Journal
ELECTROCHIMICA ACTA
Volume 54, Issue 18, Pages 4312-4315Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.02.088
Keywords
Siloxane; Electron beam irradiation; Grafted separator; High voltage; Lithium secondary battery
Categories
Funding
- Nuclear RD Program
- Ministry of Education, Science and Technology, Republic of Korea
- Korea Science and Engineering Foundation (KOSEF), Ministry of Education, Science and Technology (MEST), Republic of Korea [31-2008-000-10055-0]
Ask authors/readers for more resources
Polyethylene (PE) separator grafted with 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane (siloxane) was newly prepared by electron beam irradiation. The degree of grafting and morphology of the grafted separators were characterized by FT-IR and scanning electron microscopy (SEM). The polymer electrolytes based on the grafted separators were prepared by immersing the separators in the electrolyte containing 1 M LiPF6 in EC/DMC (1:1 by volume). The ionic conductivity of the grafted separators was changed with the degree of grafting and showed the highest value of 7 x 10(-4) S cm(-1) at the degree of grafting of 6%. The electrochemical stability limit of the grafted separator with the degree of grafting of 6% was increased to 5.2 V. The Li ion cell using the grafted separator also showed an improved performance. suggesting that the grafted separator is a good candidate for the separator of lithium batteries at high voltage operation. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available