A gel polymer electrolyte based on initiator-free photopolymerization for lithium secondary batteries

Myung Hyun Ryou; Yong Min Lee; Kuk Young Cho; Gi Beom Han; Je Nam Lee; Dong Jin Lee; Jang Wook Choi; Jung Ki Park

doi:10.1016/j.electacta.2011.10.072

A gel polymer electrolyte based on initiator-free photopolymerization for lithium secondary batteries

Myung Hyun Ryou
, Yong Min Lee
, Kuk Young Cho
, Gi Beom Han
, Je Nam Lee
, Dong Jin Lee
, Jang Wook Choi
, Jung Ki Park

Department of Energy and Science and Engineering

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

71 Scopus citations

Abstract

Highly ion-conductive gel polymer electrolyte (GPE) with mechanical flexibility is developed by incorporating liquid electrolyte into polymer films that are fabricated by initiator-free photopolymerization of poly(ethylene glycol) dimethacrylate (acrylate monomer) and pentaerythritol tetrakis (3-mercaptopropionate) (thiol monomer) blend. When UV is irradiated on the blend, the thiol monomers themselves produce radicals to initiate the polymerization. GPEs with 40-50 wt.% of thiol monomer content show mechanically free standing characteristics with sufficient flexibility. The ionic conductivity of the GPE reaches1.1 × 10 ^-3 S cm ^-1 at 25 °C and is thus high enough to be applied for lithium secondary batteries. The GPE is electrochemically stable up to 4.4 V versus Li/Li ⁺ and the unit cells consisting of LiCoO ₂/GPE/lithium metal show good cycling performance. This GPE is thus considered a good electrolyte candidate for future flexible and wearable lithium secondary batteries.

Original language	English
Pages (from-to)	23-30
Number of pages	8
Journal	Electrochimica Acta
Volume	60
DOIs	https://doi.org/10.1016/j.electacta.2011.10.072
State	Published - 15 Jan 2012

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) ( NRF-2009-0094219 and NRF-2010-0029031 ), and WCU program ( R-31-10055-0 ). This research was also supported by the Ministry of Education, Science Technology (MEST) and National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation (Hanbat National Univ.).

Keywords

Acrylate
Gel polymer electrolyte (GPE)
Lithium secondary batteries
Photopolymerization
Thiol

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10.1016/j.electacta.2011.10.072

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title = "A gel polymer electrolyte based on initiator-free photopolymerization for lithium secondary batteries",

abstract = "Highly ion-conductive gel polymer electrolyte (GPE) with mechanical flexibility is developed by incorporating liquid electrolyte into polymer films that are fabricated by initiator-free photopolymerization of poly(ethylene glycol) dimethacrylate (acrylate monomer) and pentaerythritol tetrakis (3-mercaptopropionate) (thiol monomer) blend. When UV is irradiated on the blend, the thiol monomers themselves produce radicals to initiate the polymerization. GPEs with 40-50 wt.\% of thiol monomer content show mechanically free standing characteristics with sufficient flexibility. The ionic conductivity of the GPE reaches1.1 × 10 -3 S cm -1 at 25 °C and is thus high enough to be applied for lithium secondary batteries. The GPE is electrochemically stable up to 4.4 V versus Li/Li + and the unit cells consisting of LiCoO 2/GPE/lithium metal show good cycling performance. This GPE is thus considered a good electrolyte candidate for future flexible and wearable lithium secondary batteries.",

keywords = "Acrylate, Gel polymer electrolyte (GPE), Lithium secondary batteries, Photopolymerization, Thiol",

author = "Ryou, \{Myung Hyun\} and Lee, \{Yong Min\} and Cho, \{Kuk Young\} and Han, \{Gi Beom\} and Lee, \{Je Nam\} and Lee, \{Dong Jin\} and Choi, \{Jang Wook\} and Park, \{Jung Ki\}",

note = "Funding Information: This research was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) ( NRF-2009-0094219 and NRF-2010-0029031 ), and WCU program ( R-31-10055-0 ). This research was also supported by the Ministry of Education, Science Technology (MEST) and National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation (Hanbat National Univ.).",

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doi = "10.1016/j.electacta.2011.10.072",

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AU - Ryou, Myung Hyun

AU - Lee, Yong Min

AU - Cho, Kuk Young

AU - Han, Gi Beom

AU - Lee, Je Nam

AU - Lee, Dong Jin

AU - Choi, Jang Wook

AU - Park, Jung Ki

N1 - Funding Information: This research was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) ( NRF-2009-0094219 and NRF-2010-0029031 ), and WCU program ( R-31-10055-0 ). This research was also supported by the Ministry of Education, Science Technology (MEST) and National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation (Hanbat National Univ.).

PY - 2012/1/15

Y1 - 2012/1/15

N2 - Highly ion-conductive gel polymer electrolyte (GPE) with mechanical flexibility is developed by incorporating liquid electrolyte into polymer films that are fabricated by initiator-free photopolymerization of poly(ethylene glycol) dimethacrylate (acrylate monomer) and pentaerythritol tetrakis (3-mercaptopropionate) (thiol monomer) blend. When UV is irradiated on the blend, the thiol monomers themselves produce radicals to initiate the polymerization. GPEs with 40-50 wt.% of thiol monomer content show mechanically free standing characteristics with sufficient flexibility. The ionic conductivity of the GPE reaches1.1 × 10 -3 S cm -1 at 25 °C and is thus high enough to be applied for lithium secondary batteries. The GPE is electrochemically stable up to 4.4 V versus Li/Li + and the unit cells consisting of LiCoO 2/GPE/lithium metal show good cycling performance. This GPE is thus considered a good electrolyte candidate for future flexible and wearable lithium secondary batteries.

AB - Highly ion-conductive gel polymer electrolyte (GPE) with mechanical flexibility is developed by incorporating liquid electrolyte into polymer films that are fabricated by initiator-free photopolymerization of poly(ethylene glycol) dimethacrylate (acrylate monomer) and pentaerythritol tetrakis (3-mercaptopropionate) (thiol monomer) blend. When UV is irradiated on the blend, the thiol monomers themselves produce radicals to initiate the polymerization. GPEs with 40-50 wt.% of thiol monomer content show mechanically free standing characteristics with sufficient flexibility. The ionic conductivity of the GPE reaches1.1 × 10 -3 S cm -1 at 25 °C and is thus high enough to be applied for lithium secondary batteries. The GPE is electrochemically stable up to 4.4 V versus Li/Li + and the unit cells consisting of LiCoO 2/GPE/lithium metal show good cycling performance. This GPE is thus considered a good electrolyte candidate for future flexible and wearable lithium secondary batteries.

KW - Acrylate

KW - Gel polymer electrolyte (GPE)

KW - Lithium secondary batteries

KW - Photopolymerization

KW - Thiol

UR - https://www.scopus.com/pages/publications/84655167634

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DO - 10.1016/j.electacta.2011.10.072

M3 - Article

AN - SCOPUS:84655167634

SN - 0013-4686

VL - 60

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EP - 30

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

A gel polymer electrolyte based on initiator-free photopolymerization for lithium secondary batteries

Abstract

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Keywords

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