کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1276231 1497586 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemical compatibility between Sr-doped lanthanum manganite air electrode and AISI 441 interconnect
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Chemical compatibility between Sr-doped lanthanum manganite air electrode and AISI 441 interconnect
چکیده انگلیسی

Chromium poisoning of the air electrode of solid oxide fuel/electrolyzer cells is a critical issue when stainless steel with high Cr content is used as an interconnect material. The mechanism of the diffusion and deposition of the Cr species is not totally clear yet. In this work, an yttria-stabilized zirconia electrolyte (YSZ)/strontium-doped lanthanum manganite electrode (LSM)/AISI 441 alloy interconnect tri-layer structure has been fabricated by screen printing in order to simulate the working environment of a real cell. The samples are thermally treated in moist air atmosphere at 800 °C for up to 500 h. The porous LSM layer thickness has been controlled to investigate the Cr distribution in the porous layer and the diffusion behavior of the Cr species. The microstructure and elemental analysis show that Cr species diffuses into the porous LSM layer and deposits on the LSM surface. The deposition occurs simultaneously with the LSM grain growth.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 36, Issue 7, April 2011, Pages 4440–4448
نویسندگان
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