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

doi:10.1016/j.jechem.2022.05.031

CORC > 兰州理工大学 > 兰州理工大学 > 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 3; Wang, Jie 3; Ding, Hao 3; Wang, Peng 3; Song, Ru 3; Zhang, Ningshuang 1,2,3; Cui, Xuchun 1,2,3; Li, Shiyou 1,2,3
刊名	Journal of Energy Chemistry
	2022-09-01
卷号	72 页码:405-415
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
ISSN号	2095-4956
DOI	10.1016/j.jechem.2022.05.031
英文摘要	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
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000831517500011
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159135]
专题	石油化工学院
作者单位	1.Gansu Engineerin Laboratory of Cathode Material for Lithium-ion Battery, Gansu, Baiyin; 730900, China 2.Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Gansu, Lanzhou; 730050, China; 3.School of Petrochemical Technology, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China;
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.