3-メチルシドノンおよび3-エチルシドノンを含む三成分混合溶媒電解液のリチウム電池への応用 Electrolytic Properties and Application to a Lithium Battery of Ternary Solvent Electrolytes with Ethylene Carbonate -Dimethyl Carbonate- 3-Methylsydnone and 3-Ethylsydnone

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Abstract

<p>The electrolytic conductivity and charge-discharge characteristics of the lithium electrode were examined in ternary solvent systems made up of an ethylene carbonate (EC)-dimethyl carbonate (DMC) equimolar binary mixture with 3-methylsydnone (3-MSD) and 3-ethylsydnone (3-ESD). The electrolytes used were LiClO<sub>4</sub>, LiPF<sub>6</sub>, LiBF<sub>4</sub>, LiCF<sub>3</sub>SO<sub>3</sub>, LiN(CF<sub>3</sub>SO<sub>2</sub>)<sub>2</sub>, and LiN(C<sub>2</sub>F<sub>5</sub>SO<sub>2</sub>)<sub>2</sub>. The order of the decrease in conductivity of the ternary solvent electrolytes at a mol ratio 0.5 of 3-MSD and 3-ESD was LiPF<sub>6</sub>>LiClO<sub>4</sub>>LiN(CF<sub>3</sub>SO<sub>2</sub>)<sub>2</sub>>LiN(C<sub>2</sub>F<sub>5</sub>SO<sub>2</sub>)<sub>2</sub>>LiBF<sub>4</sub>>LiCF<sub>3</sub>SO<sub>3</sub>. The 1 mol dm<sup>3</sup> LiN(CF<sub>3</sub>SO<sub>2</sub>)<sub>2</sub> and LiN(C<sub>2</sub>F<sub>5</sub>SO<sub>2</sub>)<sub>2</sub> electrolytes with large anions showed moderate conductivities of higher than 6-7 mS cm<sup>−1</sup> at a mol ratio 0.5 of 3-MSD and 3-ESD. Addition of 3-MSD and 3-ESD to the EC-DMC equimolar binary mixtures containing LiClO<sub>4</sub>, LiBF<sub>4</sub>, LiCF<sub>3</sub>SO<sub>3</sub>, and LiN(CF<sub>3</sub>SO<sub>2</sub>)<sub>2</sub> is effective for raising lithium electrode cycling efficiency. We found by using scanning electron microscope (SEM) that the cycling efficiency is dependent on the dendrite formation and the morphology of the film formed on the Ni (working) electrode.</p>

Journal

  • Electrochemistry

    Electrochemistry 70(5), 334-336, 2002-05-05

    The Electrochemical Society of Japan

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Codes

  • NII Article ID (NAID)
    10008223591
  • NII NACSIS-CAT ID (NCID)
    AN00151637
  • Text Lang
    ENG
  • Article Type
    NOT
  • ISSN
    13443542
  • NDL Article ID
    6128494
  • 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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