オリゴエレチンオキシドユニットを有するモノ-/ビス-オキセタンモノマーから調製される新規高分子固体電解質 Novel Polymer Electrolytes Based on Mono- and Bis-Oxetane Monomers with Oligo(Ethylene Oxide) Units

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Abstract

<p>New types of polymer electrolytes were prepared by cationic ring-opening copolymerization of bis-oxetane (R-O-(CH<sub>2</sub>CH<sub>2</sub>O)<i><sub>m</sub></i>-R, R = 3-ethyl-3-methylene oxetane unit, DDOE (<i>m</i> = 2), TrDOE (<i>m</i> = 3), TeDOE (<i>m</i> = 4)) and mono-oxetane (R-O-(CH<sub>2</sub>CH<sub>2</sub>O)<i><sub>n</sub></i>-CH<sub>3</sub>, TrMOE (<i>n</i> = 3), NoMOE (<i>n</i> = 9), DoMOE (<i>n</i> = 12)) with lithium salts as a catalyst, and were characterized by differential scanning calorimetry (DSC) and alternating impedance spectroscopy. The poly(oxetane)-based electrolytes had cross-linked networks with oligo(ethylene oxide) and 2-ethyltrimethylene oxide main chains and methoxyoligo(ethylene oxide) side chains. The polymer electrolytes prepared with LiBF<sub>4</sub> revealed high conductivity, compared to those done with LiPF<sub>6</sub> or LiN(C<sub>2</sub>F<sub>5</sub>SO<sub>2</sub>)<sub>2</sub>. The conductivities of the poly(oxetane)-LiBF<sub>4</sub> complexes depended on the mono-oxetane content and the length of oligo(ethylene oxide) in the mono- and bis-oxetanes. The oligo(ethylene oxide) side chains in the complexes acted as efficient plasticizing agents, particularly using NoMOE or DoMOE. Maximum conductivities of the polymer electrolytes with LiBF<sub>4</sub>([Li]/[O] = 0.045) revealed 9.1 × 10<sup>−6</sup> (TrMOE/DDOE mole ratio = 3.0) and 1.0 × 10<sup>−4</sup> S cm<sup>−1</sup> (NoMOE/DDOE = 1.72 and DoMOE/DDOE = 1.29).</p>

Journal

  • Electrochemistry

    Electrochemistry 70(4), 264-269, 2002-04-05

    The Electrochemical Society of Japan

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Codes

  • NII Article ID (NAID)
    10008009530
  • NII NACSIS-CAT ID (NCID)
    AN00151637
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    13443542
  • NDL Article ID
    6128185
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z17-14
  • Data Source
    CJP  NDL  J-STAGE 
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