A comparative EIS study on cermet and platinum anodes for the electrolytic production of aluminum
Conference
·
OSTI ID:5266243
Electrochemical impedance spectra (EIS) of NiO-NiFe{sub 2}O{sub 4}-Cu cermet anodes in alumina-saturated molten cryolite at anodic potentials above the decomposition potentials above the decomposition potential of alumina exhibited a loop with a characteristic frequency of about 1 Hz. A similar feature was observed using platinum anodes under the same experimental conditions. Analysis of these data suggests the loop was due to gas bubbling. Features associated with charge-transfer processes were not sufficiently resolved to determine the corrosion properties of the cermet anode.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5266243
- Report Number(s):
- PNL-SA-20305; CONF-920514--4; ON: DE92015091
- Country of Publication:
- United States
- Language:
- English
Similar Records
An electrochemical impedance study on cermet anodes in alumina-saturated molten cryolite
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Journal Article
·
Mon Jul 01 00:00:00 EDT 1991
· Journal of the Electrochemical Society; (United States)
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OSTI ID:7200726
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Related Subjects
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360205* -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALUMINIUM
ANODES
CERMETS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPOSITE MATERIALS
COPPER
CORROSION
ELECTRODES
ELECTROLYSIS
ELEMENTS
IMPEDANCE
LYSIS
MATERIALS
METALS
NICKEL COMPOUNDS
NICKEL OXIDES
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
PRODUCTION
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
360101 -- Metals & Alloys-- Preparation & Fabrication
360205* -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALUMINIUM
ANODES
CERMETS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPOSITE MATERIALS
COPPER
CORROSION
ELECTRODES
ELECTROLYSIS
ELEMENTS
IMPEDANCE
LYSIS
MATERIALS
METALS
NICKEL COMPOUNDS
NICKEL OXIDES
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
PRODUCTION
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS