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Received February 12, 2014
Accepted September 11, 2014
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Enhanced separator properties by coating alumina nanoparticles with poly(2-acrylamido-2-methyl-1-propanesulfonic acid) binder for lithium-ion batteries
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
kwang@etri.re.kr
Korean Journal of Chemical Engineering, April 2015, 32(4), 717-722(6), 10.1007/s11814-014-0268-z
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Abstract
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_x000D_
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.
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Kim KM, Ko JM, Park NG, Ryu KS, Chang SH, Solid State Ion., 161(1-2), 121 (2003)
Kim KM, Latifatu M, Lee YG, Ko JM, Kim JH, Cho WI, J. Electroanal. Chem., 32, 146 (2014)
Bernard MC, Hugot-Le Goff A, Zeng W, Electrochim. Acta, 44(5), 781 (1998)
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Hilal N, Al-Khatib L, Atkin BP, Kochkodan V, Potapchenko N, Desalination, 158(1-3), 65 (2003)
Hilal N, Kochkodan V, Al-Khatib L, Levadna T, Desalination, 167(1-3), 293 (2004)
Qiao JL, Okada T, Ono H, Solid State Ion., 180(23-25), 1318 (2009)
Qiao J, Hamaya T, Okada T, Chem. Mater., 17, 2413 (2005)
Qiao J, Hamaya T, Okada T, J. Mater. Chem., 15, 4414 (2005)
Qiao JL, Hamaya T, Okada T, Polymer, 46(24), 10809 (2005)
Qiao JL, Okada T, Electrochem. Solid State Lett., 9(8), A379 (2006)
Kim KM, Park NG, Ryu KS, Chang SH, Electrochim. Acta, 51(26), 5636 (2006)
Kim KM, Park NG, Ryu KS, Chang SH, J. Appl. Polym. Sci., 102(1), 140 (2006)
Kim KM, Kim JC, Ryu KS, Macromol. Mater. Eng., 291, 1495 (2006)
Kim KM, Kim JC, Ryu KS, Macromol. Chem. Phys., 208, 887 (2007)
Parker WO, Lezzi A, Polymer, 34, 4913 (1993)
Aggour YA, Polym. Degrad. Stabil., 44, 71 (1994)
Aggour YA, Polym. Degrad. Stabil., 60, 317 (1998)
Aggour YA, Bekhat G, Atia A, J. Polym. Mater., 17, 193 (2000)
Saunier J, Alloin F, Sanchez JY, Caillon G, J. Power Sources, 119-121, 454 (2003)
Jeong HS, Kim DW, Jeong YU, Lee SY, J. Power Sources, 195(18), 6116 (2010)
Atta AM, Polym. Adv. Technol., 13, 567 (2002)
