The disclosure relates to a gas diffusion electrode—GDE—suitable for carbon dioxide electrolysis, said gas diffusion electrode having a gas diffusion membrane, the gas diffusion electrode further comprising an ink (19) deposited on the gas diffusion membrane; wherein the ink comprises an ion-conducting polymer and copper nanoparticles functionalized with one or more pyridine-containing ligands, wherein the one or more pyridine-containing ligands have an anchoring group comprising one sulphur atom tethered to the copper nanoparticles. The disclosure also relates to a gas-fed flow cell comprising such gas diffusion electrode and to a method for producing such GDE as well to the electrolysis of carbon dioxide using such GDE.