Fabrication of one-step co-fired proton-conducting solid oxide fuel cells with the assistance of microwave sintering |
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Authors: | Bin Wang Lei Bi XS Zhao |
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Affiliation: | 1. Institute of Materials for Energy and Environment, and College of Materials Science and Engineering, Qingdao University, Ningxia Road No. 308, Qingdao 266071, China;2. School of Chemical Engineering, The University of Queensland, St Lucia, QLD 4072, Australia |
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Abstract: | A microwave sintering technique is reported for fabricating co-sintered proton-conducting solid oxide fuel cells. With this method, high-quality ceramic electrolyte membranes can be prepared at 1100?°C, thus enabling the fabrication of entire cells in a single step. The microwave sintering method not only enhances electrolyte densification but also improves the cathode/electrolyte interface, which is critical for improving fuel cell performance. The power output of the co-sintered cell prepared under the microwave conditions (up to 449?mW?cm?2 at 700?°C) was significantly higher than that of the cell fabricated using the traditional co-sintering method (approximately 292?mW?cm?2 at the same temperature). Electrochemical analysis revealed that the enhanced electrolyte density and the improved cathode/electrolyte interface achieved by using the microwave sintering technique decrease both the ohmic resistance and the polarisation resistance of the cell, leading to good fuel cell performance. |
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Keywords: | Co-sintering Proton conductor Microwave sintering Solid oxide fuel cell |
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