کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7718637 | 1497483 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal stability study of La0.9Sr0.1Ga0.8Mg0.2O2.85-(Li/Na)2CO3 composite electrolytes for low-temperature solid oxide fuel cells
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermal stability study of La0.9Sr0.1Ga0.8Mg0.2O2.85-(Li/Na)2CO3 composite electrolytes for low-temperature solid oxide fuel cells Thermal stability study of La0.9Sr0.1Ga0.8Mg0.2O2.85-(Li/Na)2CO3 composite electrolytes for low-temperature solid oxide fuel cells](/preview/png/7718637.png)
چکیده انگلیسی
Novel composite materials based on La0.9Sr0.1Ga0.8Mg0.2O2.85 (LSGM) and a binary eutectic carbonates (52 mol% Li2CO3:48 mol% Na2CO3) are potential electrolytes for low-temperature solid oxide fuel cells (LTSOFCs) operating at 400-600 °C. However, thermal stability of the LSGM-(Li/Na)2CO3 composites remains in doubt due to the molten state of the carbonates at elevated temperature. In this paper, XRD, SEM, TGA and EIS were employed for thermal ageing and cycling studies of the LSGM-(Li/Na)2CO3 composites. XRD and SEM results showed that ageing induced a slight effect on the structure and morphology of the composites. TGA and EIS results indicated that the composites had a good stability during cycling. The LSGM-20 wt% (Li/Na)2CO3 sample showed a relatively stable conductivity (7-9 Ã 10â2 S cmâ1) during a 650 h measurement under air at 600 °C. Single cell based on the composite electrolytes was reported for the first time, a maximum power density of 617 W cmâ2 and the open circuit voltage (OCV) of 1.01 V were achieved at 600 °C for the composite containing 20 wt% carbonates. The notable thermal stability together with fairly high performance emphasize the promise of LSGM-(Li/Na)2CO3 composite electrolytes for long-term LTSOFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 26, 3 September 2014, Pages 14397-14401
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 26, 3 September 2014, Pages 14397-14401
نویسندگان
Fucheng Xie, Cheng Wang, Zongqiang Mao, Zhongliang Zhan,