کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803883 | 1516474 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Assessment of performances of Ni-Cu-LSGM as anode materials for intermediate-temperature LaGaO3-based solid oxide fuel cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Assessment of performances of Ni-Cu-LSGM as anode materials for intermediate-temperature LaGaO3-based solid oxide fuel cells Assessment of performances of Ni-Cu-LSGM as anode materials for intermediate-temperature LaGaO3-based solid oxide fuel cells](/preview/png/9803883.png)
چکیده انگلیسی
The performances of Ni-Cu-LSGM as anode materials for intermediate-temperature LaGaO3-based solid oxide fuel cells were assessed. The phase composition of samples before and after reduction was characterized by X-ray diffractometry. The electrical properties of samples were measured using impedance spectroscopy in air and hydrogen atmospheres. The thermal expansion coefficients (TECs) of samples before and after reduction were measured using a dilatometer. The electrochemical characteristics of cell with designed anodic materials were analyzed to evaluate the feasibility for anodic application. The results show that no significant reaction between NiO and LSGM is detected for samples sintered at 1000 °C for 10 h, but when the samples were sintered at 1050 °C for 10 h, the impurity phase LaNiO3 was detected. For samples after reduction, the impurity phase content tends to increase with increasing Ni content. Adding of Cu can effectively reduce the reaction between Ni and LSGM. The electronic conduction characteristics have been displayed for NiO-CuO-LSGM after reduction. The TECs of Ni-Cu-LSGM are compatible with LSGM electrolyte. However, lacking of electrocatalytic activity of Cu leads to higher anode overpotentials and smaller exchange current density. The Ni-Cu-LSGM is not thought to be a suitable anode material for intermediate-temperature LaGaO3-based solid oxide fuel cells operating below 800 °C. The catalytic activity of this anodic material may be further improved through adding appropriate amount of Sm2O3-doped CeO2 to Ni-Cu-LSGM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 393, Issues 1â2, 3 May 2005, Pages 292-298
Journal: Journal of Alloys and Compounds - Volume 393, Issues 1â2, 3 May 2005, Pages 292-298
نویسندگان
Tianmin He, Pengfei Guan, Ligong Cong, Yuan Ji, Han Sun, Jinxia Wang, Jiang Liu,