Gas Diffusion Electrode Flow Cells

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Buy Flow Cells | Why Use GDE Cells? | Choosing GDE Cell | Applications | Resources | Technical Support Gas diffusion electrode (GDE) flow cells are electrochemical devices that facilitate cutting-edge electrochemistry research around green chemistry, clean energy, and industrial gas production. These cells pass electrolyte solution continuously over the electrodes under an applied potential. Compared with standard H-cells, this continuous-flow format offers higher efficiency, real-time analysis, and scale-up opportunities. Additionally, while standard H-cells require gases such as carbon dioxide (CO 2 ) or oxygen (O 2 ) to dissolve into the liquid electrolyte and diffuse towards the reaction surface, GDE flow cells feed gas directly to the back of the electrode. This creates a three-phase boundary (TPB), which shortens the transport path for reactants and enabling higher current densities than standard electrochemistry techniques. Buy Flow Cells Related categories: MEA electrolyzers , PSE reactors , electrochemical cells , electrodes , electrochemistry [[split]] Why Use GDE Cells? Electrochemical CO 2 reduction (CO 2 RR) provides an excellent example of where GDE can improve research, and make lab results more industrially relevant. CO 2 is poorly soluble in water, so converting it into useful chemicals and fuels at an industrially relevant rate will require overcoming mass-transport limits directly. By supplying CO 2 to the catalyst surface at a higher local concentration and with a shorter diffusion path, GDE flow cells make CO 2 RR viable at rates that H-cells simply cannot sustain. Flow cells sit between H-cells and membrane electrode assemblies (MEAs) in regards to their potential efficiencies and industrial applicability. Circulating the catholyte adds some ohmic resistance compared with a zero-gap MEA, but it also suppresses competing hydrogen evolution, making it far easier to sample and monitor a reaction in real time. It is a useful middle ground for metho