The stability of the Ag towards electrochemical USR is studied for a period of 9 h by performing chronoamperometry at -1 V vs. RHE by using a solution of 0.1 M KNO3 and 0.1 M KHCO3 equilibrated with CO2 as the catholyte. The products are sampled every 1h and Figure denotes the urea FE and urea CD as a function of time. A constant urea FE of ~100 % is observed and the urea CD remains constant through out the study period indicating that Ag is stable for the electrochemical USR. So far all the analysis are done on planar Ag. To improve the urea CD, 10 nm of Ag was sputter coated on a carbon paper which acts as a gas diffusion electrode (GDE) and the reaction was carried out by using 1 M KNO3 and 0.1 M KHCO3 equilibrated with CO2. The urea CD improved drastically in comparison with planar Ag although an order of magnitude improvement is not observed as the NO3 -is still in the liquid phase and only the CO2 concentration is improved in gas phase. Figure denotes the effect of applied potential when Ag-GDE is used as the electrode. At -1.25 V vs. RHE, ~100 % urea FE and ~-100 mA/cm 2 urea current density is observed and this is the highest so far reported in literature. Figure denotes the spectra obtained from XPS performed on Ag pre-electrolysis. Two prominent peaks are observed at binding energies corresponding to 374. 5 and 368.5 eV. These peak locations correspond to Ag 3d3/2 and Ag 3d5/2. The location of Ag 3d5/2 at 368.5 eV and the difference in binding energies between Ag 3d5/2 and Ag 3d5/2 (6 eV) indicate that Ag is in its metallic state. Negligible shift (~0.12 eV) in the Ag 3d5/2 binding energy peak is observed for the Ag post electrolysis denoted by Figure , and the catalyst still remains in its metallic state, indicating that there is no change in the oxidation state of the catalyst after performing 1 h of electrochemical USR.