This study presents the co-sintering of anode-supported GDC/NiO-GDC Solid Oxide Fuel Cells (SOFCs) prepared by the Cold Sintering Process (CSP). A layer (<100 μm) of GDC electrolyte powders was first spread on a circular piece of filter paper cut at the die punch diameter size, then put on a relatively thick, porous NiO-GDC anode powder before CSP. The bi-layer was first cold-sintered at room temperature (RT), a very rare case in the literature, and then post-sintered at 1100 °C, which was much lower than the ones reported in the literature by using conventional furnaces. In the end, GDC electrolyte densities were found to be between 95 and 97% of their theoretical value while the NiO-GDC anode was sintered to gain mechanical strength but remained porous as desired. SOFCs constructed from these cold-sintered GDC/NiO-GDC bilayers exhibited an open circuit potential of 0.85 V at 750 °C, confirming dense and gas-tight GDC electrolytes. A promising polarization resistance of 0.15 Ω.cm was obtained from the cold-sintered Ni-GDC anode at 750 °C.

中文翻译：

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阳极支撑固体氧化物燃料电池中冷烧结对 NiO-GDC 阳极与 GDC 电解质烧结收缩匹配的影响

本研究介绍了通过冷烧结工艺 (CSP) 制备的阳极支撑 GDC/NiO-GDC 固体氧化物燃料电池 (SOFC) 的共烧结。首先将一层（<100μm）GDC电解质粉末铺在按冲头直径尺寸切割的圆形滤纸上，然后在CSP之前放置相对较厚的多孔NiO-GDC阳极粉末。双层首先在室温（RT）下冷烧结，这是文献中非常罕见的情况，然后在1100°C下进行后烧结，该温度远低于文献中报道的使用传统炉子的温度。最后，发现 GDC 电解质密度在其理论值的 95% 至 97% 之间，而 NiO-GDC 阳极经过烧结以获得机械强度，但仍保持所需的多孔性。由这些冷烧结 GDC/NiO-GDC 双层构建的 SOFC 在 750 °C 下表现出 0.85 V 的开路电势，证实了致密且气密的 GDC 电解质。在 750 °C 下冷烧结的 Ni-GDC 阳极获得了 0.15 Ω.cm 的良好极化电阻。