Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 15, Issue 5, Pages 748-751Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2009.09.057
Keywords
Separators; Radiation-induced graft polymerization; Charge/discharge cycling test; Thermal stability; Electrochemical stability
Funding
- Ministry of Education, Science, and Technology, Korea
- National Research Foundation of Korea [2007-2000078] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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. (C) 2009 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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