
PEM electrolytic water testing fixture
Momenta Energy




The Advanced Flow Field Stack System is a specialized multi-cell electrochemical platform engineered for thin electrode/GDL setups and flow field optimization in cutting-edge electrolysis applications. This innovative stack features interdigitated flow field bipolar plates that enable precise control of fluid dynamics, mass transport, and electrochemical kinetics at the stack level, supporting electrode/GDL thicknesses down to almost 0 mm. The platform is purpose-built for researchers investigating electrode material innovations, flow field geometries, and stack efficiency in various electrolysis systems, with an advanced design that minimizes shunt currents while maximizing electrochemical performance.
Dimensions
14 cm x 14 cm x 8 cm and up (thickness depends on configuration)
Max. Operation Temperature
Up to 95 °C
Flow Body Material
PEEK (recommended for most operations) or PTFE
Current Collector Material
Copper, Gold-coated Titanium, Nickel, Platinum-coated Titanium, Stainless Steel (316L)
Active Area Cell
25 cm2 (other areas available on request)
Maximum Cell Count
Up to 9 cells
Electrode Thickness
≥ 1 mm
Current Collector Type
Interdigitated Flow Field
Flow Fields
Interdigitated (5x5cm), Custom Flow Fields on request, Extension: 1.2 mm (elevated geometry for enhanced mass transport)
Sealing gaskets material
PTFE, Ethylene propylene diene monomer (EPDM), Viton®
Available Gaskets Thickness (mm)
0.05 (PTFE)
End Plates Material
Stainless Steel
Chemical Resistance (pH Range)
Full pH range – depending on current collector and gasket materials
Individual Cell Voltage Monitoring
Yes (direct measurement on bipolar plates)
Fittings and Tubing Connection
Tight Swagelok fittings for 1/8” or ¼” tubing
Shunt Current Minimization
Advanced design for reduced shunt currents
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