Solid polymer electrolytes based on crosslinkable polyoctahedral silsesquioxanes (POSS) for room temperature lithium polymer batteries

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

doi:10.1007/s10008-009-0968-1

Solid polymer electrolytes based on crosslinkable polyoctahedral silsesquioxanes (POSS) for room temperature lithium polymer 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

30 Scopus citations

Abstract

Solid polymer electrolytes (SPE), based on polyoctahedral silsesquioxanes (POSS) as a crosslinking agent, were prepared by radical polymerization. The ionic conductivity is greatly enhanced by introduction of crosslinkable POSS with multifunctional groups. The SPE prepared with 5 wt.% crosslinking agent shows an ionic conductivity of 5.3×10 ^-4 S cm ^-1 at room temperature. The content of nonvolatile plasticizer, poly(ethylene glycol) dimethyl ether, in the SPE, could be raised to 95 wt.% without any leakage. The SPE is found to be electrochemically stable up to 5.3 V. Lithium polymer cell consisting of Li/SPE/LiCoO ₂ exhibits 80% of initial discharge capacity even at the rate of 0.1 C at room temperature after 20 cycles, which is a substantial improvement for practical consideration of lithium polymer batteries at room temperature.

Original language	English
Pages (from-to)	1445-1449
Number of pages	5
Journal	Journal of Solid State Electrochemistry
Volume	14
Issue number	8
DOIs	https://doi.org/10.1007/s10008-009-0968-1
State	Published - Aug 2010

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 also, it was supported by a grant from the Korea Science and Engineering Foundation grant (WCU program, 31-2008-000-10055-0) funded by the Ministry of Education, Science and Technology, Republic of Korea.

Keywords

Crosslinking agent
Electrochemical stability
Ionic conductivity
Lithium polymer batteries
Solid polymer electrolyte

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10.1007/s10008-009-0968-1

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title = "Solid polymer electrolytes based on crosslinkable polyoctahedral silsesquioxanes (POSS) for room temperature lithium polymer batteries",

abstract = "Solid polymer electrolytes (SPE), based on polyoctahedral silsesquioxanes (POSS) as a crosslinking agent, were prepared by radical polymerization. The ionic conductivity is greatly enhanced by introduction of crosslinkable POSS with multifunctional groups. The SPE prepared with 5 wt.% crosslinking agent shows an ionic conductivity of 5.3×10 -4 S cm -1 at room temperature. The content of nonvolatile plasticizer, poly(ethylene glycol) dimethyl ether, in the SPE, could be raised to 95 wt.% without any leakage. The SPE is found to be electrochemically stable up to 5.3 V. Lithium polymer cell consisting of Li/SPE/LiCoO 2 exhibits 80% of initial discharge capacity even at the rate of 0.1 C at room temperature after 20 cycles, which is a substantial improvement for practical consideration of lithium polymer batteries at room temperature.",

keywords = "Crosslinking agent, Electrochemical stability, Ionic conductivity, Lithium polymer batteries, Solid polymer electrolyte",

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 also, it was supported by a grant from the Korea Science and Engineering Foundation grant (WCU program, 31-2008-000-10055-0) funded by the Ministry of Education, Science and Technology, Republic of Korea.",

year = "2010",

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doi = "10.1007/s10008-009-0968-1",

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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 also, it was supported by a grant from the Korea Science and Engineering Foundation grant (WCU program, 31-2008-000-10055-0) funded by the Ministry of Education, Science and Technology, Republic of Korea.

PY - 2010/8

Y1 - 2010/8

N2 - Solid polymer electrolytes (SPE), based on polyoctahedral silsesquioxanes (POSS) as a crosslinking agent, were prepared by radical polymerization. The ionic conductivity is greatly enhanced by introduction of crosslinkable POSS with multifunctional groups. The SPE prepared with 5 wt.% crosslinking agent shows an ionic conductivity of 5.3×10 -4 S cm -1 at room temperature. The content of nonvolatile plasticizer, poly(ethylene glycol) dimethyl ether, in the SPE, could be raised to 95 wt.% without any leakage. The SPE is found to be electrochemically stable up to 5.3 V. Lithium polymer cell consisting of Li/SPE/LiCoO 2 exhibits 80% of initial discharge capacity even at the rate of 0.1 C at room temperature after 20 cycles, which is a substantial improvement for practical consideration of lithium polymer batteries at room temperature.

AB - Solid polymer electrolytes (SPE), based on polyoctahedral silsesquioxanes (POSS) as a crosslinking agent, were prepared by radical polymerization. The ionic conductivity is greatly enhanced by introduction of crosslinkable POSS with multifunctional groups. The SPE prepared with 5 wt.% crosslinking agent shows an ionic conductivity of 5.3×10 -4 S cm -1 at room temperature. The content of nonvolatile plasticizer, poly(ethylene glycol) dimethyl ether, in the SPE, could be raised to 95 wt.% without any leakage. The SPE is found to be electrochemically stable up to 5.3 V. Lithium polymer cell consisting of Li/SPE/LiCoO 2 exhibits 80% of initial discharge capacity even at the rate of 0.1 C at room temperature after 20 cycles, which is a substantial improvement for practical consideration of lithium polymer batteries at room temperature.

KW - Crosslinking agent

KW - Electrochemical stability

KW - Ionic conductivity

KW - Lithium polymer batteries

KW - Solid polymer electrolyte

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Solid polymer electrolytes based on crosslinkable polyoctahedral silsesquioxanes (POSS) for room temperature lithium polymer batteries

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Keywords

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