Research progress on performance of ammonia solid oxide fuel cells
As a zero-carbon fuel and a hydrogen carrier,ammonia(NH3)has great storage and transportation advantages.Solid oxide fuel cell(SOFC),a clean and efficient power generation device,shows promising application prospects in distributed power generation,combined heat and power generation,energy storage and peaking,etc.NH3 can be used directly as SOFC anode fuel for efficient,clean,low-cost power generation.In this review,the working principles of proton-conducting and oxygen ion-conducting ammonia SOFC,as well as the electrolyte and electrode materials,and the decomposition process of NH3 at the anode were firstly introduced.The experimental research status of ammonia SOFC was then summarized,followed by review on the performance of two types ammonia SOFC with different electrolytes and electrode materials,electrolyte thicknesses,temperatures,and cell structure type using the maximum power density of single cell as evaluation indicator,and analysis on the reasons for the difference in cell performance.Finally,the current challenges and the future research directions of ammonia SOFC with their application potential in combined heat and power system were discussed.
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