Design and performance improvement of SiNPs@graphene@C composite with a popcorn structure

doi:10.1016/j.jechem.2022.05.031

IR > 石油化工学院

	Design and performance improvement of SiNPs@graphene@C composite with a popcorn structure
	Dong, Hong 1,2,3; Zong, Feifei 1; Wang, Jie 1; Ding, Hao 1; Wang, Peng 1; Song, Ru 1; Zhang, Ningshuang1,2,3 ; Cui, Xuchun1,2,3 ; Li, Shiyou1,2,3
	2022-09
发表期刊	Journal of Energy Chemistry
ISSN	2095-4956
卷号	72 页码:405-415
摘要	Silicon anodes are considered to be the most promising alternatives owing to their theoretical specific capacity, which is almost 10 times higher than that of graphite anodes. However, huge volume changes during charging and discharging affect their interface stability, which strongly limits their application in commercial batteries. Herein, a popcorn-structured silicon-carbon composite (SiNPs@graphene@C), composed of silicon nanoparticles (SiNPs), graphene spheres and pitch-based carbon, is prepared by spray-drying followed by a wet process. The resulting SiNPs@graphene@C composite has good flexibility and elastic-strain capacity due to the graphene substrate, and it possesses macrostructural integrity and mechanical stability during cycling due to the rigid carbon–carbon chemical bonds. As a result, it shows a discharge-specific capacity of 481.3 mAh g−1 and a capacity retention of 82.9% after 500 cycles at 1 A g−1. Besides, the initial coulomb efficiency is increased from 65.7% to 86.5% by pre-lithiation, which improves the feasibility of commercialising the SiNPs@graphene@C composite. © 2022 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences
关键词	Anodes Bond strength (chemical) Carbon carbon composites Chemical stability Mechanical stability Silicon Graphite anode Interface stabilities Performance Popcorn structure Pre-lithiation Silicon anode Silicon nanoparticle@graphene@C Silicon nanoparticles Specific capacities Volume change
DOI	10.1016/j.jechem.2022.05.031
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
WOS类目	Chemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000831517500011
出版者	Elsevier B.V.
EI入藏号	20222612287552
EI主题词	Graphene
EI分类号	415.4 Structural Materials Other Than Metal, Plastics or Wood ; 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 714.1 Electron Tubes ; 761 Nanotechnology ; 801 Chemistry ; 801.4 Physical Chemistry ; 804 Chemical Products Generally
来源库	WOS
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/159135
专题	石油化工学院
通讯作者	Li, Shiyou
作者单位	1.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China; 2.Key Lab Low Carbon Energy & Chem Engn Gansu Prov, Lanzhou 730050, Gansu, Peoples R China; 3.Gansu Engineerin Lab Cathode Mat Lithium Ion Batte, Baiyin 730900, Gansu, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Dong, Hong,Zong, Feifei,Wang, Jie,et al. Design and performance improvement of SiNPs@graphene@C composite with a popcorn structure[J]. Journal of Energy Chemistry,2022,72:405-415.
APA	Dong, Hong.,Zong, Feifei.,Wang, Jie.,Ding, Hao.,Wang, Peng.,...&Li, Shiyou.(2022).Design and performance improvement of SiNPs@graphene@C composite with a popcorn structure.Journal of Energy Chemistry,72,405-415.
MLA	Dong, Hong,et al."Design and performance improvement of SiNPs@graphene@C composite with a popcorn structure".Journal of Energy Chemistry 72(2022):405-415.