Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen Battery
Abstract In this work, nitrogen (N)‐doped graphene film is synthesized, as a photo‐catalyst, on one side of the copper foam by chemical vapor deposition and the copper foam is directly used as an electrode after porous Pd@rGO cathode loading to the other side of the foam for the photo‐assisted charg...
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| Format: | Article |
| Language: | English |
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Wiley
2024-01-01
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| Series: | Global Challenges |
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| Online Access: | https://doi.org/10.1002/gch2.202300166 |
| _version_ | 1797357031064076288 |
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| author | Nilay Kaçar Ersu Lökçü Meltem Çayirli Reşat Can Özden Sahin Coskun Cigdem Toparli İbrahim Çelikyürek Mustafa Anik |
| author_facet | Nilay Kaçar Ersu Lökçü Meltem Çayirli Reşat Can Özden Sahin Coskun Cigdem Toparli İbrahim Çelikyürek Mustafa Anik |
| author_sort | Nilay Kaçar |
| collection | DOAJ |
| description | Abstract In this work, nitrogen (N)‐doped graphene film is synthesized, as a photo‐catalyst, on one side of the copper foam by chemical vapor deposition and the copper foam is directly used as an electrode after porous Pd@rGO cathode loading to the other side of the foam for the photo‐assisted charging of the Li‐ion oxygen battery. The amount of urea (CO(NH2)2), which is used as N atom source, is optimized to get maximum photo‐anodic currents from the n‐type graphene films. The optical band gap and the valance band edge potential of the optimized N‐doped graphene film are determined as 2.00 eV and 3.71 VLi+/Li, respectively. X‐ray photoelectron spectra provided that the atomic percent of N atoms in the graphene film is 1.34% and the graphitic, pyrrolic and pyridinic N atom percentages are 54.01%, 42.20% and 3.79%, respectively. The photo‐assisted charging tests indicated that the N‐doped graphene film photo‐catalyst reduced the charging potential significantly even at 1000 mA g−1 (0.1 mA cm−2) current density and improved the cyclic discharge‐charge performance of the Li‐ion oxygen battery considerably. |
| first_indexed | 2024-03-08T14:37:24Z |
| format | Article |
| id | doaj.art-8e8d0fb61ea64e528893af1d33b72df6 |
| institution | Directory Open Access Journal |
| issn | 2056-6646 |
| language | English |
| last_indexed | 2024-03-08T14:37:24Z |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Global Challenges |
| spelling | doaj.art-8e8d0fb61ea64e528893af1d33b72df62024-01-12T03:43:09ZengWileyGlobal Challenges2056-66462024-01-0181n/an/a10.1002/gch2.202300166Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen BatteryNilay Kaçar0Ersu Lökçü1Meltem Çayirli2Reşat Can Özden3Sahin Coskun4Cigdem Toparli5İbrahim Çelikyürek6Mustafa Anik7Department of Metallurgical and Materials Engineering Eskisehir Osmangazi University Eskisehir 26040 TurkeyDepartment of Metallurgical and Materials Engineering Eskisehir Osmangazi University Eskisehir 26040 TurkeyDepartment of Metallurgical and Materials Engineering Eskisehir Osmangazi University Eskisehir 26040 TurkeyDepartment of Metallurgical and Materials Engineering Eskisehir Osmangazi University Eskisehir 26040 TurkeyDepartment of Metallurgical and Materials Engineering Eskisehir Osmangazi University Eskisehir 26040 TurkeyDepartment of Metallurgical and Materials Engineering Middle East Technical University Ankara 06800 TurkeyDepartment of Metallurgical and Materials Engineering Eskisehir Osmangazi University Eskisehir 26040 TurkeyDepartment of Metallurgical and Materials Engineering Eskisehir Osmangazi University Eskisehir 26040 TurkeyAbstract In this work, nitrogen (N)‐doped graphene film is synthesized, as a photo‐catalyst, on one side of the copper foam by chemical vapor deposition and the copper foam is directly used as an electrode after porous Pd@rGO cathode loading to the other side of the foam for the photo‐assisted charging of the Li‐ion oxygen battery. The amount of urea (CO(NH2)2), which is used as N atom source, is optimized to get maximum photo‐anodic currents from the n‐type graphene films. The optical band gap and the valance band edge potential of the optimized N‐doped graphene film are determined as 2.00 eV and 3.71 VLi+/Li, respectively. X‐ray photoelectron spectra provided that the atomic percent of N atoms in the graphene film is 1.34% and the graphitic, pyrrolic and pyridinic N atom percentages are 54.01%, 42.20% and 3.79%, respectively. The photo‐assisted charging tests indicated that the N‐doped graphene film photo‐catalyst reduced the charging potential significantly even at 1000 mA g−1 (0.1 mA cm−2) current density and improved the cyclic discharge‐charge performance of the Li‐ion oxygen battery considerably.https://doi.org/10.1002/gch2.202300166chemical vapor depositionLi‐Ion oxygen batteriesN‐doped graphenephoto‐catalystphoto‐charging |
| spellingShingle | Nilay Kaçar Ersu Lökçü Meltem Çayirli Reşat Can Özden Sahin Coskun Cigdem Toparli İbrahim Çelikyürek Mustafa Anik Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen Battery Global Challenges chemical vapor deposition Li‐Ion oxygen batteries N‐doped graphene photo‐catalyst photo‐charging |
| title | Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen Battery |
| title_full | Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen Battery |
| title_fullStr | Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen Battery |
| title_full_unstemmed | Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen Battery |
| title_short | Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen Battery |
| title_sort | synthesis of n doped graphene photo catalyst for photo assisted charging of li ion oxygen battery |
| topic | chemical vapor deposition Li‐Ion oxygen batteries N‐doped graphene photo‐catalyst photo‐charging |
| url | https://doi.org/10.1002/gch2.202300166 |
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