Fueiceel® Research Grade MEA CO₂ Stack (100 cm²/unit, Concentric Radial Flow Field) is a specialized electrochemical device used for the conversion of carbon dioxide (CO₂) into value-added chemicals or fuels, such as carbon monoxide (CO), formic acid, or hydrocarbons, through an electrochemical reduction process.

Key Components and Features:

- MEA (Membrane Electrode Assembly): The MEA is the core of the electrolyzer, consisting of an anion exchange membrane (AEM) sandwiched between two electrodes (anode and cathode). The electrodes are typically composed of catalysts that facilitate the electrochemical reactions.The membrane allows selective ion transport while maintaining electrical isolation between the electrodes.

- CO₂ Electrolyzer: The CO₂ electrolyzer uses electricity to drive the reduction of CO₂ into useful products. The overall reaction involves CO₂ reduction at the cathode and oxygen evolution at the anode.The choice of catalyst, electrolyte, and operating conditions (e.g., temperature, pressure, voltage) significantly affects the efficiency and selectivity of the process.

- Concentric Radial Flow Field: A concentric radial flow field is a specific design for the distribution of reactants (CO₂) and removal of products in the electrolyzer.The flow field pattern is designed to distribute the CO₂ gas uniformly across the electrode surface, optimizing contact between the gas and the catalyst. This design typically involves channels that radiate outward in a concentric pattern from the center of the flow field, allowing efficient transport of reactants and products.

Benefits of the Concentric Radial Flow Field:

- Uniform Distribution: Ensures uniform distribution of CO₂ across the cathode surface, which is critical for achieving high reaction rates and product uniformity.

- Minimized Pressure Drop: The radial design can reduce the pressure drop across the flow field, enhancing the overall efficiency of the electrolyzer.

- Improved Mass Transport: The design facilitates better mass transport of CO₂ and products, reducing diffusion limitations and increasing reaction kinetics.

Applications:

- CO₂ Conversion: The primary application of this technology is in the conversion of CO₂ into useful chemicals or fuels, which is a key area of research in carbon capture and utilization (CCU).

- Research and Development: This type of electrolyzer is often used in laboratory settings to study the fundamentals of CO₂ electroreduction, test new catalysts, or develop more efficient and scalable electrolyzer designs.

In summary, a Research Grade MEA CO₂ Electrolyzer with a Concentric Radial Flow Field is a sophisticated tool designed to study and optimize the electrochemical conversion of CO₂ under controlled laboratory conditions. It plays a vital role in advancing the field of carbon capture and utilization.

Partial References:

Adv. Energy Mater. Tailoring Microenvironments and In Situ Transformations of Cu Catalysts for Selective and Stable Electrosynthesis of Multicarbon Products (CRRMEA5a, Sci-Materials Hub)

Angew pH-Universal Electrocatalytic CO₂ Reduction with Ampere-level Current Density on Doping-engineered Bismuth Sulfide (CRRMEA1a 1cm² MEA electrolyzer, Figure 4d)

Chem Identification of Cu0/Cu+/Cu0 interface as superior active sites for CO₂ electroreduction to C2+ in neutral condition (CRRMEA1a, Figure S34)

Principle

The operation of the research-grade MEA electrolyzer hinges on the electrochemical reduction of CO₂ at the cathode, driven by an external power source. The key steps involved in this process include:

- CO₂ Supply: CO₂ gas is introduced into the cathode compartment, where it interacts with a catalyst specifically designed to facilitate the reduction of CO₂ to CO.

- Cathode Reaction: At the cathode, CO₂ molecules are reduced by accepting electrons, resulting in the formation of CO. This reaction is supported by the flow of electrons from the external circuit.

- Anode Reaction: Concurrently, at the anode, water (H₂O) molecules are oxidized to produce oxygen (O₂) gas, protons (H⁺), and electrons. The electrons are transferred through the external circuit back to the cathode, while hydroxide ions (OH^-) formed at the cathode migrate through the Anion Exchange Membrane (AEM) towards the anode.

- Ion Transport: The AEM plays a crucial role by allowing the migration of OH^- ions from the cathode to the anode, maintaining the ionic balance within the cell and ensuring continuous operation.

Reactions on Anode and Cathode

Cathode Reaction (CO₂ Reduction): At the cathode, CO₂ is electrochemically reduced to CO, with the formation of hydroxide ions (OH^-)

$${\text{CO}}_2+{\text{H}}_2\text{O}+2{\text{e}}^{-}\to \text{CO}+2{\text{OH}}^{-}$$

Anode (Oxygen Evolution Reaction - OER): In an alkaline environment, hydroxide ions are oxidized to produce oxygen, water, and electrons.

$$4{\text{OH}}^{-}\to {\text{O}}_2+2{\text{H}}_2\text{O}+4{�}^{-}$$

Features

- High Selectivity: The MEA electrolyzer is engineered to achieve high selectivity for CO production, minimizing the formation of other byproducts.

- Advanced Catalysts: The complete Fueiceel® electrolyzer is equipped with state-of-the-art catalysts, often utilizing metals such as silver (Ag) or gold (Au), which are known for their high efficiency and selectivity in the reduction of CO₂ to CO.

- Anion Exchange Membrane (AEM): The AEM is integral to the system, facilitating the transport of hydroxide ions from the cathode to the anode, which is crucial for maintaining the cell’s charge balance and overall efficiency.

- Compact Design: The electrolyzer’s compact and modular design makes it ideal for laboratory settings, allowing for easy integration into various experimental setups and enabling the testing of different catalysts and operational parameters.

- Real-time Monitoring: The Fueiceel® electrolyzer can be connected to elechemical devices (e.g. electrochemical station, DC power, gas chromatography & Gas mass flow meter etc) for real-time monitoring of key parameters such as voltage, current, CO₂ flow rate, and product composition, aiding in precise control and analysis.

Instruction of Use

- System Setup: Connect the CO₂ gas supply to the cathode compartment using appropriate tubing. Ensure the anode compartment is supplied with deionized water to facilitate the oxidation reaction. Verify that all connections are secure and that there are no leaks.

- Initial Checks: Power on the system and ensure that all monitoring equipment is operational. Adjust the CO₂ and electrolyte flow rates according to your experimental requirements.

- Operating the Electrolyzer: Set the power supply to the desired initial voltage, typically around 2.5-3.0 V.

Gradually increase the current while monitoring the voltage, ensuring it remains within the optimal range for CO production. Allow the electrolyzer to reach stable operating conditions, which may take some time depending on the conditioning of the membrane and catalysts.

- Data Collection: Continuously monitor CO production at the cathode using gas chromatography or other suitable analytical methods. Record operational data such as cell voltage, current, and gas flow rates for analysis.

- Shut Down: Gradually reduce the current to zero before switching off the power supply. Disconnect the gas and water supply lines, and if necessary, purge the system with an inert gas (e.g., nitrogen) to remove any residual reactive gases. Clean the electrolyzer components according to the manufacturer’s instructions to ensure their longevity and performance in future experiments.

Fueiceel® Research Grade MEA CO₂ Stack (100 cm²/unit, Concentric Radial Flow Field) is a critical tool for advancing the study of CO₂ reduction technologies, contributing to the development of sustainable carbon capture and utilization strategies.

For international orders, please ask us for quotes via

Email: contact@fueiceel.cn

Tel: +86 153-5789-9751

These cells are assembled by our engineers & a leakage-sealing test is done before leaving our lab. Complete electrolyzer with MEA and test report are available upon request.

Customized electrochemical cells can be made upon requests.

The accessories include: