کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7887011 | 1509789 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Perovskite SrFe1-xTixO3-δ (xâ¯<â¯= 0.1) cathode for low temperature solid oxide fuel cell
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Stable and compatible cathode materials are a key factor for realizing the low-temperature (LT, â¤600â¯Â°C) operation and practical implementations of solid oxide fuel cells (SOFCs). In this study, perovskite oxides SrFe1-xTixO3-δ (xâ¯< = 0.1), with various ratios of Ti doping, are prepared by a sol-gel method for cathode material for LT-SOFCs. The structure, morphology and thermo-gravimetric characteristics of the resultant SFT powders are investigated. It is found that the Ti is successfully doped into SrFeO3-δ to form a single phase cubic perovskite structure and crystal structure of SFT shows better stability than SrFeO3-δ. The dc electrical conductivity and electrochemical properties of SFT are measured and analysed by four-probe and electrochemical impedance spectra (EIS) measurements, respectively. The obtained SFT exhibits a very low polarization resistance (Rp), .01 Ωcm2 at 600â¦C. The SFT powders using as cathode in fuel cell devices, exhibit maximum power density of 551â¯mWâ¯cmâ2 with open circuit voltage (OCV) of 1.15â¯V at 600â¦C. The good performance of the SFT cathode indicates a high rate of oxygen diffusion through the material at cathode. By enabling operation at low temperatures, SFT cathodes may result in a practical implementation of SOFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 9, 15 June 2018, Pages 10266-10272
Journal: Ceramics International - Volume 44, Issue 9, 15 June 2018, Pages 10266-10272
نویسندگان
Naveed Mushtaq, Chen Xia, Wenjing Dong, G. Abbas, Rizwan Raza, Amjad Ali, Sajid Rauf, Baoyuan Wang, Jung-Sik Kim, Bin Zhu,