An Efficient Electron-Blocking Interlayer Induced by Metal Ion Diffusion for SOFC Based on Y-Doped Ceria Electrolyte

作者：Cao, Jiafeng; Liu, Yi; Huang, Xianshan; Ji, Yuexia^*

来源：ACS Applied Materials & Interfaces, 2018, 10(12): 10528-10535.

DOI：10.1021/acsami.7b18924

• solid oxide fuel cells
• internal electronic leakage
• Y-doped ceria
• electron-blocking layer
• in situ reaction

To suppress the internal electronic leakage at ceria-based electrolyte, a novel electron-blocking layer consisting of doped BaCe0.8Y0.2O3-delta was fabricated in situ at the interface of Ba-containing anode and Y-doped ceria electrolyte. The anode-supported full cell based on Y0.2Ce0.8O1.9 (YDC20) electrolyte presents a remarkable peak power density of 814 mW/cm(2) as well as an open-circuit voltage of 1.0 V at 650 degrees C, which are much higher than those of the cells with Gd0.1Ce0.9O1.9 (GDC10) electrolyte (453 mW/cm(2) at 650 degrees C) and BaCe0.8Y0.2O3-delta vertical bar Y0.2Ce0.8O1.9 (BCY vertical bar YDC20) bilayered electrolyte (419 mW/cm(2) at 650 degrees C). The efficient promotion of the electron-blocking interlayer with high oxygen ionic conductivity is considered as the main reason for the improved performance of YDC20-based solid oxide fuel cell. The composition and the microstructure of the electron-blocking interlayer are further analyzed by scanning

• 出版日期2018-3-28
• 单位安徽工业大学