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首页> 外文期刊>Thin Solid Films >Fabrication of ionic liquid polycrystalline nano thin films and their ion conducting properties accompanied by solid-liquid phase transition
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Fabrication of ionic liquid polycrystalline nano thin films and their ion conducting properties accompanied by solid-liquid phase transition

机译：离子液体多晶纳米薄膜的制备及其伴随固液相转变的离子导电性能

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摘要

Ionic liquid, ethyltrimethylammonium bis(trifluoromethylsulfonyl), (IL: [N-1112] [TFSA]) that has a melting point of 109 degrees C, was deposited at room temperature on alpha-Al2O3(0001) substrates by continuous-wave infrared laser deposition in a vacuum. No decomposition of IL molecules occurred during the thermal evaporation and the polycrystalline nature of the deposits at RT was found identical to that of the corresponding powder IL. The thin film IL (TF-IL) on a non-treated alpha-Al2O3(0001) substrate, with droplet-like shapes in morphology, exhibited almost no ionic conductivity even above the melting point because the IL would not spread over the non-treated substrate. In contrast, the TF-IL, with more dense, granular structures in morphology, deposited on a chemicallymodified, wettable alpha-Al2O3(0001) substrate, did exhibit a substantial ionic conductivity even at temperatures lower than the melting point, and it was then followed by a drastic increase of the ionic conductivity through its solid-liquid phase transition. The behaviors of the deposited IL growing and melting on the substrate are discussed based on the results of in situ laser microscope and ionic conductivity measurement experiments.
机译：室温下，通过连续波红外激光将熔点为109摄氏度的离子液体乙基三甲基铵双（三氟甲基磺酰基）（IL：[N-1112] [TFSA]）沉积在alpha-Al2O3（0001）基板上在真空中沉积。在热蒸发过程中没有发生IL分子的分解，并且发现在室温下沉积物的多晶性质与相应的粉末IL相同。未经处理的α-Al2O3（0001）衬底上的薄膜IL（TF-IL）具有液滴状的形态，即使在熔点以上，也几乎没有离子电导率，因为IL不会扩散到非处理过的基材。相反，沉积在化学改性的可湿性α-Al2O3（0001）基底上的TF-IL具有更致密的颗粒状结构，即使在低于熔点的温度下，也表现出了显着的离子电导率，然后通过其固液相转变极大地增加了离子电导率。基于原位激光显微镜和离子电导率测量实验的结果，讨论了沉积的IL在衬底上生长和熔化的行为。

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  • 来源
    《Thin Solid Films》 |2019年第1期|77-82|共6页
  • 作者

    Yoshii Aya; Maruyama Shingo; Toyabe Kaho; Takazawa Ryoji; Koganezawa Tomoyuki; Matsumoto Yuji;

  • 作者单位

    Tohoku Univ, Dept Appl Chem, Sch Engn, Aoba Ku, 6-6-07 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan;

    Tohoku Univ, Dept Appl Chem, Sch Engn, Aoba Ku, 6-6-07 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan;

    Tohoku Univ, Dept Appl Chem, Sch Engn, Aoba Ku, 6-6-07 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan;

    Tohoku Univ, Dept Appl Chem, Sch Engn, Aoba Ku, 6-6-07 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan;

    Japan Synchrotron Radiat Res Inst JASRI, SPring 8,1-1-1 Kouto, Sayo, Hyogo 6795198, Japan;

    Tohoku Univ, Dept Appl Chem, Sch Engn, Aoba Ku, 6-6-07 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Interface; Ionic liquid; Thin solid film; Ionic conductivity;

    机译：界面;离子液体;薄固体膜;离子电导率;

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