论文标题
固体氧化物电解堆栈在动态载荷循环下的耐用性以生产合成
Durability of solid oxide electrolysis stack under dynamic load cycling for syngas production
论文作者
论文摘要
在H2O + CO2共旋转条件下测试了6细胞固体氧化物电解堆栈。堆栈中使用的细胞由镍含量稳定的锆石（Ni-i-ysz）燃料电极，YSZ电解质和消田氏肌cobaltite-gadolinium掺杂陶瓷（LSC-GDC）复合氧气电极。这项研究的目的是研究在动态载荷条件下操作的堆栈耐用性，以模拟风能供电的SOEC堆栈进行合成气体的产生。在1000小时的操作中，堆栈的降解观察到小于1％/1000小时。详细的电化学分析显示出恒定的欧姆电阻，表明堆栈中的接触完整。仅观察到少量降解，这主要是由于燃料电极工艺。总体堆栈电压降解率为0.8％/1000 h。
A 6-cell solid oxide electrolysis stack was tested under H2O + CO2 co-electrolysis conditions. The cells used in the stack consisted of a nickel-yttria stabilized zirconia (Ni-YSZ) fuel electrode, YSZ electrolyte and lanthanum strontium cobaltite-gadolinium doped ceria (LSC-GDC) composite oxygen electrode. The aim of this study was to investigate the stack durability when operated under dynamic load conditions simulating a wind energy powered SOEC stack for synthesis gas production. The degradation of the stack was observed to be less than 1%/1000 h in terms of area specific resistance during the 1000 hours operation. Detailed electrochemical analysis revealed a constant ohmic resistance, indicating intact contact in the stack. Only minor degradation was observed, mainly due to the fuel electrode process. The overall stack voltage degradation rate was 0.8%/1000 h.
