Oxygen reduction activity of lanthanum strontium nickel ferrite

Gregory W. Coffey, John S. Hardy, Larry R. Pederson, Peter C. Rieke, Edwin C. Thomsen

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The reduction of oxygen on nickel-doped lanthanum strontium ferrite was studied by current interrupt cyclic voltammetry. Nickel doped on the B site of the perovskite ranged from 0 to 40%. Nickel strongly influenced the sintering of the films. The minimum temperature at which a stable adherent robust film could be formed increased with nickel content. The electrochemical performance for reduction of oxygen was compared with nickel content. Undoped lanthanum strontium ferrite consistently showed greater activity than the doped materials. The data were further analyzed to obtain the exchange current density as a function of temperature and then further analyzed to obtain the activation energy and pre-exponential factor. These values did not correlate with nickel composition but did correlate with one another. The variation in performance was tentatively attributed to subtle variations in microstructure.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume6
Issue number6
DOIs
Publication statusPublished - Jun 2003
Externally publishedYes

Fingerprint

Lanthanum
Strontium
Nickel
lanthanum
strontium
Ferrite
ferrites
Thermodynamic properties
nickel
Oxygen
oxygen
Perovskite
Cyclic voltammetry
nickel ferrite
sintering
Current density
Sintering
Activation energy
current density
activation energy

ASJC Scopus subject areas

  • Electrochemistry
  • Materials Science(all)

Cite this

Coffey, G. W., Hardy, J. S., Pederson, L. R., Rieke, P. C., & Thomsen, E. C. (2003). Oxygen reduction activity of lanthanum strontium nickel ferrite. Electrochemical and Solid-State Letters, 6(6). https://doi.org/10.1149/1.1568174

Oxygen reduction activity of lanthanum strontium nickel ferrite. / Coffey, Gregory W.; Hardy, John S.; Pederson, Larry R.; Rieke, Peter C.; Thomsen, Edwin C.

In: Electrochemical and Solid-State Letters, Vol. 6, No. 6, 06.2003.

Research output: Contribution to journalArticle

Coffey, Gregory W. ; Hardy, John S. ; Pederson, Larry R. ; Rieke, Peter C. ; Thomsen, Edwin C. / Oxygen reduction activity of lanthanum strontium nickel ferrite. In: Electrochemical and Solid-State Letters. 2003 ; Vol. 6, No. 6.
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