Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2019
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2019
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| Online Access: | https://hdl.handle.net/1721.1/122158 |
| _version_ | 1826205701766119424 |
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| author | Chmielowiec, Brian John. |
| author2 | Antoine Allanore. |
| author_facet | Antoine Allanore. Chmielowiec, Brian John. |
| author_sort | Chmielowiec, Brian John. |
| collection | MIT |
| description | Thesis: Sc. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2019 |
| first_indexed | 2024-09-23T13:17:13Z |
| format | Thesis |
| id | mit-1721.1/122158 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T13:17:13Z |
| publishDate | 2019 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1221582019-09-20T03:02:34Z Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes Chmielowiec, Brian John. Antoine Allanore. Massachusetts Institute of Technology. Department of Materials Science and Engineering. Massachusetts Institute of Technology. Department of Materials Science and Engineering Materials Science and Engineering. Thesis: Sc. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2019 Cataloged from PDF version of thesis. Includes bibliographical references. The current interrupt and galvanostatic electrochemical impedance spectroscopy techniques were utilized to characterize the ohmic, charge transfer, and mass transfer over-potential behavior of gas evolving electrodes in aqueous, molten chloride, and molten sulfide electrolyte solutions under steady-state natural convective flow conditions as a means to gain access to thermodynamic, physicochemical, and hydrodynamic properties of these systems. Previous efforts purposely chose operating conditions under which one or more sources of overpotential were negligible to facilitate analysis of the total overpotential observed at the expense of maintaining operating conditions of industrial relevance. This work represents a preliminary effort to understand the fundamental material properties of a molten sulfide electrolyte, by application of materials-blind electrochemical techniques that were validated on previously well characterized systems-oxygen evolution in aqueous KOH and chlorine evolution in eutectic LiCl-KCl-CsCl. For the first time, values are reported for the saturation concentration of dissolved sulfur gas, an approximate range of Schmidt number for dissolved sulfur, and natural convection limiting current densities in a molten sulfide electrolyte consisting of Cu₂S-BaS-La₂S₃ at 1300°C. by Brian John Chmielowiec. Sc. D. Sc.D. Massachusetts Institute of Technology, Department of Materials Science and Engineering 2019-09-16T21:17:45Z 2019-09-16T21:17:45Z 2019 2019 Thesis https://hdl.handle.net/1721.1/122158 1117771440 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 120 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Materials Science and Engineering. Chmielowiec, Brian John. Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes |
| title | Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes |
| title_full | Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes |
| title_fullStr | Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes |
| title_full_unstemmed | Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes |
| title_short | Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes |
| title_sort | electrochemical engineering considerations for gas evolution in molten sulfide electrolytes |
| topic | Materials Science and Engineering. |
| url | https://hdl.handle.net/1721.1/122158 |
| work_keys_str_mv | AT chmielowiecbrianjohn electrochemicalengineeringconsiderationsforgasevolutioninmoltensulfideelectrolytes |