Study of variables for accelerating lifetime testing of SOFCs

Alexandra Ploner, Anke Hagen, Anne Hauch

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Abstract

Solid oxide fuel cell (SOFC) applications require lifetimes of several years on the system level. A big challenge is to proof/confirm/demonstrate such exceptionally long lifetimes.Accelerated or compressed testing are possible methods. Activities in this area have been carried out without arriving at a generally accepted result. First accelerated testing approaches were performed under non-steady operation conditions (current cycling,temperature cycling) by different researchers [1, 2]. However, cycling conditions seemed to have no significant impact on degradation mechanisms. Furthermore, tests done at different current load cycling profiles revealed a strong deviation between predicted and measured lifetime [3].In this study, we present a detailed analysis of durability results for degradation mechanisms of single SOFC components as function of operating conditions. Electrochemical impedance data is collected and used to de-convolute the individual losses of singe SOFC cell components – electrolyte, cathode and anode. The obtained knowledge is adopted to identify operation profiles and appropriate stresses in order to execute appropriate accelerated testing for lifetime investigation of SOFCs.
Original languageEnglish
Publication date2016
Number of pages1
Publication statusPublished - 2016
Event12th European SOFC & SOE Forum - Lucerne, Switzerland
Duration: 5 Jul 20168 Jul 2016
Conference number: 12
http://www.efcf.com/index.php?id=1954

Conference

Conference12th European SOFC & SOE Forum
Number12
CountrySwitzerland
CityLucerne
Period05/07/201608/07/2016
Internet address

Cite this

Ploner, A., Hagen, A., & Hauch, A. (2016). Study of variables for accelerating lifetime testing of SOFCs. Abstract from 12th European SOFC & SOE Forum, Lucerne, Switzerland.