Raman Spectroscopy Studies of Carbon-Based Cathode Materials during Aluminum Electrolysis
The sodium expansion and creep strain of semi-graphitic cathodes are investigated using a modified Rapoport apparatus. To further understanding of the sodium and bath penetration damage processes, the impact of external stress fluence on the carbon cathode microstructure has been defined with XRD an...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2019-12-01
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| Series: | Archives of Metallurgy and Materials |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/113576/PDF/AMM-2019-4-07-Wang.pdf |
| _version_ | 1811220355724869632 |
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| author | Wei Wang Weijie Chen |
| author_facet | Wei Wang Weijie Chen |
| author_sort | Wei Wang |
| collection | DOAJ |
| description | The sodium expansion and creep strain of semi-graphitic cathodes are investigated using a modified Rapoport apparatus. To further understanding of the sodium and bath penetration damage processes, the impact of external stress fluence on the carbon cathode microstructure has been defined with XRD analysis, Raman spectroscopy and scanning electron microscope (SEM). Graphite atoms fracture into smaller fragments that are less directional than the pristine platelets, which allows for a possible filling of the cracks that thus develop by the sodium and bath during aluminum electrolysis. The average microcrystalline size (calculated by Raman spectroscopy) is reduced by the deformation. The decreased intensity and widened ‘G’ and ‘D’ peaks in the analysis indicate the poor order of the sheets along the stacking direction while the consistent layered graphite structure is sustained. |
| first_indexed | 2024-04-12T07:40:34Z |
| format | Article |
| id | doaj.art-d8d42b04e04949238c6ea59d18d1d02d |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-04-12T07:40:34Z |
| publishDate | 2019-12-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-d8d42b04e04949238c6ea59d18d1d02d2022-12-22T03:41:50ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092019-12-01vol. 64No 412571261https://doi.org/10.24425/amm.2019.130088Raman Spectroscopy Studies of Carbon-Based Cathode Materials during Aluminum ElectrolysisWei Wanghttps://orcid.org/0000-0002-8919-4010Weijie ChenThe sodium expansion and creep strain of semi-graphitic cathodes are investigated using a modified Rapoport apparatus. To further understanding of the sodium and bath penetration damage processes, the impact of external stress fluence on the carbon cathode microstructure has been defined with XRD analysis, Raman spectroscopy and scanning electron microscope (SEM). Graphite atoms fracture into smaller fragments that are less directional than the pristine platelets, which allows for a possible filling of the cracks that thus develop by the sodium and bath during aluminum electrolysis. The average microcrystalline size (calculated by Raman spectroscopy) is reduced by the deformation. The decreased intensity and widened ‘G’ and ‘D’ peaks in the analysis indicate the poor order of the sheets along the stacking direction while the consistent layered graphite structure is sustained.https://journals.pan.pl/Content/113576/PDF/AMM-2019-4-07-Wang.pdfaluminum electrolysiscarbon cathoderaman spectroscopycreep deformationsodium expansion |
| spellingShingle | Wei Wang Weijie Chen Raman Spectroscopy Studies of Carbon-Based Cathode Materials during Aluminum Electrolysis Archives of Metallurgy and Materials aluminum electrolysis carbon cathode raman spectroscopy creep deformation sodium expansion |
| title | Raman Spectroscopy Studies of Carbon-Based Cathode Materials during Aluminum Electrolysis |
| title_full | Raman Spectroscopy Studies of Carbon-Based Cathode Materials during Aluminum Electrolysis |
| title_fullStr | Raman Spectroscopy Studies of Carbon-Based Cathode Materials during Aluminum Electrolysis |
| title_full_unstemmed | Raman Spectroscopy Studies of Carbon-Based Cathode Materials during Aluminum Electrolysis |
| title_short | Raman Spectroscopy Studies of Carbon-Based Cathode Materials during Aluminum Electrolysis |
| title_sort | raman spectroscopy studies of carbon based cathode materials during aluminum electrolysis |
| topic | aluminum electrolysis carbon cathode raman spectroscopy creep deformation sodium expansion |
| url | https://journals.pan.pl/Content/113576/PDF/AMM-2019-4-07-Wang.pdf |
| work_keys_str_mv | AT weiwang ramanspectroscopystudiesofcarbonbasedcathodematerialsduringaluminumelectrolysis AT weijiechen ramanspectroscopystudiesofcarbonbasedcathodematerialsduringaluminumelectrolysis |