Journal
SOLID STATE IONICS
Volume 346, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2019.115215
Keywords
Modifying additive; Lanthanum nickelate; Polarization resistance; Rate-determining stage
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Funding
- Russian Science Foundation [16-13-00053]
- Act 211 of the Government of the Russian Federatio [02 A03.21.0006]
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The effect of the La2NiO4+delta and Pr2NiO4+delta modifying additives on the electrochemical performance of the La2NiO4+delta oxygen electrodes has been investigated. It has been shown that the introduction of the additives reduces the polarization resistance of the electrodes. The lowest value of the polarization resistance has been obtained for the La2NiO4+delta electrodes modified with Pr2NiO4+delta, which was 0.44 Omega cm(2) at 650 degrees C in an air atmosphere. The introduction of modifying additives is shown to have a significant impact on the electrode reaction stage associated with the oxygen exchange. Probable reasons for the phenomena are discussed.
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