%0 Journal Article
%A Blum, Ludger
%A Fang, Qingping
%A de Haart, L. G. J.
%A Quadakkers, Willem J.
%A Gross-Barsnick, Sonja-Michaela
%A Menzler, Norbert H.
%T Long-term operation of solid oxide fuel cells and preliminary findings on accelerated testing
%J International journal of hydrogen energy
%V 45
%N 15
%@ 0360-3199
%C New York, NY [u.a.]
%I Elsevier
%M FZJ-2020-00283
%P 8955-8964
%D 2020
%X Stationary applications of Solid Oxide Fuel Cell systems require operating times of 40,000 to 80,000 h for market introduction. Therefore, extended lifetime tests are essential for learning about the long-term behavior and various degradation mechanisms and to foster ideas about accelerated stack testing. The Forschungszentrum Jülich has been gradually extending the testing time, resulting in successful short-stack operating times of between 20,000 and 40,000 h. This work highlights the results of these long-term tests and compares the observations for different material combinations, operating temperatures of 700 and 800 °C, including different fuel utilizations and gas compositions. An increase of temperature from 700 to 800 °C leads to an acceleration of the degradation rate by a factor of 1.5–2. Meanwhile, an increase in fuel utilization from 40 to 80% did not result in increased degradation. The same was found for higher current densities of up to 1 Acm−2.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000523643400081
%R 10.1016/j.ijhydene.2020.01.074
%U https://juser.fz-juelich.de/record/872811