Electrochemical Reaction and Technology Laboratory (ERTL), School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, South Korea.
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.
ChemSusChem. 2016 Feb 19;9(4):403-8. doi: 10.1002/cssc.201501046. Epub 2015 Nov 4.
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 %.
氨作为一种替代能源载体开始引起人们的极大关注，因为通过电解过程可以生产清洁的氢气，而不会排放 COx 。在这项研究中，我们在恒电位模式下沉积了各种形状的 Pt 催化剂；研究了这些催化剂在碱性介质中对氨的电催化氧化行为。通过定性和定量分析对电沉积的 Pt 进行了表征。为了发现最佳结构和氨浓度的影响，使用电位扫描和恒电流法研究了氨氧化的体积 pH 值、反应温度和施加电流。最后，使用零间隙电池进行了氨电解，产生了能量效率超过 80%的高纯氢气。
