Thethinnest, most durable proton exchange membranes ever made
Celadyne Dura and Celadyne Electra are drop-in replacements for the membrane at the heart of every fuel cell, electrolyzer, and flow battery in the world. Five times the durability. Seven times the current density. Eighty percent less iridium. Made in America.
Meet Dura.
The first ever low permeability bilayer proton exchange membrane that is durable, chemically impermeable, and conductive that handles and integrates like traditional perfluorosulfonic acid membranes.
Dura uses a composite approach to reduce gas permeation across the membrane while maintaining high conductivity and stability in order to enable thinner membranes with overall lower membrane resistance.
Dura cuts down hydrogen crossover to address the root cause of free radical formation in fuel cells while enhancing electrolyzer safety, especially at high pressures and low current densities.
Meet Electra.
Our advanced electrolyzer membrane maximizes efficiency and current density, dramatically reducing the cost of electrolytic hydrogen and unlocking the electrolyzer architectures needed for grid storage, ammonia, and synthetic fuel production.
Addressing both PFAS regulation and safety concerns, our thin membranes enable safe high pressure operation while drastically lowering operational and regulatory risks.
The proton exchange membrane is the substrate of electrochemistry — the same chemistry that goes into a fuel cell goes into an electrolyzer, a flow battery, a CO₂ reduction reactor, a lithium extraction system, and a rare earth separator. Hydrogen is the first big application. It is not the last.
We work closely with customers across fuel cells and electrolysis today, with active development programs in flow batteries, electrochemical separation, and electrochemical compression on the platform roadmap.
The world’s thinnest and most durable proton exchange membranes
Longer-lasting fuel cells
With our Dura™ membrane, fuel cells can now outlast diesel engines
More efficient electrolyzers
With our Electra™ membrane, green hydrogen now reaches cost parity with grey hydrogen
Less PFAS
Less dangerous ‘forever chemicals’, on the path toward EU regulation compliance
Celadyne membranes deliver wide-reaching benefits to both sides of the market
Reduces hydrogen crossover by more than 50%, solving the root cause of free radical formation and degradation issues
Integrates like conventional membranes. Compatible with existing catalyst
Created with off-the-shelf raw materials and manufacturing processes that are readily available and easy to scale
Low permeability makes electrolyzers much safer to operate by preventing dangerous hydrogen crossover
We’re inviting utilities, EPCs, and industry leaders to join us in co-creating the next generation of electrolyzers—designed for real-world impact in steel, concrete, and energy infrastructure. This is more than a pilot program. It’s your chance to share your needs, challenges, and insights—so we can build technology that truly works for you. Together, we’ll make sure they’re practical, powerful, and ready to drive your success. Ready to make your mark on the future of clean energy? Let’s talk.