Electrochemical behavior of graphite anode during anode effect in cryolite molten salts
| Autor: | Zhongning Shi, Xian-wei Hu, Zhaowen Wang, Bingliang Gao, Gong Chen |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Passivation Inorganic chemistry Metals and Alloys chemistry.chemical_element Electrolyte Geotechnical Engineering and Engineering Geology Condensed Matter Physics Electrochemistry Cryolite Anode chemistry.chemical_compound chemistry Materials Chemistry Cyclic voltammetry Molten salt Carbon |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 22:2306-2311 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(11)61464-7 |
| Popis: | Anodic electrochemical behavior was studied on graphite anode at 1000 °C in cryolite-alumina molten salt by means of cyclic voltammetry. The high current peak in a typical cyclic voltammogram was discussed. It is considered that a type of oxyfluoroaliminate complex anions reacts with carbon to form a high-resistance CF film on the anode surface at a high potential. The passivation potential is 3.28 V in 0.5% alumina-containing electrolyte, and the passivation potential increases with alumina content increasing which indicates that the alumina content determines the anodic process in the cryolite-alumina molten salt system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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