A new polysiloxane based cross-linker for solid polymer electrolyte

Yongku Kang, Junkyoung Lee, Dong Hack Suh, Changjin Lee

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

A new cross-linker, poly[siloxane-(g-oligo(ethylene oxide)-co-acrylate)], was synthesized and used to prepare the solid polymer electrolytes (SPE) by in situ thermal curing method with the addition of the ion-conducting plasticizers such as low molecular weight poly(ethylene oxide)dimethyl ether (PEGDME) and poly(siloxane-g-ethylene oxide) (PSi-PEG). Increase of conductivity and decrease of Tg were observed as increasing the content of plasticizer. The ionic conductivity was measured to be 7.13 × 10-4 S cm -1 with 70 wt.% PEGDME and 4.18 × 10-5 S cm -1 with 70 wt.% of PSi-PEG at 30 °C. The electrochemical stability window of the resulting solid polymer electrolyte could be extended to up to 4.5 V and 5.2 V for PEGDME and PSi-PEG, respectively. Thermal stability of polymer electrolyte was greatly enhanced with siloxane based plasticizer. The degradation of SPE with PSi-PEG started at ca. 350 °C. The SPE plasticized with PSi-PEG, which has good electrochemical stability and thermal stability, could be a promising solid polymer electrolyte for lithium polymer batteries.

Original languageEnglish
Pages (from-to)391-396
Number of pages6
JournalJournal of Power Sources
Volume146
Issue number1-2
DOIs
StatePublished - 2005 Aug 26

Fingerprint

Siloxanes
Silicones
Electrolytes
Polymers
Polyethylene glycols
Plasticizers
Ethylene Oxide
Ethylene
Thermodynamic stability
Oxides
Ionic conductivity
Polyethylene oxides
Curing
Ethers
Molecular weight
Ions
Degradation

Keywords

  • Ionic conductivity
  • Lithium batteries
  • Poly(siloxane-g-acrylate) cross-linker
  • Polymer electrolytes

Cite this

Kang, Yongku ; Lee, Junkyoung ; Suh, Dong Hack ; Lee, Changjin. / A new polysiloxane based cross-linker for solid polymer electrolyte. In: Journal of Power Sources. 2005 ; Vol. 146, No. 1-2. pp. 391-396.
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abstract = "A new cross-linker, poly[siloxane-(g-oligo(ethylene oxide)-co-acrylate)], was synthesized and used to prepare the solid polymer electrolytes (SPE) by in situ thermal curing method with the addition of the ion-conducting plasticizers such as low molecular weight poly(ethylene oxide)dimethyl ether (PEGDME) and poly(siloxane-g-ethylene oxide) (PSi-PEG). Increase of conductivity and decrease of Tg were observed as increasing the content of plasticizer. The ionic conductivity was measured to be 7.13 × 10-4 S cm -1 with 70 wt.{\%} PEGDME and 4.18 × 10-5 S cm -1 with 70 wt.{\%} of PSi-PEG at 30 °C. The electrochemical stability window of the resulting solid polymer electrolyte could be extended to up to 4.5 V and 5.2 V for PEGDME and PSi-PEG, respectively. Thermal stability of polymer electrolyte was greatly enhanced with siloxane based plasticizer. The degradation of SPE with PSi-PEG started at ca. 350 °C. The SPE plasticized with PSi-PEG, which has good electrochemical stability and thermal stability, could be a promising solid polymer electrolyte for lithium polymer batteries.",
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A new polysiloxane based cross-linker for solid polymer electrolyte. / Kang, Yongku; Lee, Junkyoung; Suh, Dong Hack; Lee, Changjin.

In: Journal of Power Sources, Vol. 146, No. 1-2, 26.08.2005, p. 391-396.

Research output: Contribution to journalArticle

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