Membranes built
with fluorine
without it.
PFAS-Free Membranes & Ionomers for Next-Generation Electrochemical Systems
Feynman Dynamics develops high-performance Fluorine-free AEM/PEM membranes and ionomers for CO₂ electrolysis, water electrolysis, and fuel cells. Combining advanced polymer chemistry with roll-to-roll manufacturing, our materials deliver low resistance, high durability, MEA compatibility, and industrial-scale consistency for next-generation electrochemical systems.
Section I
Anion Exchange
Membranes
Fluorine-free AEMs combining high ionic conductivity with exceptional chemical and mechanical stability— for CO₂ electrolysis, water electrolysis, fuel cells, and flow batteries.
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self-supported
Achilles M3
Achilles M3 AEMs are available in 20 cm × 20 cm and A4 standard formats, as well as 1 m × 1 m sheets, with custom dimensions supplied on request. The membranes are fabricated entirely from a proprietary resin (100% resin composition).
Structure
Self-supported · 100% resin composition
FEATURES
Self-supported
High ionic conductivity
Excellent chemical stability across pH 1–14
SIZES
20 cm × 20 cm · A4 · 1 m × 1 m · custom on request
APPLICATIONS
Alkaline fuel cells · alkaline water electrolyzers · CO₂ electrolysis · related electrochemical technologies
Thickness
45 μm · 75 μm · 115 μm
Specification — Peris series
Eight grades of cation exchange membrane, self-supported and reinforced.
Series
Description
Thickness
Size
Applications
M3-45
Self-supported
45 μm
20×20 cm · A4 · 1×1 m
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-75
Self-supported
75 μm
20×20 cm · A4 · 1×1 m
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-115
Self-supported
115 μm
20×20 cm · A4 · 1×1 m
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-R-70
Reinforced (PPS)
70 μm
20×20 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-R-90
Reinforced (PPS)
90 μm
20×20 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-R-100
Reinforced (PPS)
100 μm
20×20 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-R-120
Reinforced (PPS)
120 μm
20×20 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-XL-45
Crosslinked
45 μm
20×20 cm · A4 · 1×1 m
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-XL-75
Crosslinked
75 μm
20×20 cm · A4 · 1×1 m
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
M3-XL-110
Crosslinked
110 μm
20×20 cm · A4 · 1×1 m
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
I–V Performance.
Three Achilles AEMs evaluated under standard alkaline-electrolysis conditions. The curves below illustrate typical operating behaviour and are provided for relative comparison.
Sample A M3-45 (45 μm, self-supported)
Sample B M3-XL-45 (45 μm, crosslinked)
Sample C M3-R-70 (70 μm, reinforced)
Electrolyte 1 M KOH
Temperature 60 °C
Section II
Proton Exchange
Membranes
Feynman Dynamics' proton exchange membranes (PEMs) are sulfonated polymer electrolyte membranes engineered for selective proton (H⁺) transport with effective rejection of anionic species. They are deployed in fuel cells (PEMFCs), water electrolyzers (PEMWE), and redox flow batteries — notably all-vanadium redox flow batteries (VRFBs) — where high proton conductivity is paired with low vanadium-ion permeability to maintain coulombic efficiency and long-term capacity retention.
Self - supported
Peris CM3
Peris CM3 PEMs is a high-performance membrane designed for selective ion transport, particularly for cations.
Thickness
20 μm · 40 μm · 50 μm · 75 μm
Structure
Self-supported polymer
FEATURES
High cation selectivity
Low electrical resistance
High mechanical strength
Good thermal stability across a wide temperature range
Chemical stability in acids, bases, and organic solvents
APPLICATIONS
Electrodialysis · fuel cells · battery separators · related electrochemical applications
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Specification — Peris series
Eight grades of cation exchange membrane, self-supported and reinforced.
Grade
Type
Thickness
Size
Applications
CM3-20
Self-supported
20 μm
10×10 / 20×20 / 30×30 / 50×40 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
CM3-40
Self-supported
40 μm
10×10 / 20×20 / 30×30 / 50×40 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
CM3-50
Self-supported
50 μm
10×10 / 20×20 / 30×30 / 50×40 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
CM3-75
Self-supported
75 μm
10×10 / 20×20 / 30×30 / 50×40 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
CM3-R-50
Woven PPS/PEEK reinforced
50 μm
10×10 / 20×20 / 30×30 / 50×40 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
CM3-R-70
Woven PPS/PEEK reinforced
70 μm
10×10 / 20×20 / 30×30 / 50×40 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
CM3-R-90
Woven PPS/PEEK reinforced
90 μm
10×10 / 20×20 / 30×30 / 50×40 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
CM3-R-120
Woven PPS/PEEK reinforced
120 μm
10×10 / 20×20 / 30×30 / 50×40 cm · A4
AEMWE / PEMWE / CO₂RR / Fuel Cells / Flow Batteries
Section III
Ionomers
Feynman Dynamics' ionomer dispersions consist of ion-conductive polymers stably dispersed as colloids in polar solvent systems. Formulated for direct processing, they serve as precursors for catalyst-layer fabrication and membrane coating, providing both ionic conductivity and catalyst-binder functionality in fuel cells, water electrolyzers, and related electrochemical devices.
Io - I
Io-M3-S
Anion-exchange ionomer dispersion based on the M3 chemistry.
Solid content
≥ 2 wt %
SPECIFICATION
50 mL · 100 mL · 500 mL ~ 10 L
APPLICATIONS
AEM Water Electrolysis · CO₂RR · AEM Fuel Cells
Io - II
Io-M7-S
Anion-exchange ionomer dispersion based on the M7 chemistry.
Solid content
≥ 2 wt %
SPECIFICATION
50 mL · 100 mL · 500 mL ~ 10 L
APPLICATIONS
AEM Water Electrolysis · CO₂RR · AEM Fuel Cells
Io - III
Io-CM3-S
Cation-exchange ionomer dispersion based on the CM3 chemistry.
Solid content
≥ 2 wt %
SPECIFICATION
50 mL · 100 mL · 500 mL ~ 10 L
APPLICATIONS
AEM Water Electrolysis · CO₂RR · AEM Fuel Cells