Membranes

In electrochemical systems like fuel cells and electrolyzers, ion exchange membranes serve as solid electrolytes and physical separators. Positioned between the anode and cathode, they selectively transport specific ions to complete the electrochemical circuit while remaining impermeable to reactant gases and preventing electrical short-circuiting.

Membranes

Nafion™ Tubing

Tion5-W is a ~127 µm PFSA cation-exchange membrane for PEM electrolyzers, DMFCs, and biofuel cells—a durable, low-crossover alternative to Nafion 115.

An 80 µm ePTFE-reinforced PFSA membrane for high-pressure PEM electrolyzers and fuel cells, offering superior proton conductivity and durability.

A 50 µm reinforced hydrocarbon anion exchange membrane offering superior chemical stability, hydroxyl conductivity, and over 18,000 hours of life.

A 50 µm anion exchange membrane engineered with low plasticizer content for high-efficiency CO2 reduction and alkaline water electrolysis.

A 50–55 µm reinforced hydrocarbon anion exchange membrane offering high hydroxyl conductivity, alkaline durability, and over 15,000 hours of life.

A microporous ePTFE membrane providing high water barrier resistance, gas permeability, and IP68 protection for battery venting and gas separation.

Ultra-thin 15 µm ePTFE-reinforced AEM offering high alkaline stability (pH 1–14), low swelling, and top performance for fuel cells and electrolyzers.

30 µm ePTFE-reinforced PFSA PEM offering high current density, low fluoride release, and long operational life for fuel cells & electrolyzers.

260 µm PTFE fabric-reinforced PFSA cation exchange membrane with high tear strength and low swelling for electrolysis and chlor-alkali cells.

Semi-permeable fluoropolymer membrane tubing for selective water vapor transfer, sample gas drying, and humidification without gas loss.

130 µm PET-reinforced hydrocarbon CEM offering high selectivity, low resistance, and strong acidic/neutral stability for electrodialysis.

50 µm non-reinforced hydrocarbon CEM offering low resistance, high selectivity, and broad pH 1–14 stability for electrodialysis and desalination.

PP-reinforced hydrocarbon CEM (450–500 µm) offering high selectivity and mechanical stability for electrodialysis, electroplating, and desalination.

30 µm non-reinforced hydrocarbon CEM offering ultra-low resistance, high selectivity, and broad pH 1–14 stability for electrodialysis & acid recovery.

PEEK-reinforced hydrocarbon CEM with high OH⁻ blocking, low resistance, and broad pH 1–14 stability for electrodialysis & bipolar systems.

PK-reinforced hydrocarbon CEM with high OH⁻ blocking, high selectivity, and broad pH 0–14 stability for electrodialysis & alkaline concentration.

Primary Membrane Types & Operating Principles

PET-reinforced anion exchange membrane (130 µm) offering high selectivity, mechanical strength, and stable electrodialysis operation at pH 0–8.

Non-reinforced fluorinated AEM (50 µm) with low resistance, high vanadium-ion blocking, and stability in acidic or non-aqueous flow batteries.

Fluorinated non-reinforced AEM (30 µm) offering high chlorine resistance, oxidative stability, and low resistance for acidic and non-aqueous systems.

Non-reinforced anion exchange membrane (50 µm) featuring low resistance, high selectivity, and wide pH 1–14 stability for electrodialysis and CDI.

PP-reinforced heterogeneous AEM (450–500 µm) offering high mechanical stability, selectivity, and pH 1–10 resistance for electrodialysis and EDI.

PET-reinforced AEM (75 µm) featuring high acid transfer, low resistance, and stable diffusion dialysis operation across pH 1–9.

Non-reinforced AEM (50–60 µm) featuring low resistance, high acid transfer rates, and mechanical stability for diffusion dialysis of acidic solutions.

PK-reinforced AEM (130 µm) offering low resistance, high mechanical stability, and pH 0–14 durability for electrodialysis and alkaline electrolysis.

Non-reinforced microporous separator (20 µm) offering high caustic stability in 6–12 M KOH at up to 100 °C for alkaline water electrolysis.

PK-reinforced AEM (130 µm) offering high proton-blocking capability, mechanical stability, and wide pH 0–14 durability for electrodialysis.

Non-reinforced hydrocarbon AEM (30 µm) featuring low resistance, high selectivity, and pH 1–12 stability for organic redox-flow batteries.

Unreinforced PFSA cation exchange membrane (50 µm) featuring high proton conductivity and chemical stability for PEM fuel cells, electrolyzers, and VRFBs.

Thick unreinforced PFSA cation exchange membrane (170 µm) offering high durability and low crossover for PEM electrolyzers, DMFCs, and MFCs.

Non-reinforced hydrocarbon AEM (45–55 µm) with low resistance and high selectivity for electrodialysis, CDI, and alkaline fuel cells/electrolyzers.

Phosphoric acid-doped PBI membrane operating anhydrously at 120–180 °C with high CO tolerance and >20k hr durability for HT-PEM fuel cells.

Unreinforced PFSA cation exchange membrane (125 µm) providing high mechanical durability and low gas crossover for PEM water electrolyzers and DMFCs.

Non-reinforced poly(aryl piperidinium) AEM (40 µm) offering high OH⁻ conductivity and pH 1–14 stability for alkaline fuel cells and CO₂ electrolyzers.

PK-reinforced bipolar membrane (130–160 µm) offering low dissociation voltage (<1.2 V), >98% efficiency, and pH 1–14 stability for salt splitting.

PK-reinforced AEM (70–80 µm) offering low resistance, high selectivity, and pH 0–14 stability for electrodialysis and alkaline electrolysis.

PET-reinforced hydrocarbon AEM (70–80 µm) offering low resistance, high selectivity, and pH 0–8 stability for electrodialysis and desalination.

Non-reinforced poly(aryl piperidinium) AEM (80 µm) offering high OH⁻ conductivity (~150 mS/cm) and pH 1–14 stability for alkaline fuel cells and electrolyzers.

Non-reinforced hydrocarbon AEM (30 µm) featuring low resistance, high selectivity, and pH 1–14 stability for electrodialysis, CDI, and electrolysis.

Mechanically reinforced hydrocarbon AEM (40 µm) offering high OH⁻ conductivity and >12,000 hr durability at 80 °C for AEM electrolyzers and fuel cells.

Stretchable, chemical-resistant fluoropolymer mesh rated to 260 °C (500 °F), optimizing fluid mixing and mass transport across harsh chemical media.

Expanded, chemically inert fluoropolymer mesh rated to 260 °C, serving as an electrode separator or turbulence promoter in harsh flow cell systems.

Composite microporous separator (0.65 mm) with high-density fabric facing for concentrated alkaline water electrolyzers using KOH/NaOH feeds.

Rugged, chemically resistant polymer mesh for low-temperature mixing, turbulence promotion, and non-electrical electrode separation in flow cells.

Chemical-resistant polymer mesh rated to 88 °C, enhancing fluid mixing and mass transport across non-oxidizing acids, bases, and organic solvents.

Composite microporous separator (0.85 mm) with dual fabric facing for alkaline electrolyzers using concentrated KOH/NaOH electrolytes.

Mechanically reinforced, PFAS-free polynorbornene AEM (106 µm, IEC 3.5 meq/g) with high anion conductivity for alkaline water electrolyzers and fuel cells.

PFAS-free polynorbornene AEM (55 µm) with 3.5 meq/g IEC and high anion conductivity for alkaline water electrolyzers and fuel cells.

Thin, ePTFE-reinforced, Pt-doped fully fluorinated AEM (~20 µm) reducing gas crossover for pressurized alkaline fuel cells and electrolyzers.

ePTFE-reinforced, fully fluorinated AEM (~50 µm) offering high conductivity and strength for alkaline fuel cells and electrolyzers (<1 M alkali, ≤80 °C).

ePTFE-reinforced, Pt-doped fully fluorinated AEM (50 µm) reducing gas crossover for pressurized alkaline electrolyzers and fuel cells.

Thin ePTFE-reinforced fully fluorinated AEM (~20 µm) with high conductivity and stability for alkaline fuel cells and low-alkali systems (<1 M, ≤80 °C).

ePTFE-reinforced, Pt-doped fully fluorinated AEM (~100 µm) reducing gas crossover for pressurized alkaline electrolyzers and fuel cells (<1 M, ≤80 °C).

Thick ePTFE-reinforced fully fluorinated AEM (~100 µm) offering high strength and conductivity for alkaline fuel cells and electrolyzers (<1 M, ≤80 °C).

Mechanically reinforced PFSA membrane (~9 µm) providing low resistance and durability for high current density PEM fuel cells.

Thin, ePTFE-reinforced, Pt-doped PFSA membrane (~9 µm) reducing gas crossover for high current density PEM fuel cells.

Phosphoric acid-doped meta-PBI membrane (3–4 mil, PFAS-free) designed for intermediate-temperature PEM fuel cells and H₂ pumps (130–180 °C).

ePTFE-reinforced, Pt-doped PFSA membrane (~80 µm) reducing gas crossover for pressurized, high current density PEM water electrolyzers.

Mechanically reinforced PFSA membrane (~80 µm) offering long durability and high current density for robust PEM electrolyzer stacks.

Mechanically reinforced 6 um PFSA membrane with Pt recombination catalyst to reduce hydrogen crossover and enable high current density PEM fuel cells.

Mechanically reinforced 15 µm PFSA membrane with platinum recombination catalyst to mitigate gas crossover and boost durability in PEM fuel cells.

Mechanically reinforced 50 µm PFSA membrane with ePTFE matrix to reduce swelling and ensure long operational life in high-current PEM electrolyzers.

Mechanically reinforced 50 µm PFSA membrane with platinum recombination catalyst to mitigate gas crossover and boost durability in PEM electrolyzers.

Mechanically reinforced 15 µm PFSA membrane with an ePTFE matrix to mitigate swelling and enhance durability in high current density PEM fuel cells.

Mechanically reinforced 12 um PFSA membrane with a platinum recombination catalyst to mitigate gas crossover and enhance durability in PEM fuel cells.

Mechanically reinforced 12 µm PFSA membrane with an ePTFE matrix to mitigate swelling and enhance durability in high current density PEM fuel cells.

PET-reinforced cation exchange membrane offering low electrical resistance, high selectivity, and mechanical durability for electrodialysis processes.

Mechanically reinforced 110 µm PFSA membrane with an ePTFE matrix to mitigate swelling and ensure long operational life in high-power PEM electrolyzers.

Mechanically reinforced 110 µm PFSA membrane with platinum catalyst to suppress gas crossover and ensure durability in high-density PEM electrolyzers.

PEEK-reinforced cation exchange membrane engineered for high caustic stability, low resistance, and selective diffusion dialysis across pH 1 to 14.

PK-reinforced cation exchange membrane engineered with high chemical stability from pH 1 to 14 and low resistance for bipolar electrodialysis.

Non-reinforced fluorinated anion exchange membrane featuring low resistance, high acid stability, and vanadium ion blocking for redox flow batteries.

PK-reinforced perfluorosulfonic acid cation exchange membrane providing high oxidative stability, chlorine resistance, and strength for electrochemical use.

PK-reinforced perfluorosulfonic acid cation exchange membrane offering high oxidative stability, low resistance, and selectivity for flow batteries.