Surface-modified separators prepared with conductive polymer and aluminum fluoride for lithium-ion batteries
- Authors
- Shin, Won-Kyung; Yoo, Ji-Hyun; Kim, Dong-Won
- Issue Date
- Apr-2015
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Surface-modified separators; Conductive polymer; Aluminum fluoride; Lithium-ion cells; Thermal stability
- Citation
- JOURNAL OF POWER SOURCES, v.279, pp.737 - 744
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 279
- Start Page
- 737
- End Page
- 744
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/157557
- DOI
- 10.1016/j.jpowsour.2015.01.047
- ISSN
- 0378-7753
- Abstract
- Conventional polyethylene (PE) separators are surface-modified by thin coating with conductive poly(3,4-ethylenedioxythiophen)-co-poly(ethylene glycol) (PEDOT-co-PEG) copolymer and aluminum fluoride particles. The surface-modified separators exhibit a significant reduction in thermal shrinkage and an improved electrolyte uptake. By using these separators, the lithium-ion cells composed of carbon negative electrodes and LiNi1/3Co1/3Mn1/3O2 positive electrodes are assembled and their cycling performances are evaluated. The cells assembled with the surface-modified separators demonstrate superior cycling performance compared to cells prepared with pristine PE separator, both at ambient temperatures and at elevated temperature.
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