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(A) Current density of an Air Pt | Nafion 211 | Pt, H2 cell under different applied voltages. Cathode was supplied with air, anode was supplied with H2. (B) The ammonia formation rate at air and H2 sides, total ammonia formation rate and Faraday efficiency. (C) The relationship between formed NH3 and time of an Air, Pt | Nafion 211 | Pt, H2 cell under different applied voltages. Cathode was supplied with air, anode was supplied with H2.
