Investigation of the soft carbon microstructure in silicon/carbon anodes for superior lithium storage
文献类型：期刊论文
| 作者 | Du, Juntao4; Ma, Jiangkai1,4; Liu, Zetao2,4; Wang, Wenchao2,4; Jia, Huina4; Zhang, Minxin4; Nie, Yi3,4 |
| 刊名 | RSC Advances
 |
| 出版日期 | 2022-07-19 |
| 卷号 | 12期号:32页码:20672-20678 |
| 关键词 | Anodes - Lithium - Mechanical stability - Porosity - Silicon - Silicon alloys - Textures |
| DOI | 10.1039/d2ra01997c |
| 英文摘要 | It is essential to consider the controllable microstructure of soft carbon and its enhancement effect on the electrochemical performance of silicon (Si) active materials. In this study, a series of Si@mesocarbon microbead (Si@MCMB) composites were prepared using mesophase pitch as the soft carbon source to coat nano-Si. The results showed that the ordered carbon layer stacking of soft carbon increased slightly with increasing heat treatment temperature in the range of 800-1400 掳C. The Si@MCMB composites at higher temperature had a turbostratic carbon layer texture with rich porosity and smaller specific surface area, and had good cycle stability and high rate performance. These results highlighted that the co-existing structure of turbostratic carbon arrays with abundant porosity from soft carbon, provided the electron/ion transfer channels, underwent Si alloy volume change and enhanced the mechanical stability. Importantly, the relationship between the capacity retention rate of the Si@MCMB anodes and the microstructural characteristics (carbon layer and porosity) of soft carbon was established, which provided effective guidance for the design of high-performance silicon/carbon (Si/C) anode materials. 漏 2022 The Royal Society of Chemistry. |
| 学科主题 | Carbon |
| 项目编号 | This work was financially supported by the National Natural Science Foundation of China (Youth Science Foundation Program No. 21908206), the Grant. YLU-DNL Fund of China (No. 2021015), the Key Science and Technology Project of Henan Province, China (No. 202102210213) and the Scientific and Technological Achievements Transfer and Transformation Project of Chinese Academy of Sciences in Henan Province, China (No. 2021102). |
| 出版者 | Royal Society of Chemistry |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61185]  |
| 作者单位 | 1.Zhengzhou University, Zhengzhou; 450000, China 2.Dalian University of Technology, Dalian; 116024, China 3.Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 4.Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou; 450000, China |
| 推荐引用方式 GB/T 7714 | Du, Juntao,Ma, Jiangkai,Liu, Zetao,et al. Investigation of the soft carbon microstructure in silicon/carbon anodes for superior lithium storage[J]. RSC Advances,2022,12(32):20672-20678. |
| APA | Du, Juntao.,Ma, Jiangkai.,Liu, Zetao.,Wang, Wenchao.,Jia, Huina.,...&Nie, Yi.(2022).Investigation of the soft carbon microstructure in silicon/carbon anodes for superior lithium storage.RSC Advances,12(32),20672-20678. |
| MLA | Du, Juntao,et al."Investigation of the soft carbon microstructure in silicon/carbon anodes for superior lithium storage".RSC Advances 12.32(2022):20672-20678. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。