화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.32, No.4, 717-722, April, 2015
DOI10.1007/s11814-014-0268-z  Export Citation
Enhanced separator properties by coating alumina nanoparticles with poly(2-acrylamido-2-methyl-1-propanesulfonic acid) binder for lithium-ion batteries
Kwang Man Kim†, Lovely Rose Hepowit1, Jin-Chul Kim2, Young-Gi Lee, and Jang Myoun Ko1
  • Research Section of Power Control Devices, Electronics and Telecommunications Research Institute (ETRI), Daejon 305-700, Korea
  • 1Department of Chemical and Biological Engineering, Hanbat National University, Daejon 305-719, Korea
  • 2Department of Medical Biomaterials Engineering, Kangwon National University, Chuncheon, Kangwon 200-701, Korea
E-mail:
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 oC and enhanced electrochemical performance of LiCoO2||graphite 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.
Keywords:Polymer Binder;Alumina Coating;Separators;Electrochemical Properties;Lithium-ion Battery
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