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학술지 Enhanced Separator Properties by Coating Alumina Nanoparticles with Poly(2-Acrylamido-2-Methyl-1-Propanesulfonic Acid) Binder for Lithium-Ion batteries
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저자
김광만, Hepowit, 김진철, 이영기, 고장면
발행일
201504
출처
Korean Journal of Chemical Engineering, v.32 no.4, pp.717-722
ISSN
0256-1115
출판사
한국화학공학회
DOI
https://dx.doi.org/10.1007/s11814-014-0268-z
협약과제
14PB4300, 중대형 전고체 리튬이차전지용 유무기 하이브리드 고체전해질, 이영기
초록
To enhance thermal stability and high-rate capability of lithium-ion batteries, both sides of porous polyethylene (PE) and poly(vinylidene fluoride) (PVdF) separators are coated with nanosized Al2O3 powder and poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPS) binder dispersed in acetone-water solvent. For comparison, PVdF is also used as a polymer binder for coating. The Al2O3/PAMPS-coated separators show an improved thermal shrinkage resistance at 120 °C and enhanced electrochemical performance of LiCoO2?뻝raphite full-cell. These improvements are due to the binding ability of PAMPS, the large surface area of the Al2O3 nanoparticles, and their surface hydrophilicity maintained by the PAMPS binder to exhibit outstanding wettability towards the electrolyte, resulting in the increase in discharge capacity and high-rate capability.
키워드
Alumina Coating, Electrochemical Properties, Lithium-ion Battery, Polymer Binder, Separators
KSP 제안 키워드
2-acrylamido-2-methyl-1-propanesulfonic acid(Poly), Acetone-water, Al2O3 nanoparticles, Binding ability, Full cell, Ion batteries, Large surface area, Polyethylene (pe), Thermal shrinkage, Thermal stability(TGA), Water solvent