Lessons Learned from Operating a Solid Oxide Electrolysis Cell at 1.25 a/cm2 for One Year
نویسندگان
چکیده
Conventional Ni/yttria stabilized zirconia (YSZ) fuel electrode supported solid oxide electrolysis cells (SOECs) demonstrate acceptable long-term durability when operated at below -1 A/cm2. These suffer however severe degradation above A/cm2, where a large part of the cell resistance increase is associated with Ni/YSZ electrode. In this work, by introducing Ce0.8Gd0.2O2-d (CGO) nanoparticles into electrode, we reduce down to 39 mV/kh 810oC and -1.25 A steam supply failure 4000 h causes certain damage cell, resulting in higher second half one-year period. degradation-mitigation strategy successfully tried out increasing operating temperature 836oC eventually. The test terminated after reaching one year, demonstrating an average rate over current work shows high potential for modifying conventional SOEC use density applications.
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ژورنال
عنوان ژورنال: ECS transactions
سال: 2021
ISSN: ['2151-2051', '1938-5862', '1938-6737']
DOI: https://doi.org/10.1149/10301.0475ecst