Preparation and Characterization of the LaNi0.6Fe0.4O3-δ Cathode for Intermediate Temperature Solid Oxide Fuel Cell

Authors

Hang LIU
Bo HUANG
Xin-Jian ZHU

Corresponding Author

Bo HUANG(huangbo2k@hotmail.com)

Abstract

The LaNi0.6Fe0.4O3-δ as cathode material for intermediate temperature solid oxide fuel cell was prepared using a combustion synthesis technique. The X-ray diffraction (XRD) pattern showed that the single-phase LaNi0.6Fe0.4O3-δ perovskite could be obtained after heat treatment at 600°C. The TEM and SEM images of the synthesized powders revealed that the grains were 50-100nm. According to the electrochemical impedance spectra (EIS), the polarization resistance of the symmetric cell LaNi0.6Fe0.4O3-δ/ScSZ/LaNi0.6Fe0.4O3-δ sintered at 1050°C was the smallest (0.70Ω?cm2, 0.27Ω?cm2 and 0.12Ω?cm2 at 750°C, 800°C and 850°C, respectively). In the presence of the Fe-Cr alloy interconnection at 750°C, the cathode performance showed that, with the time increasing, Cr2O3(s) deposited at the LaNi0.6Fe0.4O3?δ/ScSZ interface suppressed the diffusion of active particle and increased the polarization resistance.

Graphical Abstract

Keywords

solid oxide fuel cell, cathode, Fe-Cr alloy, Cr deposition, impedance spectroscopy

DOI Link

https://doi.org/10.61558/2993-074X.2865

Publication Date

2011-11-28

Online Available Date

2011-10-20

Revised Date

2011-09-09

Received Date

2011-08-19

Recommended Citation

Hang LIU, Bo HUANG, Xin-Jian ZHU. Preparation and Characterization of the LaNi0.6Fe0.4O3-δ Cathode for Intermediate Temperature Solid Oxide Fuel Cell[J]. Journal of Electrochemistry, 2011 , 17(4): Article 12.
DOI: 10.61558/2993-074X.2865
Available at: https://jelectrochem.xmu.edu.cn/journal/vol17/iss4/12