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Alkaline Ammonia Electrolysis on Electrodeposited Platinum for Controllable Hydrogen Production
Author(s) -
Gwak Jieun,
Choun Myounghoon,
Lee Jaeyoung
Publication year - 2016
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201501046
Subject(s) - ammonia , electrolysis , ammonia production , catalysis , platinum , inorganic chemistry , hydrogen , electrolytic cell , hydrogen production , electrolyte , chemistry , alkaline water electrolysis , electrolysis of water , materials science , chemical engineering , electrode , organic chemistry , engineering
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 CO x . 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 %.