分离器(采油)
材料科学
聚乙烯
热稳定性
嫁接
甲基丙烯酸甲酯
阳极
辐照
聚甲基丙烯酸甲酯
化学工程
高分子化学
复合材料
化学
电极
聚合
聚合物
物理化学
核物理学
工程类
物理
热力学
作者
Sung-Jin Gwon,Jae‐Hak Choi,Joon-Yong Sohn,Youn-Mook Lim,Young Chang Nho,Young Eon Ihm
标识
DOI:10.1016/j.jiec.2009.09.057
摘要
Poly(methyl methacrylate)-grafted polyethylene (PE-g-PMMA) separators were prepared by pre-irradiation grafting technique of methyl methacrylate onto a commercial polyethylene separator. The prepared separators were 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.
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