کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1297151 1498370 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
From powder properties to fuel cell performance – A holistic approach for SOFC cathode development
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
From powder properties to fuel cell performance – A holistic approach for SOFC cathode development
چکیده انگلیسی

This paper provides a short overview on the different aspects of SOFC materials, especially of new cathode materials, ranging from considerations of material properties to long-term phenomena after cell operation. Special emphasis is laid on the reproducible manufacturing of cathode microstructures, which has to be optimised for each individual composition or powder quality. If this is not performed a comparison of various cathode materials can be misleading. The microstructure can be tailored by varying the sintering conditions, which results in different particle sizes. Besides the improvement of power density, the long-term stability of cathodes is discussed in more detail. For (La,Sr)(Co,Fe)O3 (LSCF) cathodes, the predominant factor determining voltage losses during cell operation is the temperature. The mechanism responsible for voltage deterioration is a slow decomposition of the LSCF perovskite due to partial de-mixing of strontium.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 179, Issues 27–32, 30 September 2008, Pages 1509–1515
نویسندگان
, , ,