Oxidation Anchoring Cross-Linking Strategy Synthesis of Semicoke-Based Hard Carbon for Low-Cost and High-Performance Sodium-Ion Batteries
Semicoke is extensively utilized in the production of carbon-based materials due to its advantages of high carbon yield and low cost. However, as a thermoplastic precursor, it tends to undergo melting and reorganization during thermal decomposition, resulting in the formation of a well-structured gr...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1985. - 41(2025), 27 vom: 15. Juli, Seite 17914-17923 |
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| Weitere Verfasser: | , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article |
| Zusammenfassung: | Semicoke is extensively utilized in the production of carbon-based materials due to its advantages of high carbon yield and low cost. However, as a thermoplastic precursor, it tends to undergo melting and reorganization during thermal decomposition, resulting in the formation of a well-structured graphite lattice, which limits its application in sodium storage. Herein, we introduce an oxidation anchoring cross-linking strategy to synthesize semicoke-based hard carbon (SBHC). This approach effectively incorporates C-O-C and -C(O)-O- functional groups into the semicoke molecules. The introduced oxygen functional groups (OFGs) will enlarge the interlayer spacing and form a more nanoporous structure in the bulk of hard carbon. The optimized SBHC demonstrates a significantly enhanced reversible capacity of 280.84 mAh g-1, which significantly surpasses the capacity of the raw semicoke-derived hard carbon (134.53 mAh g-1), with the plateau capacity increase of 2.6 times. This study presents a viable strategy for producing cost-effective, high-performance hard carbon materials for sodium-ion batteries |
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| Beschreibung: | Date Revised 15.07.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/acs.langmuir.5c01677 |