Polarization Behavior of the Nickel Electrode in Molten Sulfides
| Autor: | C. T. Liu, O. F. Devereux |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
chemistry.chemical_classification
Sulfide Renewable Energy Sustainability and the Environment Inorganic chemistry chemistry.chemical_element Electrolyte Overpotential Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Electrochemical cell Nickel chemistry.chemical_compound chemistry Electrode Materials Chemistry Electrochemistry Dissolution Polysulfide |
| Zdroj: | Journal of The Electrochemical Society. 131:247-251 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.2115557 |
| Popis: | Polarization behavior of the Ni-200 electrode in 75 pct Na2S-25 pct Fes at 1000 C under H2-0.32 pct H2S at 1 atm is linear over an overpotential range of -600 to 600 mV and is consistent with resistance polarization in the electrolyte. Similar polarization behavior of the 304 stainless steel eletrode and of the Ni-200 electrode in 85 pct Na2S-15 pct NiS suggests that the charge transfer mechanism is a sulfide/polysulfide exchange reaction. Nonelectrodic dissolution of nickel in the 75 pct Na2S-25 pct FeS melt occurs at 1.6 x 10 to the -6th g/sq cm s, apparently due to oxidation by H2S. Anomalously high dissolution rates are attributed to trace polysulfide. 25 references. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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