Synthesis, dynamic properties and electrochemical stability of organic-inorganic hybrid polymer electrolytes with double core branched structures based on polyether, cyanuric chloride and alkoxysilane

Hao Yiang Wu, Diganta Saikia, Hung Yu Chao, Jason Fang, Li Duan Tsai, Hsien Ming Kao

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A new organic-inorganic solid hybrid electrolyte based on 2,4,6-trichloro-1,3,5-triazine, triblock co-polymer poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol) bis(2-aminopropyl ether), poly(ethylene glycol) diglycidyl ether, and 3-(glycidyloxypropyl)trimethoxysilane doped with LiClO4 salt is synthesized by a sol-gel process. Fourier transform infrared spectroscopy and 13C NMR results reveal the successful synthesis of the organic-inorganic hybrid electrolyte. The conductivity of the hybrid electrolyte follows a VTF (Vogel-Tamman-Fulcher)-like behavior, implying that the diffusion of charge carriers is assisted by the segmental motions of polymer chains. The Li-ion mobility is determined from 7Li static NMR linewidth and diffusion coefficient measurements; both are correlated with their ionic conductivities. The maximum ionic conductivity of 9.5 × 10-5 S cm-1 at 30 °C is obtained for the hybrid electrolyte with the [O]/[Li] ratio of 32. The electrochemical stability window of 4 V ensures the hybrid electrolyte as a potential candidate for low voltage lithium ion batteries.

Original languageEnglish
Pages (from-to)30-40
Number of pages11
JournalElectrochimica Acta
Volume138
DOIs
StatePublished - 20 Aug 2014

Keywords

  • electrochemical stability
  • ionic conductivity
  • NMR
  • Organic-inorganic hybrid electrolyte

Fingerprint

Dive into the research topics of 'Synthesis, dynamic properties and electrochemical stability of organic-inorganic hybrid polymer electrolytes with double core branched structures based on polyether, cyanuric chloride and alkoxysilane'. Together they form a unique fingerprint.

Cite this