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.
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
Cation Exchange Membranes (CEM / PEM): Transport positively charged ions (H+) via sulfonic acid groups (−SO3−). Offer high conductivity and chemical durability, but carry higher material costs.
Anion Exchange Membranes (AEM): Conduct negatively charged hydroxide ions (OH−). Enable low-cost, PGM-free catalysts, but have lower conductivity and sensitivity to CO2.
Bipolar Membranes: Combine a CEM and an AEM layer to split water into H+ and OH− ions at the junction under reverse bias
Chlor-Alkali Membranes: Reinforced barriers optimized to transport Na+ while preventing hydroxyl back-migration during brine electrolysis.
What is the Difference Between Cation and Anion Exchange Membranes?
Cation Exchange Membranes (CEM) are usually comprised of a fluorinated polymer with sulfonic acid sites and have excellent ionic conductivity and thermal/chemical durability. Currently manufactured Anion Exchange Membranes (AEMs) can utilize various alkaline stable polymeric materials as the host material and come with various functional sites that conducts OH- or any other anionic species. Thermal/chemical durability of AEMs are in general lower compared to its CEM counterparts.
Freudenberg H15C13 - 155 µm Carbon Paper
ELAT LT1400 - 454 μm Carbon Cloth
Freudenberg H23C2 - 220 µm Carbon Paper
ELAT LT1400 - 454 μm Carbon Cloth
ELAT Activated Plain Cloth - 406 μm Carbon Cloth
Flexible carbon paper gas diffusion layer with microporous layer, 220 µm thick, optimized for humidified stationary LT-PEMFC and HT-PEMFC systems.
Flexible carbon paper GDL with MPL and hydrophobic treatment; 155 µm thick, ideal for humidified stationary LT-PEMFC systems.
Teflon-treated carbon cloth GDL with microporous layer; 454 µm thick, ideal for gaseous or liquid electrochemical cells.
Teflon-treated carbon cloth GDL with microporous layer; 454 µm thick, ideal for gaseous or liquid electrochemical cells.
Hydrophilic, activated carbon cloth GDL without MPL; 406 µm thick, optimized for flow batteries, electrolyzers, and liquid reactors.
Woven GDL with MPL engineered to reduce catalyst slurry permeation and prevent flooding in PEM fuel cells, PAFCs, and electrolyzers.
CT W1S1011 - 410 μm Carbon Cloth
CT GF030 - 2.5 - 4.5mm Graphite Felt
AvCarb MGL370
CT W0S1011 - 360 μm Carbon Cloth
Toray 060 Carbon Paper with PTFE Treatment
Sigracet 39 BB - 315 μm Carbon Paper
Woven GDL without MPL or PTFE treatment, offering high compressibility and quality control for fuel cell and biofuel research.
Conductive, chemically stable graphite felt electrode optimized for vanadium redox flow batteries, water purification, and thermal insulation.
Superior carbon paper GDL for fuel cells and electrolyzers, offering low electrical resistivity, high tensile strength, and uniform thickness.
190 μm carbon fiber composite paper with hydrophobic PTFE wet-proofing, designed as an effective GDL catalyst backing layer for fuel cells.
Non-woven carbon paper GDL with MPL and 5 wt% PTFE treatment, designed to prevent flooding and optimize water management in PEMFCs and PEM electrolysis.
Non-woven carbon paper GDL with MPL and 5 wt% PTFE treatment, designed to prevent flooding and enhance water management in PEMFCs and PEM electrolysis.
Sigracet 22 BB - 215 μm Carbon Paper
Sigracet 22 AA - 180 μm Carbon Paper
Titanium Screen
Toray 120 Carbon Paper with PTFE Treatment
Titanium Frit
Sigracet 39 AA - 280 μm Carbon Paper
370 μm carbon fiber composite paper with hydrophobic PTFE wet-proofing, engineered as an effective GDL catalyst backing layer for fuel cells.
Non-woven carbon paper GDL without PTFE treatment or MPL, offering a cost-effective substrate with high surface flatness for fuel cell applications.
Grade 1 flattened, annealed expanded titanium screen used as an electrolyzer flow field diffuser to prevent oxidation on the oxygen anode side.
Sintered porous titanium frit with 80-micron rating, providing membrane support and corrosion resistance in high-pressure PEM electrolyzers.
Non-woven carbon paper GDL without PTFE treatment, offering high surface flatness and inter-lot homogeneity for fuel cell applications.
Non-woven carbon paper GDL with MPL and 5 wt% PTFE treatment, designed to prevent flooding and enhance water management in stationary and automotive PEMFCs.
Sigracet 28 BC - 235 µm Carbon Paper
Freudenberg H23C6 - 250 µm Carbon Paper
Thermally Platinized Low Porosity Titanium Fiber Felt
Panex PW06 - 508 µm Carbon Cloth
High Porosity Titanium Fiber Felt
CT GF065 - 6.5mm Graphite Felt
Thermally stable, woven carbon fiber fabric offering high tensile strength and contour conformation without wrinkling for composite applications.
Flexible carbon paper GDL with MPL and hydrophobic treatment, optimized for highly humidified stationary LT-PEMFC systems and automotive fuel cells.
Corrosion-resistant titanium fiber felt with thermal platinum coating, optimized as an anode flow field diffuser for PEM electrolyzers.
Sintered titanium fiber felt offering ~70-73% porosity, designed as an anode flow field and diffuser material for standard PEM electrolyzers.
Conductive, chemically stable 6.5 mm graphite felt electrode designed for vanadium redox flow batteries, water purification, and thermal insulation.
Sintered titanium fiber felt (~70-73% porosity) with thermal platinum coating, designed as a corrosion-resistant anode flow field for PEM electrolyzers.
Thermally Platinized High Porosity Titanium Fiber Felt
AvCarb GDS3260
Toray 120 Carbon Paper with MPL and PTFE Treatment
AvCarb P75T
SIGRACELL GFD 4.6mm Graphite Felt
SIGRACELL GFD 2.5mm Graphite Felt
PAN-based carbon fiber paper gas diffusion layer with a hydrophobic Teflon wet-proof coating, optimized for moisture handling in PEM fuel cells.
AvCarb gas diffusion system using EP40 carbon paper, PTFE, and a microporous layer to ensure optimal water management in tough PEMFC and DMFC systems.
Toray 120 carbon composite paper with PTFE wet-proofing and a microporous layer, engineered for fuel cells, batteries, and advanced electrolyzers.
High-porosity graphite battery felt offering high electrical conductivity and chemical inertness for redox flow and advanced high-temperature cells.
Permeable graphite battery felt with high porosity and stability, built to enhance charge exchange in redox flow and high-temperature battery systems.
Soft, compressible rayon-derived graphite felt fired at 2500 °C, offering high conductivity for redox flow batteries, microbial cells, and insulation.
Rayon Graphite Felt - 25.4 mm thick
ELECTROACRYLMECH OPC PVT LTD
KARAIKUDI , TAMILNADU
7092449892 / 7098928824
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INDIA , 630003
CIN- U26516TN2025OPC186116
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UDYAM - UDYAM-TN-21-0056206
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