Introduction
Fueiceel® Research Grade 50cm2 MEA CO2 Electrolyzer - Serpentine Flow Field is a specialized device designed for the electrochemical conversion of carbon dioxide (CO2) into carbon monoxide (CO). This technology is pivotal in carbon capture and utilization (CCU) strategies, providing a sustainable pathway to produce CO, a valuable industrial feedstock. The MEA electrolyzer, equipped with an Anion Exchange Membrane (AEM), is particularly suited for research purposes, allowing detailed studies on CO2 reduction reactions (CO2RR) and the development of efficient catalysts.
Test Report - CRRMEA5a #0167 Signed.pdf
A complete electrolyzer with MEA in it and a test report can be provided if requested. A testing cost will apply on the complete electrolyzer.
Partial reference
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 CO2+ 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-)
Anode (Oxygen Evolution Reaction - OER): In an alkaline environment, hydroxide ions are oxidized to produce oxygen, water, and electrons.
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 50cm2 MEA CO2 Electrolyzer - Serpentine 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.