Journal
FUEL CELLS
Volume 13, Issue 1, Pages 34-41Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/fuce.201200091
Keywords
Cathode; Lanthanum Tungstate; Pr2NiO4; Proton Conductivity; Solid Oxide Fuel Cells
Categories
Funding
- FP7 Project EFFIPRO Efficient and robust fuel cell with novel ceramic proton conducting electrolyte [227560]
Ask authors/readers for more resources
La6WO12, recently reformulated La28xW4+xO54+3x/2 exhibits a good level of protonic conductivity and chemical stability toward acidic gases. It is therefore a potential material for use as electrolyte in proton conducting solid oxide fuel cells (PC-SOFC). Pr2NiO4 is a cathode material tested for SOFC in which proton conductivity has been demonstrated recently. In this study, compatibility between lanthanum tungstate and praseodymium nickelate has been investigated by powder X-ray diffraction (XRD). Microstructure of symmetrical cells based on the lanthanum tungstate and Pr2NiO4 has been analyzed by scanning electron microscopy (SEM) and performance of the cathode has been evaluated by electrochemical impedance spectroscopy (EIS) through the value of the area specific resistance (ASR). To optimize the ASR value, different parameters were modified such as the Pr2NiO4 calcination temperature, the firing temperature of the symmetrical cells, the thickness of the Pr2NiO4 layer, and the composition of the composite cathode. An ASR value of 0.46cm2 at 700 degrees C has been obtained showing that lanthanum tungstate electrolyte associated with Pr2NiO4 cathode is a promising half cell for application in PC-SOFC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available