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Electrolysis

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Electrolysis Flow Cells and Accessories for R&D

Advancing Electrolysis R&D with Modular Flow Cells

Our electrolysis product line supports cutting-edge research in water splitting, hydrogen production, catalyst testing, and emerging electrolysis technologies. Our electrochemical flow cells and components are designed to be flexible and modular — engineered for electrolyzer R&D that lets you test new membranes, electrodes, catalyst materials, or electrolyte solutions. Our setups are compatible with alkaline, AEM, PEM, and CO₂ electrolysis systems, as well as desalination and electrodialysis, and are scalable from catalyst screening at the 1 cm² level to system-level validation with multi-cell stacks.

Whether you’re screening catalysts for alkaline water electrolysis, testing membranes for AEM or PEM systems, or exploring CO₂ reduction and electrodialysis, our platform gives you a single hardware ecosystem that adapts to your chemistry — not the other way around.

Supported Electrolysis Chemistries

Our flow-cell systems and components integrate into a wide range of electrolysis setups:

  • Alkaline Water Electrolysis (AWE): For established, cost-effective hydrogen production platforms and new diaphragm development and testing. Our alkaline water electrolysis platform supports AWE research across catalyst, membrane, and bipolar-plate development.
  • Anion Exchange Membrane (AEM) electrolysis: Combining the advantages of alkaline chemistry with membrane-based operation. Our AEM electrolysis configuration enables the use of non-precious-metal catalysts.
  • Proton Exchange Membrane (PEM) electrolysis: For compact, high-efficiency hydrogen generation under clean water and acidic conditions. Standard and custom MEAs (membrane electrode assemblies) are supported.
  • CO₂ Electroreduction (CO2RR): For electrochemical CO₂ reduction research — converting CO₂ into valuable chemicals and fuels on a flexible platform for testing different electrodes, membranes, and process concepts.
  • Desalination: For electrochemical water treatment and salt removal research, including brackish water desalination via electrodialysis and capacitive deionization (CDI).
  • Electrodialysis (ED): For ion-selective membrane separation research.
  • Other Electrolysis Processes: For ion transport studies, selective ion separation, resource recovery, and coupled electrochemical separation/reaction systems on modular multi-compartment cell platforms.

Lab-Scale Electrolyzer Cells, Components & Accessories

Our research electrolysis cells and components are organized into two main groups: core flow cells and supporting accessories.

Flow cells and stacks

Components and consumables

Accessories for fluid handling and inline measurement

Electrolysis Research Applications

Our electrolysis components are used globally by researchers and engineers working on:

  • Catalyst development and screening for hydrogen evolution, oxygen evolution, and CO₂ reduction
  • Membrane evaluation across AEM, PEM, and hybrid systems
  • Gas-diffusion electrode (GDE) testing
  • General electrolysis applications
  • Hydrogen production from water electrolysis
  • Stack development and component benchmarking
  • Long-term stability testing of membranes and catalysts
  • Coupled systems powered by solar, wind, and other renewables
  • New materials development — including catalysts, electrodes, and membranes

Why Researchers Choose Redox Flow for Electrolysis

  • Flexible flow-field and cell design options — fully modular build
  • Materials selected for chemical resistance and thermal stability
  • Compatible with acidic, neutral, alkaline, and organic electrolytes
  • Configurable for membrane-separated or diaphragm-based systems
  • Support for both single-pass and recirculating flow modes
  • Scalable testing path — from 1 cm² M-Cell to 5×5 cm X-Cell to X-Stack series
  • Easy integration with standard lab setups and test stations

 

Customization and Collaboration

We support custom designs and are happy to assist with project-specific requirements, including:

  • Adaptation for non-standard materials or sizes
  • Prototyping of novel electrode or membrane configurations
  • Consultation on flow dynamics, compression, electrical routing, and advanced inline measurements
  • Joint development with academic and industrial partners

Our team is here to help you accelerate your electrolysis research — whether you’re building a proof of concept or optimizing for scale-up.

FAQ

Which electrolysis chemistries does the platform support?

Our electrolysis cells and components are designed for PEM, AEM, and alkaline water electrolysis (AWE), as well as CO₂ electrolysis (CO₂RR), electrodialysis, capacitive deionization (CDI), and other liquid-phase electrochemical processes. The same underlying X-Cell platform can be reconfigured for different chemistries by swapping membranes, electrodes, and gaskets.

What’s the difference between M-Cell, X-Cell, and X-Stack (with or without flow field)?

Three cell platforms, each optimised for a different research phase. The M-Cell (1 cm²) is a multipurpose Full Cell and Half Cell for catalyst screening, half-cell electrolyser testing, cyclic voltammetry, and kinetic studies — its small active area keeps material consumption low, and its ten operating configurations cover closed cell, open cell, half-cell, and three-compartment modes. The X-Cell (2.5 × 2.5 cm and 5 × 5 cm) is the workhorse single-cell platform for membrane, electrode, and catalyst performance characterisation at realistic current densities. The X-Stacks support up to 9 cells in series, designed for stack-level characterisation, bipolar-plate screening, and upscaling studies. Most labs start with M-Cell for fundamental and catalyst-development work, move to X-Cell for performance characterisation, and bring in an X-Stack when evaluating stack-level behaviour.

Can I integrate my own catalysts, membranes, or electrodes?

Yes. The platforms are built around interchangeable components, so you can integrate custom MEAs, commercial or research-grade membranes, custom-formulated catalyst layers, and third-party GDEs. Standard active-area sizes (1 cm² on M-Cell, 2.5 × 2.5 cm and 5 × 5 cm on X-Cell and X-Stack) are designed to accept a wide range of materials.

What accessories do I need for a complete R&D setup?

A functional electrolyzer R&D setup typically includes a flow cell, electrolyte reservoirs, a pump, temperature control, gas separation (for water-splitting experiments), and hydraulic connections. We offer all of these as individual components or as pre-configured packages. If you’re unsure which accessories you need, we can help scope a complete setup for your application.

Can you build a custom cell for my application?

Yes. Beyond our standard catalog, we routinely collaborate with researchers on custom active-area sizes, non-standard materials, novel flow-field geometries, and specialized multi-compartment architectures. For joint development with academic or industrial partners, contact us to discuss project scope.

What’s the operating temperature range?

M-Cell and X-Cell variants are rated to at least 90 °C.

Are these cells compatible with accessories from other manufacturers?

Our accessories use standard fittings (Swagelok 1/8″ or 1/4″ depending on model) and inert wetted surfaces, so they integrate easily with existing lab equipment. Our temperature control units in particular are designed as chemistry-agnostic inline heat exchangers that work with flow cells from any manufacturer.

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