Structural evolution and sodium storage properties of γ-ray irradiated hard carbon
In this study, self-doping defects were introduced to optimize the interlayer spacing and pore structure of hard carbon by γ-ray irradiation. The effects of the absorbed dose on the interlayer spacing, internal defects, and disordered structure of hard carbon were investigated through scanning elect...
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| Format: | Article |
| Language: | zho |
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Science Press
2024-02-01
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| Series: | Fushe yanjiu yu fushe gongyi xuebao |
| Subjects: | |
| Online Access: | http://www.fs.sinap.ac.cn/thesisDetails#10.11889/j.1000-3436.2023-0057&lang=zh |
| _version_ | 1797292845670858752 |
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| author | SONG Xiaohui SHI Haiting WANG Shuo GAO Pan XU Zhiwei |
| author_facet | SONG Xiaohui SHI Haiting WANG Shuo GAO Pan XU Zhiwei |
| author_sort | SONG Xiaohui |
| collection | DOAJ |
| description | In this study, self-doping defects were introduced to optimize the interlayer spacing and pore structure of hard carbon by γ-ray irradiation. The effects of the absorbed dose on the interlayer spacing, internal defects, and disordered structure of hard carbon were investigated through scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, and isothermal nitrogen adsorption/desorption. The electrochemical properties were investigated using the constant current charge-discharge. The results showed that the surface crystallinity and disordered structure of hard carbon increased with the absorbed dose. Moreover, the electrochemical properties of hard carbon were clearly improved. At a dose of 140 kGy, hard carbon presented a high specific surface area of 425.343 m2/g and provided a sodium storage capacity of 300 mAh/g at 30 mA/g; the high current density capacity remained at 195 mAh/g at 1 A/g, suggesting that the electrode capacity increased three-fold. Excellent stability was also maintained during high-rate charge-discharge. This work provides new approaches and ideas for the design of advanced nanomaterials and defect engineering applications in the field of energy storage. |
| first_indexed | 2024-03-07T20:03:25Z |
| format | Article |
| id | doaj.art-befefd0ac43c47d196ae36721d177a8d |
| institution | Directory Open Access Journal |
| issn | 1000-3436 |
| language | zho |
| last_indexed | 2024-03-07T20:03:25Z |
| publishDate | 2024-02-01 |
| publisher | Science Press |
| record_format | Article |
| series | Fushe yanjiu yu fushe gongyi xuebao |
| spelling | doaj.art-befefd0ac43c47d196ae36721d177a8d2024-02-28T05:31:41ZzhoScience PressFushe yanjiu yu fushe gongyi xuebao1000-34362024-02-0142101020201020210.11889/j.1000-3436.2023-00571000-3436（2024）01-0010-08Structural evolution and sodium storage properties of γ-ray irradiated hard carbonSONG Xiaohui0SHI Haiting1WANG Shuo2GAO Pan3XU Zhiwei4Tianjin Kinfa Advanced Materials Co., Ltd., Tianjin 300000, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Textile Science and Engineering, Tiangong University, Tianjin 300387, ChinaIn this study, self-doping defects were introduced to optimize the interlayer spacing and pore structure of hard carbon by γ-ray irradiation. The effects of the absorbed dose on the interlayer spacing, internal defects, and disordered structure of hard carbon were investigated through scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, and isothermal nitrogen adsorption/desorption. The electrochemical properties were investigated using the constant current charge-discharge. The results showed that the surface crystallinity and disordered structure of hard carbon increased with the absorbed dose. Moreover, the electrochemical properties of hard carbon were clearly improved. At a dose of 140 kGy, hard carbon presented a high specific surface area of 425.343 m2/g and provided a sodium storage capacity of 300 mAh/g at 30 mA/g; the high current density capacity remained at 195 mAh/g at 1 A/g, suggesting that the electrode capacity increased three-fold. Excellent stability was also maintained during high-rate charge-discharge. This work provides new approaches and ideas for the design of advanced nanomaterials and defect engineering applications in the field of energy storage.http://www.fs.sinap.ac.cn/thesisDetails#10.11889/j.1000-3436.2023-0057&lang=zhγ-rayirradiationhard carbondefectsinterlayer spacingsodium storage properties |
| spellingShingle | SONG Xiaohui SHI Haiting WANG Shuo GAO Pan XU Zhiwei Structural evolution and sodium storage properties of γ-ray irradiated hard carbon Fushe yanjiu yu fushe gongyi xuebao γ-ray irradiation hard carbon defects interlayer spacing sodium storage properties |
| title | Structural evolution and sodium storage properties of γ-ray irradiated hard carbon |
| title_full | Structural evolution and sodium storage properties of γ-ray irradiated hard carbon |
| title_fullStr | Structural evolution and sodium storage properties of γ-ray irradiated hard carbon |
| title_full_unstemmed | Structural evolution and sodium storage properties of γ-ray irradiated hard carbon |
| title_short | Structural evolution and sodium storage properties of γ-ray irradiated hard carbon |
| title_sort | structural evolution and sodium storage properties of γ ray irradiated hard carbon |
| topic | γ-ray irradiation hard carbon defects interlayer spacing sodium storage properties |
| url | http://www.fs.sinap.ac.cn/thesisDetails#10.11889/j.1000-3436.2023-0057&lang=zh |
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