کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7727995 | 1497908 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, characterization and performance of robust poison-resistant ultrathin film yttria stabilized zirconia - nickel anodes for application in solid electrolyte fuel cells
ترجمه فارسی عنوان
سنتز، خصوصیات و کارایی اتریتیو مقاوم در برابر سم مقاوم در برابر سدیم، تثبیت آند آنزیم زیرکونیا - نیکل برای کاربرد در سلول های سوخت جامد الکترولیت
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
We report on the synthesis of undoped â¼5 μm YSZ-Ni porous thin films prepared by reactive pulsed DC magnetron sputtering at an oblique angle of incidence. Pre-calcination of the amorphous unmodified precursor layers followed by reduction produces a film consisting of uniformly distributed tilted columnar aggregates having extensive three-phase boundaries and favorable gas diffusion characteristics. Similarly prepared films doped with 1.2 at.% Au are also porous and contain highly dispersed gold present as Ni-Au alloy particles whose surfaces are strongly enriched with Au. With hydrogen as fuel, the performance of the undoped thin film anodes is comparable to that of 10-20 times thicker typical commercial anodes. With a 1:1 steam/carbon feed, the un-doped anode cell current rapidly falls to zero after 60 h. In striking contrast, the initial performance of the Au-doped anode is much higher and remains unaffected after 170 h. Under deliberately harsh conditions the performance of the Au-doped anodes decreases progressively, almost certainly due to carbon deposition. Even so, the cell maintains some activity after 3 days operation in dramatic contrast with the un-doped anode, which stops working after only three hours of use. The implications and possible practical application of these findings are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 324, 30 August 2016, Pages 679-686
Journal: Journal of Power Sources - Volume 324, 30 August 2016, Pages 679-686
نویسندگان
F.J. Garcia-Garcia, F. Yubero, J.P. Espinós, A.R. González-Elipe, R.M. Lambert,