http://scholars.ntou.edu.tw/handle/123456789/20574
標題: | Microwave effect on barium strontium ferrate and co-fired fuel cells | 作者: | Wang, Yao-Ming Tsai, Shun-Feng Kuo, Yu-Lin Chang, Kuang-Hui Chen, Tai-Cheng Chang, Horng-Yi |
關鍵字: | Microwave effect;Barium strontium ferrate;Core-shellElectrode polarization;Electrode polarization | 公開日期: | 19-七月-2018 | 出版社: | PERGAMON-ELSEVIER SCIENCE LTD | 卷: | 43 | 期: | 29 | 起(迄)頁: | 13393-13405 | 來源出版物: | INT J HYDROGEN ENERG | 摘要: | The microwave effect on barium strontium ferrate (BSF) was determined, and core-shell BSF-xCe cathode was co-fired with ceria-based electrolyte in a focused microwave cavity. The solubility of cerium (Ce) in BSF was up to x = 10 mol%. The grain size of the microwave sintered BSF was smaller. The conductivity of BSF-20Ce cathode with the lower transition temperature was significantly higher than that obtained by conventional sintering. The ohmic (R-ohm) and electrode polarization (R-p) resistances of the fuel cells were significantly reduced. The open-circuit voltage and peak power density of the microwave co-fired fuel cells increased with the Ce coatings. The high ionic conductivity at high operation temperature was due to the generation of more oxygen vacancies without clustering, caused by the effective absorption of microwave by the low valence iron oxide. Thus, the enhanced diffusion of Ce and the reduced R-p and R-ohm by the microwave energy improved the performance of fuel cells. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/20574 | ISSN: | 0360-3199 | DOI: | 10.1016/j.ijhydene.2018.05.018 |
顯示於: | 輪機工程學系 07 AFFORDABLE & CLEAN ENERGY |
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