中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
DOI10.1016/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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