| Issue |
MATEC Web Conf.
Volume 363, 2022
5th International Conference on Advances in Materials, Machinery, Electronics (AMME 2022)
|
|
|---|---|---|
| Article Number | 01022 | |
| Number of page(s) | 4 | |
| Section | Research papers | |
| DOI | https://doi.org/10.1051/matecconf/202236301022 | |
| Published online | 29 August 2022 | |
Silicon/Needle Coke Composites as Efficient Anodes for Lithium Ion Batteries
1 Ansteel Beijing Research Institute CO., LTD., Beijing 102200, China
2 Angang Chemical Technology CO., LTD., Anshan 114000, China
3 Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
* Corresponding author: xiaj0001@126.com
In this research, a facile method was reported to prepare silicon/carbon composites by heating Si nanosheets and coal-based needle cokes in the assistance of binder glucopyranose. The microstructures and electrochemical performances of samples were analyzed. It was found that Si nanosheets adhered to needle cokes forming silicon/carbon composites. Compared with needle cokes, the composites showed higher capacity and initial coulombic efficiency. Also, they improved the cycle stability of silicon materials. The silicon/carbon anode had a reversible capacity of 381.8 mAh/g at a current density of 100 mA/g after 170 cycles. In our work, relatively inexpensive Si nanosheets and coal-based needle cokes with low price were employed as the silicon and carbon sources respectively. Therefore, this method provides a possible strategy to reduce costs of silicon/carbon anodes, accelerating their commercial applications.
© The Authors, published by EDP Sciences, 2022
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