An electroreduction system for converting carbon oxides selected from CO, CO 2 or any mixture thereof into multicarbon (C 2 +) products, the system comprising: - a cathodic compartment having a reactant inlet for receiving a stream of CO, CO 2 or any mixture thereof, and comprising a cathode, the cathode comprising a catalyst layer that is in contact with a catholyte solution: - an anodic compartment, the anodic compartment comprising an anode and accommodating a flowing anolyte solution; - a bipolar membrane being positioned between the cathodic compartment and the anodic compartment, the bipolar membrane comprising: a cation-exchange layer (CEL) in cation communication with the catholyte solution to provide protons into the catholyte solution; an anion-exchange layer (AEL) in anion communication with the anolyte solution to provide hydroxide ions at a surface of the anode; and an interfacial layer defined between the cation-exchange layer and the anion-exchange layer for splitting water into the protons and the hydroxide ions; wherein the cathodic compartment and/or the anodic compartment have a product outlet to release the C 2+ products; characterized in that the cathodic compartment accommodates a stationary catholyte layer between the catalyst layer of the cathode and the CEL, the stationary catholyte layer comprising the catholyte solution; in that the thickness of the stationary catholyte layer is at most 280 μm as measured by a spiral micrometer; and in that the catholyte solution is a non-buffered solution. - a cathodic compartment having a reactant inlet for receiving a stream of CO, CO 2 or any mixture thereof, and comprising a cathode, the cathode comprising a catalyst layer that is in contact with a catholyte solution: - an anodic compartment, the anodic compartment comprising an anode and accommodating a flowing anolyte solution; - a bipolar membrane being positioned between the cathodic compartment and the anodic compartment, the bipolar membrane comprising: a cation-exchange layer (CEL) in cation communication with the catholyte solution to provide protons into the catholyte solution; an anion-exchange layer (AEL) in anion communication with the anolyte solution to provide hydroxide ions at a surface of the anode; and an interfacial layer defined between the cation-exchange layer and the anion-exchange layer for splitting water into the protons and the hydroxide ions; a cation-exchange layer (CEL) in cation communication with the catholyte solution to provide protons into the catholyte solution; an anion-exchange layer (AEL) in anion communication with the anolyte solution to provide hydroxide ions at a surface of the anode; and an interfacial layer defined between the cation-exchange layer and the anion-exchange layer for splitting water into the protons and the hydroxide ions; wherein the cathodic compartment and/or the anodic compartment have a product outlet to release the C 2+ products; characterized in that the cathodic compartment accommodates a stationary catholyte layer between the catalyst layer of the cathode and the CEL, the stationary catholyte layer comprising the catholyte solution; in that the thickness of the stationary catholyte layer is at most 280 μm as measured by a spiral micrometer; and in that the catholyte solution is a non-buffered solution. <EOS>