Characterization of Degradation in Nickel Impregnated Scandia-Stabilize Zirconia Electrodes during Isothermal Annealing
Characterization of Degradation in Nickel Impregnated Scandia-Stabilize Zirconia Electrodes during Isothermal Annealing
复制标题
等温退火过程中镍浸渍氧化钪稳定氧化锆电极的降解表征
DOI：
10.1149/2.0821709jes
复制
发表时间：
2017
影响因子：
3.9
通讯作者：
N. Brandon
中科院分区：
文献类型：
--
作者：
Jingyi Chen;A. Bertei;E. Ruiz;A. Atkinson;N. Brandon
Thisstudyinvestigatesthestabilityofnickel-impregnatedscandia-stabilizezirconiacompositeelectrodesduringisothermalannealingattemperaturesfrom600to950 ◦ C in a humidified hydrogen atmosphere (3 vol % water vapor). Typically an initial rapid degradation of the electrode during the first 17 h of annealing is revealed by both an increase in polarization resistance and a fall in electronic conductivity. Secondary electron images show a shift in nickel particle size toward larger values after 50 h of annealing. The declining electrochemical performance is hence attributed to nickel coarsening at elevated temperatures. Nickel coarsening has two microstructural effects: breaking up nickel percolation; and reducing the density of triple phase boundaries. Their impact on electrode area specific resistance is explored using a physical model of electrode performance which relates the macroscopic electrochemical performance to measurable microstructural parameters. the
用于固体氧化物电池应用的渗镍 GDC 电极的表征
影响因子：
3.9
作者：
Lomberg M
通讯作者：
Lomberg M
影响因子：
7.2
作者：
A. Bertei;E. Ruiz-Trejo;Farid Tariq;V. Yufit;A. Atkinson;N. Brandon
通讯作者：
A. Bertei;E. Ruiz-Trejo;Farid Tariq;V. Yufit;A. Atkinson;N. Brandon