Oxygen Reduction Activity of Lanthanum Strontium Nickel Ferrite
Journal Article
·
· Electrochemical and Solid-State Letters, 6(6):A121-A124
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 was found to increase 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 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.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 15010179
- Report Number(s):
- PNNL-SA-38106; AA2530000
- Journal Information:
- Electrochemical and Solid-State Letters, 6(6):A121-A124, Journal Name: Electrochemical and Solid-State Letters, 6(6):A121-A124
- Country of Publication:
- United States
- Language:
- English
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