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Modulating the Graphitic Domains and Pore Structure of Corncob-Derived Hard Carbons by Pyrolysis to Improve Sodium Storage.
| Content Provider | Europe PMC |
|---|---|
| Author | Song, Ning-Jing Guo, Nannan Ma, Canliang Zhao, Yun Li, Wanxi Li, Boqiong |
| Editor | Gan, Lihua |
| Copyright Year | 2023 |
| Abstract | Biomass-derived hard carbon materials are considered as the most promising anode materials for sodium-ion batteries (SIBs) due to their abundant sources, environmental friendliness, and excellent electrochemical performance. Although much research exists on the effect of pyrolysis temperature on the microstructure of hard carbon materials, there are few reports that focus on the development of pore structure during the pyrolysis process. In this study, corncob is used as the raw material to synthesize hard carbon at a pyrolysis temperature of 1000~1600 °C, and their interrelationationship between pyrolysis temperature, microstructure and sodium storage properties are systematically studied. With the pyrolysis temperature increasing from 1000 °C to 1400 °C, the number of graphite microcrystal layers increases, the long-range order degree rises, and the pore structure shows a larger size and wide distribution. The specific capacity, the initial coulomb efficiency, and the rate performance of hard carbon materials improve simultaneously. However, as the pyrolysis temperature rises further to 1600 °C, the graphite-like layer begins to curl, and the number of graphite microcrystal layers reduces. In return, the electrochemical performance of the hard carbon material decreases. This model of pyrolysis temperatures-microstructure-sodium storage properties will provide a theoretical basis for the research and application of biomass hard carbon materials in SIBs. |
| Journal | Molecules |
| Volume Number | 28 |
| DOI | 10.3390/molecules28083595 |
| PubMed Central reference number | PMC10143560 |
| Issue Number | 8 |
| PubMed reference number | 37110829 |
| e-ISSN | 14203049 |
| Language | English |
| Publisher | Molecular Diversity Preservation International (MDPI) |
| Publisher Date | 2023-04-20 |
| Access Restriction | Open |
| Subject Keyword | hard carbon corncob core pyrolysis temperature microstructure sodium-ion battery |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Medicine Chemistry Drug Discovery Pharmaceutical Science Analytical Chemistry Molecular Medicine Organic Chemistry |
