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Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures for Advanced Supercapacitor Energy Storage: Design, Synthesis, and Electrochemical Performance Optimization
Abstract This thesis addresses the urgent global requirement for efficient energy storage materials by developing and characterizing advanced graphitic carbon nitride (g-C3N4)-based electrode materials for supercapacitors. A facile, low-cost thermal polymerization method produces 2D nitrogen-rich GC...
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2026
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| _version_ | 1867613432291786752 |
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| access_status_str | Open Access |
| author | Mohamed, Loujain Gamal |
| author_browse | Mohamed, Loujain Gamal |
| author_facet | Mohamed, Loujain Gamal |
| author_sort | Mohamed, Loujain Gamal |
| collection | Thesis |
| description | Abstract
This thesis addresses the urgent global requirement for efficient energy storage materials by developing and characterizing advanced graphitic carbon nitride (g-C3N4)-based electrode materials for supercapacitors. A facile, low-cost thermal polymerization method produces 2D nitrogen-rich GCN nanosheets exhibiting excellent electrochemical stability and wide voltage windows, enabling symmetric devices with 19.33 Wh/kg energy density and remarkable cycling stability over 21,000 cycles. To overcome intrinsic limitations of pristine GCN, a 3D/2D metal free composite with bio-derived carbon (Bio-Cx) is synthesized, delivering high capacitance, wide potential windows, and ultrahigh energy density of 53.72 Wh/kg in asymmetric configurations paired with mesoporous nitrogen-doped carbon (MPNDC). Extensive physicochemical and electrochemical analysis elucidates charge storage mechanisms, stability, and synergistic effects of composite architectures, confirming their dual functionality as positive and negative electrodes. This work advances the fundamental understanding and practical deployment of metal-free, sustainable, high-performance supercapacitor electrodes targeting scalable renewable energy storage technologies. |
| format | Thesis |
| id | oai:fount.aucegypt.edu:etds-3726 |
| institution | American University in Cairo (Egypt) |
| last_indexed | 2026-06-10T12:35:59.828Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from AUC Knowledge Fountain — bepress |
| publishDate | 2026 |
| publishDateRange | 2026 |
| publishDateSort | 2026 |
| publisher | AUC Knowledge Fountain |
| publisherStr | AUC Knowledge Fountain |
| record_format | dspace |
| source_str | AUC Knowledge Fountain — bepress |
| spelling | oai:fount.aucegypt.edu:etds-3726 Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures for Advanced Supercapacitor Energy Storage: Design, Synthesis, and Electrochemical Performance Optimization Mohamed, Loujain Gamal Abstract This thesis addresses the urgent global requirement for efficient energy storage materials by developing and characterizing advanced graphitic carbon nitride (g-C3N4)-based electrode materials for supercapacitors. A facile, low-cost thermal polymerization method produces 2D nitrogen-rich GCN nanosheets exhibiting excellent electrochemical stability and wide voltage windows, enabling symmetric devices with 19.33 Wh/kg energy density and remarkable cycling stability over 21,000 cycles. To overcome intrinsic limitations of pristine GCN, a 3D/2D metal free composite with bio-derived carbon (Bio-Cx) is synthesized, delivering high capacitance, wide potential windows, and ultrahigh energy density of 53.72 Wh/kg in asymmetric configurations paired with mesoporous nitrogen-doped carbon (MPNDC). Extensive physicochemical and electrochemical analysis elucidates charge storage mechanisms, stability, and synergistic effects of composite architectures, confirming their dual functionality as positive and negative electrodes. This work advances the fundamental understanding and practical deployment of metal-free, sustainable, high-performance supercapacitor electrodes targeting scalable renewable energy storage technologies. 2026-02-15T08:00:00Z thesis application/pdf https://fount.aucegypt.edu/etds/2722 https://fount.aucegypt.edu/context/etds/article/3726/viewcontent/loujain_gamal_ahmed_thesis.pdf Theses and Dissertations AUC Knowledge Fountain carbon-based materials wide operating window supercapacitors exceptional stability Nanoscience and Nanotechnology Structural Materials Sustainability |
| spellingShingle | carbon-based materials wide operating window supercapacitors exceptional stability Nanoscience and Nanotechnology Structural Materials Sustainability Mohamed, Loujain Gamal Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures for Advanced Supercapacitor Energy Storage: Design, Synthesis, and Electrochemical Performance Optimization |
| title | Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures for Advanced Supercapacitor Energy Storage: Design, Synthesis, and Electrochemical Performance Optimization |
| title_full | Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures for Advanced Supercapacitor Energy Storage: Design, Synthesis, and Electrochemical Performance Optimization |
| title_fullStr | Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures for Advanced Supercapacitor Energy Storage: Design, Synthesis, and Electrochemical Performance Optimization |
| title_full_unstemmed | Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures for Advanced Supercapacitor Energy Storage: Design, Synthesis, and Electrochemical Performance Optimization |
| title_short | Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures for Advanced Supercapacitor Energy Storage: Design, Synthesis, and Electrochemical Performance Optimization |
| title_sort | metal free nitrogen enriched graphitic carbon nitride architectures for advanced supercapacitor energy storage design synthesis and electrochemical performance optimization |
| topic | carbon-based materials wide operating window supercapacitors exceptional stability Nanoscience and Nanotechnology Structural Materials Sustainability |
| url | https://fount.aucegypt.edu/etds/2722 https://fount.aucegypt.edu/context/etds/article/3726/viewcontent/loujain_gamal_ahmed_thesis.pdf |
| work_keys_str_mv | AT mohamedloujaingamal metalfreenitrogenenrichedgraphiticcarbonnitridearchitecturesforadvancedsupercapacitorenergystoragedesignsynthesisandelectrochemicalperformanceoptimization |