Supercritical fluid-assisted preparation of Si/CNTs@FG composites with hierarchical conductive networks as a high-performance anode material
文献类型:期刊论文
作者 | Wang, Xiaoyang3,4; Wen, Kaihua4; Chen, Tianhua2; Chen, Shimou1,4; Zhang, Suojiang4 |
刊名 | APPLIED SURFACE SCIENCE |
出版日期 | 2020-08-30 |
卷号 | 522页码:8 |
ISSN号 | 0169-4332 |
关键词 | Silicon anode Supercritical CO2 fluid Lithium-ion battery Anode |
DOI | 10.1016/j.apsusc.2020.146507 |
英文摘要 | Considering the high theoretical specific capacity (4200 mAh/g), silicon is perceived as one of the most promising anode materials for lithium-ion battery, but the large volume change during the process of de/lithiation affects its cycle performance and practical application. With the assist of supercritical CO2 fluid (scCO(2)), graphite is exfoliated to folded graphite (FG) flakes. Meanwhile, the composite of Si/CNTs@FG with a hierarchical conductive network structure was constructed, where the silicon nanoparticles and carbon nanotubes (CNTs) were homogenously attached to the interlayer of FG. The hierarchical conductive network composed of FG and CNTs not only promotes the electrons transfer process but also relieves volume expansion stress of silicon. The Si/CNTs@FG exhibits remarkable Li storage performance, delivering high specific reversible capacity (1204 mAh/g at the current density of 0.2A/g), high capacity retention (970 mAh/g after 100 cycles) and excellent rate performance (635.2 mAh/g at 2 A/g). This study provides a facile and scalable approach to prepare a silicon-based anode material with excellent electrochemical performance. |
WOS关键词 | LITHIUM-ION BATTERY ; POROUS SILICON ; ELECTROCHEMICAL PERFORMANCE ; GRAPHITE-ELECTRODES ; SI NANOPARTICLES ; LAYER GRAPHENE ; FEW-LAYER ; SURFACE ; CO2 ; NANOCOMPOSITES |
资助项目 | National Key Projects for Fundamental Research and Development of China[2017YFB0102200] ; National Natural Science Foundation of China[51922099] ; National Natural Science Foundation of China[91534109] ; National Natural Science Foundation of China[21503006] |
WOS研究方向 | Chemistry ; Materials Science ; Physics |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000535690900002 |
资助机构 | National Key Projects for Fundamental Research and Development of China ; National Natural Science Foundation of China |
源URL | [http://ir.ipe.ac.cn/handle/122111/40803] |
专题 | 中国科学院过程工程研究所 |
通讯作者 | Chen, Shimou; Zhang, Suojiang |
作者单位 | 1.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China 2.Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Xiaoyang,Wen, Kaihua,Chen, Tianhua,et al. Supercritical fluid-assisted preparation of Si/CNTs@FG composites with hierarchical conductive networks as a high-performance anode material[J]. APPLIED SURFACE SCIENCE,2020,522:8. |
APA | Wang, Xiaoyang,Wen, Kaihua,Chen, Tianhua,Chen, Shimou,&Zhang, Suojiang.(2020).Supercritical fluid-assisted preparation of Si/CNTs@FG composites with hierarchical conductive networks as a high-performance anode material.APPLIED SURFACE SCIENCE,522,8. |
MLA | Wang, Xiaoyang,et al."Supercritical fluid-assisted preparation of Si/CNTs@FG composites with hierarchical conductive networks as a high-performance anode material".APPLIED SURFACE SCIENCE 522(2020):8. |
入库方式: OAI收割
来源:过程工程研究所
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