Electrochemical synthesis of ammonia at atmospheric pressure and low temperature in a solid polymer electrolyte cell

The heterogeneous electrocatalytic synthesis of ammonia from nitrogen and water is carried out at Ru cathodes, using a Solid Polymer Electrolyte Cell (SPE), at atmospheric pressure and low temperature; the reduction rate increases with increase of temperature up to 100 °C, while with the increase of the negative potential a maximum is observed at −1.02 V vs. Ag/AgCl and gradually decreases in the hydrogen discharge region.