Flow Bodies

Flow bodies form the working chamber of every cell in the line, and the material choice, graphite, PEEK, or PTFE, is driven by the electrochemistry rather than a one-size-fits-all default. Graphite replacement bodies cover Redox Flow’s A-Cell and S-Cell flow battery platforms, while PEEK is the standard flow-body material across Redox Flow’s X-Cell family for general electrolysis work, with PTFE available where halogens are present in the electrolyte. Custom materials and geometries are available for non-standard chemistries.

• Graphite for Flow Batteries: Replacement flow bodies for Redox Flow’s A-Cell and S-Cell, in interdigitated flow-field format for 2.5x2.5cm or 5x5cm active areas.
• PEEK for General Electrolysis: Standard flow-body material across Redox Flow’s X-Cell platform, chemically robust up to 95°C across the full pH range.
• PTFE for Halogen Chemistries: Alternative flow-body material recommended when halogens are present in the electrolyte.
• High-Performance Graphite Spec: 1.92 g/cm³ density, 9 μΩ m resistivity, 100 MPa compressive strength, non-permeable up to 250°C.
• Fitting Options: Graphite bodies available with or without pre-installed PFA Swagelok fittings (1/8" or 1/4" tubing).
• Custom Materials & Geometries: Additional materials, active areas, and dimensions available on request.