Redox Flow Battery Testing Cell Stack with Serpentine Flow Channels, CRFBTCSSFC

A Redox Flow Battery (RFB) testing stack is a laboratory-scale or pilot-scale assembly used to evaluate the electrochemical performance, fluid dynamics, and durability of a battery design before full-scale commercialization. While a "single cell" tests a specific material (like a new membrane), a stack tests how multiple cells interact when connected electrically in series and fluidically in parallel.

A testing cell stack is a "sandwich" of multiple repeating units. The primary components are: (1) Bipolar Plates (BPP): These plates separate individual cells. They must be electronically conductive to transfer electrons between cells but chemically inert to the electrolyte. They often feature flow fields (serpentine or interdigitated patterns) to distribute the liquid evenly. (2) Porous Electrodes: Usually made of carbon felt or carbon paper, these provide the high surface area needed for the redox reactions to occur. (3) Ion-Exchange Membrane (IEM): Positioned between the positive and negative half-cells of each unit to allow charge-balancing ions to pass while preventing the "crossover" of the active redox chemicals. (4) End Plates & Current Collectors: Heavy-duty outer plates (often stainless steel or high-strength plastic) that provide the clamping force to seal the stack. Copper current collectors are placed just inside the end plates to connect the stack to the power supply.

Part Number	CRFBTCSSFC (C-RFB-TCSSFC)
Structure/Components	End Plates: PEEK material Current Collector: Graphite plate with serpentine flow channels Electrode: Graphite felt (T=3 mm) Electrode Gasket: PTFE Membrane Frame: Silicone Tubing Connection: Barbed hose fitting  Max. Cell Voltage: 1.5-1.7 V Three or five repeated units
Cell Sizes	Effective area for 3 stacks is 3.2 cm * 3.2 cm (1.6 cm*1.6 cm or 2.0 cm * 20 cm is also available upon request; the customized stack number can be up to 5). The single cell size is W90×H100 mm  Effective area for 5 stacks is 5.0 cm * 5.0 cm (the customized stack numbers can be upto 8); The single cell size is W90×H100 mm
Flow Channels	Standard flow channel is Serpentine                 Other flow channel types: such as interdigital, parallel serpentine are also available upon request.
Assembling Diagram/Parts
Application Field	All-Vanadium Redox Flow Battery Iron-Chromium Redox Flow Battery
Note	The cell components should be thoroughly cleaned and dried after use.