Radiation grafting of methyl methacrylate onto polyethylene separators for lithium secondary batteries

被引：36

作者：

Gwon, Sung-Jin ^{[1
,2
]}

Choi, Jae-Hak ^{[1
]}

Sohn, Joon-Yong ^{[1
]}

An, Sung-Jun ^{[1
]}

Ihm, Young-Eon ^{[2
]}

Nho, Young-Chang ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, Adv Radiat Technol Inst, Jeongeup Si 580185, Jeollabuk Do, South Korea

[2] Chungnam Natl Univ, Dept Mat Engn, Taejon 305764, South Korea

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2008年 / 266卷 / 15期

关键词：

radiation grafting; peroxide method; separator; PE-g-PMMA; lithium battery;

D O I：

10.1016/j.nimb.2008.05.017

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Micro-porous polyethylene separator was modified by radiation grafting of methyl methacrylate in order to improve its affinity with a liquid electrolyte. The degree of grafting (DOG) increased with the monomer concentration and grafting time. The morphological change of the modified separator was investigated by scanning electron microscopy. The degree of crystallinity upon grafting was reduced due to the formation of an amorphous PMMA layer. The electrolyte uptake and the ionic conductivity of the separator increased with an increase in the DOG. The ionic conductivity reached 2.0 mS/cm for the grafted polyethylene separator with 127 wt% DOG. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：3387 / 3391

页数：5

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