Effect of temperature on formation and evolution of solid electrolyte interphase on Si@Graphite@C anodes

doi:10.1016/j.jechem.2021.04.05

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Effect of temperature on formation and evolution of solid electrolyte interphase on Si@Graphite@C anodes
	Dong, Hong 1,2; Wang, Jie 1; Wang, Peng 1; Ding, Hao 1; Song, Ru 1; Zhang, Ning-Shuang 1,2; Zhao, Dong-Ni 1,2; Zhang, Li-Juan 3; Li, Shi-You 1,2
刊名	JOURNAL OF ENERGY CHEMISTRY
	2022
卷号	64 页码:190-200
关键词	In-situ EIS Solid electrolyte interphase Formation Evolution Si@Graphite@C anodes
ISSN号	2095-4956
DOI	10.1016/j.jechem.2021.04.05
英文摘要	Studies on the formation and evolution of the solid electrolyte interface (SEI) film under different ambient temperatures are important to understand the failure behavior of lithium-ion batteries (LIBs). Herein, in-situ electrochemical impedance spectroscopy (EIS) test is performed on the whole discharge process of Si@Graphite@C/Li cell at 0, 25 and 55 degrees C, respectively. Combining with scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy characterizations, it is found that the SEI film undergoes a complicated evolution process of pre-formation, self-improvement and gradual decay in succession at 25 degrees C. Besides, due to the dissolution of organo-alkyl lithium at high temperature, the formed film is mainly composed of LiF, Li2CO3 and other inorganic salts, which helps to decrease the impedance. However, the electrolyte is consumed continuously on the new exposed interface, leading to the degraded performance of the cell. Moreover, the dynamic properties of Li* ions are poor at low temperature, though the migration ability of Li* ions in the solid phase can be improved as the cycle goes on. Therefore, the development and application of in-situ EIS technology are expected to become an important means to explain the electrochemical performance of batteries. (C) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000677657000005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154923]
专题	石油化工学院
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China; 2.Gansu Key Lab Low Carbon Energy & Chem Engn, Lanzhou 730050, Gansu, Peoples R China; 3.Qinghai Univ Nationalities, Coll Chem & Chem Engn, Xining 810007, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Dong, Hong,Wang, Jie,Wang, Peng,et al. Effect of temperature on formation and evolution of solid electrolyte interphase on Si@Graphite@C anodes[J]. JOURNAL OF ENERGY CHEMISTRY,2022,64:190-200.
APA	Dong, Hong.,Wang, Jie.,Wang, Peng.,Ding, Hao.,Song, Ru.,...&Li, Shi-You.(2022).Effect of temperature on formation and evolution of solid electrolyte interphase on Si@Graphite@C anodes.JOURNAL OF ENERGY CHEMISTRY,64,190-200.
MLA	Dong, Hong,et al."Effect of temperature on formation and evolution of solid electrolyte interphase on Si@Graphite@C anodes".JOURNAL OF ENERGY CHEMISTRY 64(2022):190-200.