Evaluation of the reactive-sintered (Mn,Co)3O4 spinel layer for SOFC cathode-side contact application |
| |
| Affiliation: | 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2019 Jialuo Road, Shanghai 201800, PR China;2. Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, 2019 Jialuo Road, Shanghai 201800, PR China;3. Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian 116023, PR China;4. Department of Mechanical Engineering, Tennessee Technological University, Cookeville, TN, 38501, USA |
| |
| Abstract: | Simulated interconnect/contact/cathode cells are used to investigate the performance of different contact precursors that are reactively sintered into spinel contact layers with nominal compositions of Mn1.5Co1.5O4 and MnCo2O4, respectively. Both bare and Mn1.5Co1.5O4-coated interconnects are employed in this study, where the Mn1.5Co1.5O4 interconnect coating is also prepared via reactive sintering. The isothermal area specific resistance (ASR) of the test cells is evaluated at 800 °C in air for 2000 h. All the test cells exhibited excellent electrical behavior with ASR values of less than 10 mΩ·cm2 during the measurement. The presence of the dense Mn1.5Co1.5O4 coating leads to a better ASR performance. Cross-sectional observation of the test cells is conducted to assess the compatibility of the contact layer with adjacent components as well as its effectiveness in suppressing chromia scale growth and blocking Cr migration from the interconnect to the cathode. |
| |
| Keywords: | Solid oxide fuel cell Contact layer Spinel Reactive sintering Area specific resistance |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
