Characterization of a Cross-linked Polymer Electrolyte Prepared from Oligo(ethylene glycol) methacrylates-Acrylonitrile

  • Lee, Chang-Ryoul (Department of Polymer Science, Kyungpook National University) ;
  • Hyun, Seok-Hee (Department of Polymer Science, Kyungpook National University) ;
  • Lee, Suk-Kee (Department of Polymer Science, Kyungpook National University) ;
  • Kim, Woo-Sik (Department of Polymer Science, Kyungpook National University) ;
  • Moon, Seong-In (Battery Technology Team, Korea Electrotechnology Research Institute) ;
  • Jin, Bong-Soo (Battery Technology Team, Korea Electrotechnology Research Institute)
  • Published : 2001.10.01

Abstract

A cross-linked solid polymer electrolyte was prepared by copolymerizing photochemically acrylonitrile (AN), oligo(ethylene glycol ethyl ether) methacrylate, oligo(ethylene glycol) dimethacrylate in the presence of lithium perchlorate as a lithium salt, ethylene carbonate-propylene carbonate as a mixed plasticizer, and poly(ethylene oxide) as a polymer matrix. The maximum ionic conductivity of the polymer electrolyte was 2.35$\times$10$\^$-3/ S/cm. The interface resistance of the polymer electrolyte was very low compared to that of the polymer electrolyte without AN. The former electrolyte was stable up to 4.3 V and the Ah efficiency was nearly 100% during the charge-discharge cycle.

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References

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