کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8955407 1646087 2018 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cell-protecting regeneration from anode carbon deposition using in situ produced oxygen and steam: A combined experimental and theoretical study
ترجمه فارسی عنوان
بازسازی سلول محافظت از رسوب کربن آند با استفاده از اکسیژن و بخار تولید شده: یک مطالعه تجربی و نظری ترکیبی
کلمات کلیدی
سلول های سوختی اکسید جامد، رسوب کربن، بازسازی سلول، حذف کربن، اولین اصل،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد شیمی مواد
چکیده انگلیسی
Carbon deposition is a primary concern during the operation of solid oxide fuel cells (SOFCs) fueled with hydrocarbon fuels, leading to cell degradation and even cell damage. Carbon elimination is expected to be a promising approach to prolong cell life. This work reports on a combined experimental and theoretical investigation of cell regeneration from anode carbon deposition of tubular SOFCs fabricated by phase-inversion and co-sintering techniques. The as-prepared cell exhibits a maximum power density of 0.20 W cm−2 at 800 °C fueling with wet CH4, but fails to stable operation due to severe carbon deposition. Based on thermodynamic predictions, a successive cell-protecting regeneration process is proposed to eliminate deposited carbon without oxidizing Ni catalysts, during which CH4 and H2 fuels are provided in circulation. Through a total of 35 cycling tests, cell performance can always successfully restore to the initial level. The possible carbon elimination mechanism is investigated in detail based on thermodynamic and first-principle calculations. The feasibility of carbon elimination using in situ produced oxygen or steam through electrochemical reaction has been revealed, providing a novel continuous operation mode for hydrocarbon-based SOFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 34, Issue 12, December 2018, Pages 2375-2383
نویسندگان
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