On the essential role of current density in electrocatalytic activity of the electrodeposited platinum for oxidation of ammonia

► Determine the essential role of the depositing current density in the electrocatalytic activity of the electrodeposited platinum on oxidation of ammonia. ► Determine the effect of the depositing current density on surface morphology and the loading amount of the prepared Pt electrocatalyst. ► Determine the electroactive surface area of Pt electrocatalyst and its correlation with the electrocatalytic activity.