| Autor: |
Mehran Dadsetan, Kenneth G. Latham, Boran Kumral, Mohammad Fawaz Khan, Mia Scott, Tirthankar Mitra, Ali Naseri, Sama Manzoor, Erin R. Bobicki, Tobin Filleter, Maria‐Magdalena Titirici, Murray J. Thomson |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Carbon Trends, Vol 12, Iss , Pp 100283- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2667-0569 |
| DOI: |
10.1016/j.cartre.2023.100283 |
| Popis: |
Methane pyrolysis is a widely used technique for producing hydrogen and valuable carbon materials. Among these materials are carbon films, which have a diverse range of properties that make them useful for various applications. This study focuses on synthesizing a new type of carbon film through a microwave-driven methane pyrolysis process. The resulting metallic-like carbon film deposits on a polished quartz substrate and detaches as it thickens. We conducted a thorough characterization of the film's properties, using different techniques to study its surface morphology and structural features. Our findings show that the carbon film has a smooth surface texture and a semi-graphitic internal structure, with 78% of the carbon atoms exhibiting sp2 bonding as revealed by X-ray photoelectron spectroscopy. X-ray diffraction analysis further confirms the presence of microcrystalline carbon fragments within the film. Additionally, conductivity measurements using a conductive-atomic force microscope demonstrate the carbon film's remarkable electrical conductivity, comparable to that of gold and silver metals. The electrochemical measurements indicate that the carbon film's high conductivity and free-standing nature make it a promising candidate for use as a direct active material in sodium-ion batteries. This is because the film does not require binders or conductive agents, which can improve battery performance. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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