Early-Stage Detection of Solid Oxide Cells Anode Degradation by Operando Impedance Analysis

Processes

Linda Barelli¹  Gianni Bidini¹  Arianna Baldinelli¹  Antunes Staffolani²  Francesco Nobili² 

[1] Department of Engineering, Università Degli Studi di Perugia, Via Duranti 93, 06125 Perugia, Italy;School of Science and Technology, Chemistry Division, Università Degli Studi di Camerino, Via Sant’Agostino 1, 62032 Camerino, Italy;

关键词: fuel cells;    SOFC;    electrolysis;    EIS;    DRT;    degradation;   

DOI  :  10.3390/pr9050848

来源: DOAJ

【 摘 要 】

Solid oxide cells represent one of the most efficient and promising electrochemical technologies for hydrogen energy conversion. Understanding and monitoring degradation is essential for their full development and wide diffusion. Techniques based on electrochemical impedance spectroscopy and distribution of relaxation times of physicochemical processes occurring in solid oxide cells have attracted interest for the operando diagnosis of degradation. This research paper aims to validate the methodology developed by the authors in a previous paper, showing how such a diagnostic tool may be practically implemented. The validation methodology is based on applying an a priori known stress agent to a solid oxide cell operated in laboratory conditions and on the discrete measurement and deconvolution of electrochemical impedance spectra. Finally, experimental evidence obtained from a fully operando approach was counterchecked through ex-post material characterization.

【 授权许可】

Unknown