Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary Batteries
Si/C nanocomposite was successfully prepared by a scalable approach through high-energy mechanical milling and carbonization process. The crystalline structure of the milled powders was studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Morphology of the milled powders...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/8/11/2140 |
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| author | Reddyprakash Maddipatla Chadrasekhar Loka Woo Jeong Choi Kee-Sun Lee |
| author_facet | Reddyprakash Maddipatla Chadrasekhar Loka Woo Jeong Choi Kee-Sun Lee |
| author_sort | Reddyprakash Maddipatla |
| collection | DOAJ |
| description | Si/C nanocomposite was successfully prepared by a scalable approach through high-energy mechanical milling and carbonization process. The crystalline structure of the milled powders was studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Morphology of the milled powders was investigated by Field-emission scanning electron microscopy (FE-SEM). The effects of milling time on crystalline size, crystal structure and microstructure, and the electrochemical properties of the nanocomposite powders were studied. The nanocomposite showed high reversible capacity of ~1658 mAh/g with an initial cycle coulombic efficiency of ~77.5%. The significant improvement in cyclability and the discharge capacity was mainly ascribed to the silicon particle size reduction and carbon layer formation over silicon for good electronic conductivity. As the prepared nanocomposite Si/C electrode exhibits remarkable electrochemical performance, it is potentially applied as a high capacity anode material in the lithium-ion secondary batteries. |
| first_indexed | 2024-12-12T16:27:15Z |
| format | Article |
| id | doaj.art-ca6824cdfe9d40429626609567784c9d |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-12T16:27:15Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-ca6824cdfe9d40429626609567784c9d2022-12-22T00:18:51ZengMDPI AGApplied Sciences2076-34172018-11-01811214010.3390/app8112140app8112140Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary BatteriesReddyprakash Maddipatla0Chadrasekhar Loka1Woo Jeong Choi2Kee-Sun Lee3Department of Advanced Materials Engineering, Kongju National University, Cheonan 31080, KoreaDepartment of Advanced Materials Engineering, Kongju National University, Cheonan 31080, KoreaDepartment of Advanced Materials Engineering, Kongju National University, Cheonan 31080, KoreaDepartment of Advanced Materials Engineering, Kongju National University, Cheonan 31080, KoreaSi/C nanocomposite was successfully prepared by a scalable approach through high-energy mechanical milling and carbonization process. The crystalline structure of the milled powders was studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Morphology of the milled powders was investigated by Field-emission scanning electron microscopy (FE-SEM). The effects of milling time on crystalline size, crystal structure and microstructure, and the electrochemical properties of the nanocomposite powders were studied. The nanocomposite showed high reversible capacity of ~1658 mAh/g with an initial cycle coulombic efficiency of ~77.5%. The significant improvement in cyclability and the discharge capacity was mainly ascribed to the silicon particle size reduction and carbon layer formation over silicon for good electronic conductivity. As the prepared nanocomposite Si/C electrode exhibits remarkable electrochemical performance, it is potentially applied as a high capacity anode material in the lithium-ion secondary batteries.https://www.mdpi.com/2076-3417/8/11/2140silicon/carbon nanocompositelithium-ion batteryhigh-energy mechanical millinganode materials |
| spellingShingle | Reddyprakash Maddipatla Chadrasekhar Loka Woo Jeong Choi Kee-Sun Lee Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary Batteries Applied Sciences silicon/carbon nanocomposite lithium-ion battery high-energy mechanical milling anode materials |
| title | Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary Batteries |
| title_full | Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary Batteries |
| title_fullStr | Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary Batteries |
| title_full_unstemmed | Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary Batteries |
| title_short | Nanocomposite of Si/C Anode Material Prepared by Hybrid Process of High-Energy Mechanical Milling and Carbonization for Li-Ion Secondary Batteries |
| title_sort | nanocomposite of si c anode material prepared by hybrid process of high energy mechanical milling and carbonization for li ion secondary batteries |
| topic | silicon/carbon nanocomposite lithium-ion battery high-energy mechanical milling anode materials |
| url | https://www.mdpi.com/2076-3417/8/11/2140 |
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