell system components, including Membrane Electrode Assemblies (MEA) and humidifier structures, contributing to improved system efficiency and moisture management.

Key features

  • Tetratex® ePTFE membrane engineered for high vapor permeance and gas separation
  • Thin membrane design supporting high current density requirements
  • Enables independent membrane and coating selection for optimized OEM solutions
  • Easy integration into fuel cell plates and flat-sheet humidifiers

Application areas

  • Fuel Cells – acts as an ionomer skeleton for the Membrane Electrode Assembly (MEA), enhancing performance and efficiency
  • Humidifiers – provides structural support for PFSA coatings, enabling effective moisture management

Contact us

  • Since 1915, Donaldson's innovation has driven them to develop new technologies in order to solve the world's most complex filtration challenges. Interested? Please contact Donaldson by filling in the contact vendor form.
Donaldson Company, Inc.

As a global leader in the filtration industry, Donaldson Company helps solve some of the world's most complex filtration and contamination control challenges. Our filtration technologies and products are used every day in a variety of industries and environments, including aerospace, agriculture, construction, food and beverage, manufacturing, mining, power generation, transportation and many more. Our success comes from our 13,000+ employees, the support our customers receive, and more than 140 manufacturing and distribution centers on six continents.

Proven filtration, future redefined.

Our alternative power filtration solutions are designed to reduce dependence on fossil fuels, lower greenhouse gas emissions, and enable greener operations, all while maintaining top-tier productivity levels. For more than 20 years, Donaldson engineers and advanced materials experts have worked collaboratively with leading OEMs and Tier 1 / Tier 2 suppliers to develop customized solutions that meet specific fuel-cell application requirements in critical areas. Donaldson offers customized solutions that incorporate high efficiency media and carbon layers to effectively address the sources of fuel cell contamination.

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