Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances
Widely sourced precursors for hard carbon with high performances are still a major challenge for industrializing sodium-ion batteries. Herein, long-flame coal was adopted as the precursors to prepare hard carbon by carbonization at different temperatures, and the influences of carbonization temperat...
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| Format: | Article |
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Elsevier
2025-03-01
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| Series: | Fuel Processing Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0378382024001292 |
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| author | Hai-Tao Zeng Wei-Wei Kang Bao-Lin Xing Guang-Xu Huang Qiang Li Han Hu Fang-Le Su Jian-Bo Jia Chuan-Xiang Zhang |
| author_facet | Hai-Tao Zeng Wei-Wei Kang Bao-Lin Xing Guang-Xu Huang Qiang Li Han Hu Fang-Le Su Jian-Bo Jia Chuan-Xiang Zhang |
| author_sort | Hai-Tao Zeng |
| collection | DOAJ |
| description | Widely sourced precursors for hard carbon with high performances are still a major challenge for industrializing sodium-ion batteries. Herein, long-flame coal was adopted as the precursors to prepare hard carbon by carbonization at different temperatures, and the influences of carbonization temperatures on the microstructure together with electrochemical properties of hard carbon were systematically investigated. With elevating carbonization temperature, carbon layer spacing, defect concentration and C − O, CO functional groups of hard carbon all gradually decrease. The hard carbon prepared at 1500 °C (BHC-1500) demonstrates 38 % of the pseudo-graphite carbon with an average carbon layer spacing of 0.360 nm, a specific surface area of 31.2 m2/g and appropriate defect concentration (ID1/IG of 1.50). As anode active materials, BHC-1500 possesses a specific capacity of 254 mAh/g at 20 mA/g with initial coulombic efficiency of 79 %, a rate performance of 24.8% in 20-1000 mA/g, a capacity retention of 72 % after 1000 cycles at 500 mA/g, suggesting the excellent electrochemical sodium storage performances, which may be concerned with the highest proportion of pseudo-graphite carbon, appropriate carbon layer spacing, functional groups and defect concentration. The ex-situ XRD test confirms sodium storage mechanism of “adsorption-intercalation/filling” in hard carbon. This work can provide new ideas for clean utilization of long-flame coal and developing high performances anode active materials for SIBs. |
| format | Article |
| id | doaj-art-315ecab5991645b1a9dea98af116d77b |
| institution | Kabale University |
| issn | 0378-3820 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Fuel Processing Technology |
| spelling | doaj-art-315ecab5991645b1a9dea98af116d77b2025-01-15T04:11:31ZengElsevierFuel Processing Technology0378-38202025-03-01267108159Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performancesHai-Tao Zeng0Wei-Wei Kang1Bao-Lin Xing2Guang-Xu Huang3Qiang Li4Han Hu5Fang-Le Su6Jian-Bo Jia7Chuan-Xiang Zhang8Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaHenan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China; College of Physics, Qingdao University, Qingdao 266071, China; Corresponding authors.Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China; Corresponding authors.Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaCollege of Physics, Qingdao University, Qingdao 266071, ChinaCollege of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaHenan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaHenan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaHenan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China; State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Jiaozuo 454003, China; Henan Polytechnic University Ordos Research Institute of Clean Coal Development and Utilization, Ordos 017010, China; Corresponding authors.Widely sourced precursors for hard carbon with high performances are still a major challenge for industrializing sodium-ion batteries. Herein, long-flame coal was adopted as the precursors to prepare hard carbon by carbonization at different temperatures, and the influences of carbonization temperatures on the microstructure together with electrochemical properties of hard carbon were systematically investigated. With elevating carbonization temperature, carbon layer spacing, defect concentration and C − O, CO functional groups of hard carbon all gradually decrease. The hard carbon prepared at 1500 °C (BHC-1500) demonstrates 38 % of the pseudo-graphite carbon with an average carbon layer spacing of 0.360 nm, a specific surface area of 31.2 m2/g and appropriate defect concentration (ID1/IG of 1.50). As anode active materials, BHC-1500 possesses a specific capacity of 254 mAh/g at 20 mA/g with initial coulombic efficiency of 79 %, a rate performance of 24.8% in 20-1000 mA/g, a capacity retention of 72 % after 1000 cycles at 500 mA/g, suggesting the excellent electrochemical sodium storage performances, which may be concerned with the highest proportion of pseudo-graphite carbon, appropriate carbon layer spacing, functional groups and defect concentration. The ex-situ XRD test confirms sodium storage mechanism of “adsorption-intercalation/filling” in hard carbon. This work can provide new ideas for clean utilization of long-flame coal and developing high performances anode active materials for SIBs.http://www.sciencedirect.com/science/article/pii/S0378382024001292Hard carbonLong-flame coalMicrostructure modulationSodium-ion batteriesElectrochemical performances |
| spellingShingle | Hai-Tao Zeng Wei-Wei Kang Bao-Lin Xing Guang-Xu Huang Qiang Li Han Hu Fang-Le Su Jian-Bo Jia Chuan-Xiang Zhang Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances Fuel Processing Technology Hard carbon Long-flame coal Microstructure modulation Sodium-ion batteries Electrochemical performances |
| title | Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances |
| title_full | Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances |
| title_fullStr | Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances |
| title_full_unstemmed | Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances |
| title_short | Microstructure modulation of hard carbon derived from long-flame coal to improve electrochemical sodium storage performances |
| title_sort | microstructure modulation of hard carbon derived from long flame coal to improve electrochemical sodium storage performances |
| topic | Hard carbon Long-flame coal Microstructure modulation Sodium-ion batteries Electrochemical performances |
| url | http://www.sciencedirect.com/science/article/pii/S0378382024001292 |
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