The primary advantage of 3D electrodes is their increased surface area, which provides more active sites for catalytic reactions. This results in higher reaction rates and better utilization of the catalyst material. Additionally, the porous nature of 3D electrodes enhances mass transport, allowing reactants and products to move more freely within the electrode structure. This reduces diffusion limitations and improves overall efficiency. The unique geometry of 3D electrodes also promotes better distribution of electric fields, further enhancing catalytic performance.