期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 288, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2022.126354
关键词
Lithium-ionbattery; Electrospinning; Non-wovenweb; Separator; Crate
资金
- Korea Evaluation Institute of Industrial Technology (KEIT) [20010853]
- National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2022R1C1C1009974]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20010853] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Lithium-ion batteries have gained attention as a next-generation energy solution, but current components need improvement. This paper presents a PVDF-based composite nanofiber electrospun non-woven separator, which improves lithium-ion transportation and shows enhanced electro-chemical performances.
Lithium-ion batteries (LIBs) have attained great attention nowadays as a next-generation energy solution, but all of the current components need to be improved in order to meet the requirement for LIBs with mid-/high power density and capacity. Especially, the stretched olefin membrane as a separator should be reconsidered because it contains intrinsic limitations in pore size and electrolyte wettability, which is directly related to fast charge/ discharge rate of LIBs. Electrospun non-woven nanofiber web has been considered as a promising candidate to improve Li-ion transportation. However, several features should be addressed for practical applications, such as the production rate (and cost) of the electrospun non-woven web, mechanical properties, and corresponding safety. In this paper, we present the electrospun non-woven web composed of PVDF based composite nanofiber as a separator in LIBs using syringeless electrospinning. Syringeless electrospinning can increase their production rate over at least 8 times higher than conventional electrospinning. In addition, this method is advantageous to incorporate colloidal inorganic fillers into the non-woven web, which makes it possible to increase the me-chanical strength and electrolyte wettability. The LIBs with our non-woven separator shows improved electro-chemical performances over that with the olefin separator.
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