화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.15, No.5, 748-751, September, 2009
DOI10.1016/j.jiec.2009.09.057  Export Citation
Battery performance of PMMA-grafted PE separators prepared by pre-irradiation grafting technique
Sung-Jin Gwon1, 2, Jae-Hak Choi1, Joon-Yong Sohn1, Youn-Mook Lim1, Young-Chang Nho1, †, and Young-Eon Ihm2
  • 1Radiation Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do 580-185, Republic of Korea
  • 2Department of Materials Engineering, Chnugnam National University, Yuseong-gu, Daejeon 305-764, Republic of Korea
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Poly(methyl methacrylate)-grafted polyethylene (PE-g-PMMA) separators were prepared by preirradiation grafting technique of methyl methacrylate onto a commercial polyethylene separator. The prepared separatorswere characterized by using charge/discharge (C/D) cycling test, AC impedance, and thermal stability analyses. Thermal shrinkage (TS) of the PE-g-PMMA separators decreased with an increasing degree of grafting up to 70% above which it was saturated. The PE-g-PMMA separators showed a better oxidation stability on the anode up to 5 V and a better cycle life performance than the original PE separator. These characteristics make the prepared separators suitable for applications in high voltage secondary lithium batteries.
Keywords:Separators;Radiation-induced graft polymerization;Charge/discharge cycling test;Thermal stability;Electrochemical stability
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