Separator grafted with siloxane by electron beam irradiation for lithium secondary batteries

Jun Young Lee; Yong Min Lee; Bhaskar Bhattacharya; Young Chang Nho; Jung Ki Park

doi:10.1016/j.electacta.2009.02.088

Separator grafted with siloxane by electron beam irradiation for lithium secondary batteries

Jun Young Lee
, Yong Min Lee
, Bhaskar Bhattacharya
, Young Chang Nho
, Jung Ki Park

Department of Energy and Science and Engineering

Research output: Contribution to journal › Article › peer-review

91 Scopus citations

Abstract

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 × 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

Original language	English
Pages (from-to)	4312-4315
Number of pages	4
Journal	Electrochimica Acta
Volume	54
Issue number	18
DOIs	https://doi.org/10.1016/j.electacta.2009.02.088
State	Published - 15 Jul 2009

Bibliographical note

Funding Information:
This work was performed with the financial support of the Nuclear R&D Program and the Brain Korea project under the Ministry of Education, Science and Technology, Republic of Korea. And it was supported by a grant from by the Korea Science and Engineering Foundation (KOSEF) grant (WCU program, 31-2008-000-10055-0) funded by the Ministry of Education, Science and Technology (MEST), Republic of Korea.

Keywords

Electron beam irradiation
Grafted separator
High voltage
Lithium secondary battery
Siloxane

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10.1016/j.electacta.2009.02.088

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title = "Separator grafted with siloxane by electron beam irradiation for lithium secondary batteries",

abstract = "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 × 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",

keywords = "Electron beam irradiation, Grafted separator, High voltage, Lithium secondary battery, Siloxane",

author = "Lee, \{Jun Young\} and Lee, \{Yong Min\} and Bhaskar Bhattacharya and Nho, \{Young Chang\} and Park, \{Jung Ki\}",

note = "Funding Information: This work was performed with the financial support of the Nuclear R\&D Program and the Brain Korea project under the Ministry of Education, Science and Technology, Republic of Korea. And it was supported by a grant from by the Korea Science and Engineering Foundation (KOSEF) grant (WCU program, 31-2008-000-10055-0) funded by the Ministry of Education, Science and Technology (MEST), Republic of Korea.",

year = "2009",

month = jul,

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doi = "10.1016/j.electacta.2009.02.088",

language = "English",

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journal = "Electrochimica Acta",

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TY - JOUR

T1 - Separator grafted with siloxane by electron beam irradiation for lithium secondary batteries

AU - Lee, Jun Young

AU - Lee, Yong Min

AU - Bhattacharya, Bhaskar

AU - Nho, Young Chang

AU - Park, Jung Ki

N1 - Funding Information: This work was performed with the financial support of the Nuclear R&D Program and the Brain Korea project under the Ministry of Education, Science and Technology, Republic of Korea. And it was supported by a grant from by the Korea Science and Engineering Foundation (KOSEF) grant (WCU program, 31-2008-000-10055-0) funded by the Ministry of Education, Science and Technology (MEST), Republic of Korea.

PY - 2009/7/15

Y1 - 2009/7/15

N2 - 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 × 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

AB - 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 × 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

KW - Electron beam irradiation

KW - Grafted separator

KW - High voltage

KW - Lithium secondary battery

KW - Siloxane

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U2 - 10.1016/j.electacta.2009.02.088

DO - 10.1016/j.electacta.2009.02.088

M3 - Article

AN - SCOPUS:65549090124

SN - 0013-4686

VL - 54

SP - 4312

EP - 4315

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 18

ER -

Separator grafted with siloxane by electron beam irradiation for lithium secondary batteries

Abstract

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Keywords

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