Generalized electrical conductivity relaxation approach to determine electrochemical kinetic properties for MIECs
作者： Fei He , Yanmei Jiang , Chunlei Ren , Guohui Dong , Yun Gan
DOI: 10.1016/J.SSI.2016.10.006
关键词:
摘要: Abstract Electrical conductivity relaxation (ECR) technique has been widely used to determine kinetic properties of mixed ionic and electronic conductors (MIECs). However, this is only applicable for reliable determination parameters within a confined range chemical Biot numbers. Since the materials are not known priori, imposes great difficulties on how verify obtained from ECR data. Further due ill-posed nature problem, measurement noise could lead significant uncertainties in determined parameters. Herein generalized (g-ECR) approach developed by coherently incorporating multiple measurements simultaneously into an inverse algorithm. This new able improve accuracy calculated attenuate induced over wider numbers than with single measurement. The capability both reducing increasing accurate parameter can be achieved number employed responses. A case study PrBa(Co 0.75 Fe 0.25 ) 2 O 5 + δ performed mixture gas N /Air at 600 °C. evaluated using g-ECR approach. rationality instead verified.
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