title: Alkaline Ammonia Electrolysis on Electrodeposited Platinum for Controllable Hydrogen Production.
abstract: Ammonia is beginning to attract a great deal of attention as an alternative energy source carrier, because clean hydrogen can be produced through electrolytic processes without the emission of COx . In this study, we deposited various shapes of Pt catalysts under potentiostatic mode; the electrocatalytic oxidation behavior of ammonia using these catalysts was studied in alkaline media. The electrodeposited Pt was characterized by both qualitative and quantitative analysis. To discover the optimal structure and the effect of ammonia concentration, the bulk pH value, reaction temperature, and applied current of ammonia oxidation were investigated using potential sweep and galvanostatic methods. Finally, ammonia electrolysis was conducted using a zero-gap cell, producing highly pure hydrogen with an energy efficiency over 80 %.
authors.affiliation: Electrochemical Reaction and Technology Laboratory (ERTL), School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, South Korea.
authors.forename: Jieun
authors.initials: J
authors.lastname: Gwak
authors.affiliation: Electrochemical Reaction and Technology Laboratory (ERTL), School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, South Korea.
authors.forename: Myounghoon
authors.initials: M
authors.lastname: Choun
authors.affiliation: Electrochemical Reaction and Technology Laboratory (ERTL), School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, South Korea. Jaeyoung@gist.ac.kr.|Ertl Center for Electrochemistry and Catalysis, Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, South Korea. Jaeyoung@gist.ac.kr.
authors.forename: Jaeyoung
authors.initials: J
authors.lastname: Lee
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D004572:Electrolysis / Q000379:methods*; D004595:Electroplating; D006859:Hydrogen / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D010984:Platinum / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D010984:Platinum; D000641:Ammonia; D006859:Hydrogen
keywords: ammonia; electrodeposition; electrolysis; hydrogen; platinum