Abstract
This study presents a groundbreaking advancement in the field of ceramic fuel cells, namely, solid oxide fuel cells (SOFCs) and proton ceramic fuel cells (PCFCs). In contrast to the prevalent crystalline fluorite oxygen ion-conducting electrolytes and proton-conducting perovskite electrolytes, our study underscores the transformative potential of amorphous oxide material. The Nd-alumina amorphous oxide demonstrates exceptional proton conductivity, reaching 0.16 Scm−1 and an impressive power density of 713 mWcm−2 at 500 °C, thereby surpassing the capabilities of existing crystalline electrolyte materials. Furthermore, this study provides a comprehensive comparison between amorphous Nd-alumina and its crystalline counterparts, thus elucidating the inherent advantages of the amorphous form over traditional crystalline structures. Several characterizations and experimental methods have been introduced for in-depth analysis of proton and oxide ions migration in developed NdAl-Aos electrolytes. However, amorphous Nd-alumina emerges as an alternative component in ceramic fuel cells, propelling an electrolyte technology towards unparalleled performance and paving the way for a sustainable SOFC/PCFC future.
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