Hydrogen Technology World Expo
X-Cell: The Most Flexible Electrolysis Cell for R&D
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Modular Electrolysis Cell for Versatile Flow Applications
The X-Cell is a high-performance, modular electrolysis cell designed for a wide range of electrochemical applications in flow. It is especially suited for research and development where flexibility, chemical compatibility, and ease of configuration are essential. The design allows users to adapt the cell to specific experimental needs without switching platforms. It is compatible with all our other electrochemical flow-cells, such as the S-Cell and A-Cell.
Key Features and Flexibility
- Fully modular design. Enables simple swapping and customization of components.
- Interchangable current collectors. Choice between flat surface of flow-field collectros in a broad variety of materials including: nickel, stainless steel, titanium copper, platinum coated titanium and gold coated titanium.
- Intergrated accurate temperature measurement. Embedded temperature sensor support for accurate, real-time monitoring.
- High chemical compatibility. Corrosion-resistant polymers ensure compatibility with broad chemical ranges and minimize contamination.
- Wide pH and temperature range. Cells withstand full pH spectrum and elevated temperatures up to 95°C, covering most R&D requirements.
- Compatibility with reference electrodes. Enables true three-electrode measurements via Luggin capillary ports.
- Superior material selection. Only corrosion-resistant, low impurity materials contact electrolytes, preserving catalyst and electrode integrity.
- Customizable and upgradable. By acquiring separate gaskets and module componnents, users can convert cells for radically different applications without full replacements.
Gasket configuration using current collectors with flow field: Simple gasket configuration limits risks of leakage. Ideal for thin electrodes and prefabricated MEA’s.
Gasket configuration using flat current collectors: Both flow-field and cover gaskets are required. Cover gaskets are used to fine-tune the total thickness, matching the electrode thickness. Ideal for thick porus electrodes and multilayer electrodes, GDL, and MPL.
Temperature control
The latest version of the X-Cell (launched April 2025) includes an integrated temperature measurement system. A metal sensor block is embedded in the PEEK flow body and pressed against the current collector to enable accurate temperature readings. It supports common thermometer and thermocouple sizes (3 mm, 4 mm, and 1/8″).
Temperature Control Unit
This system can be used in combination with a dedicated temperature control setup based on a flow heat exchanger principle. To the best of our knowledge, similar products cannot be found by any other companies in the field.
Our solution comes as three different configurations that are based on the same components and can be interchanged. All options are based on a PEEK flow body and aluminum block shown above. The PEEK body contains one (variant 1) or two separate (variant 2) flow chambers for heating/cooling one or two independent liquids, respectively. The liquids in the experimental setup are circulated through the PEEK flow body and placed up against an aluminium heating/cooling plate, whereby heat is transferred to or from the liquids in the PEEK flow body. The aluminium plate is separated from the liquids by a thin PTFE sheet, whereby corrosive/oxidative solutions also can be heated without corroding the aluminium plate.
Besides the possibility for placing the aluminium block on a heating plate, it also comes with holes for heat cartridges, cooling liquids and thermometers.
Accessories
- Inline pressure unit
- Flow-through electrode holder
- UV/VIS Fiber optical flow cell
- Open circuited voltage cell
Variants
The original X-Cell
- Fully modular design with interchangeable current collectors.
- Choice of flat surface or flow-field collectors.
- Standard materials.
- Compatible with both ion exchange membranes and porous separators.
- Designed for high chemical resistance and minimal leaching or catalyst poisoning.
- Suitable for operation at elevated temperatures (up to 90 °C).
X-Cell with 3 or 4 compartments
- Variable compartment/electrode thickness, determined by gaskets.
- Can be supplied with current collectors (flow field or ‘flat surface’).
- Material choices are large, can fit almost any chemistry.
- Application areas: Electrodialysis, Electrochemical CO2 reduction.
X-Cell with ports for reference electrodes
- Reference electrode measurements inside cell through Luggin Cappilary.
- Reference electrodes are placed outside cell.
- The cell can be operated at high temperatures.
- Four port for connection of up to three reference electrodes.
Application Areas
The X-Cell supports a broad range of electrochemical processes, including:
- Alkaline water electrolysis
- PEM and AEM water electrolysis
- CO₂ electrolysis and electrochemical reduction
- Electrochemical metal recovery and refining
- Desalination and ion removal
- Organic electrosynthesis and non-aqueous systems
- Electrodialysis
- Redox flow battery testin
Technical Specifications
- Active Area: 2.5cm x 2.5cm and 5cm x 5cm
- Current collectors with and without flow field – any electrode thicknesses
- Main flow body is machined in highly corrosion resistant PEEK
- Can be operated up to 95°C Full pH range – depending on current collector and gasket materials
- Standard materials for current collectors: nickel, stainless steel, titanium, copper, plantinum-coated titanium, gold-coated titanium
- Swagelok fittings for tight connecting to 1/8” tubing
- Gaskets/Spacers Materials: PTFE, EPDM or VITON
We accomodate custom requests for active area sizes, materials for current collectors, and tubing dimension. For this, submit a request on www.redox-flow.com.
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