Pikalova Elena, Osinkin Denis, Kalinina Elena
Laboratory of Solid Oxide Fuel Cells, Institute of High Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620137, Russia.
Department of Environmental Economics, Graduate School of Economics and Management, Ural Federal University, Yekaterinburg 620002, Russia.
Membranes (Basel). 2022 Jun 30;12(7):682. doi: 10.3390/membranes12070682.
In this work, a technology was developed for the formation of BaCeSmO+1 wt% CuO (BCS-CuO)/CeSmO (SDC) thin-film electrolyte membranes for intermediate-temperature solid oxide fuel cells (IT-SOFCs) on porous NiO-BCS-CuO anode substrates using direct electrophoretic deposition (EPD). The effect of increasing the zeta potential when modifying the base suspension of a micro-sized SDC-gn powder (glycine-nitrate method) with the addition of a SDC-lec nanopowder (laser evaporation-condensation) was investigated. Dependences of the current strength on the deposition time and the deposited weight on the EPD voltage were obtained, and evolution of the morphology of the coatings during the modification of the SDC-gn suspension and a suspension of BCS-CuO powder was studied. The compatibility of the shrinkage kinetics of the SDC, the BCS-CuO electrolyte coatings and the NiO-BCS-CuO anode substrate was studied during the high-temperature sintering. Dense BCS-CuO/SDC films of different thicknesses were obtained for the first time on porous NiO-BCS-CuO anode substrates and comprehensive microstructural and electrochemical studies were carried out. The developed technology can be applied to the formation of anode-supported SOFCs with thin-film electrolyte membranes.
在这项工作中，开发了一种技术，用于在多孔NiO-BCS-CuO阳极基板上，通过直接电泳沉积（EPD）制备用于中温固体氧化物燃料电池（IT-SOFCs）的BaCeSmO+1 wt% CuO（BCS-CuO）/CeSmO（SDC）薄膜电解质膜。研究了在微米尺寸的SDC-gn粉末（甘氨酸-硝酸盐法）的基础悬浮液中添加SDC-lec纳米粉末（激光蒸发-冷凝）时增加zeta电位的效果。获得了电流强度对沉积时间的依赖性以及沉积重量对EPD电压的依赖性，并研究了在SDC-gn悬浮液和BCS-CuO粉末悬浮液改性过程中涂层形态的演变。研究了高温烧结过程中SDC、BCS-CuO电解质涂层和NiO-BCS-CuO阳极基板收缩动力学的兼容性。首次在多孔NiO-BCS-CuO阳极基板上获得了不同厚度的致密BCS-CuO/SDC薄膜，并进行了全面的微观结构和电化学研究。所开发的技术可应用于具有薄膜电解质膜的阳极支撑型SOFCs的制备。
