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首页> 外文期刊>Materials Letters >Perchloric acid functionalized nano-silica and protic ionic liquid based non-aqueous proton conductive polymer electrolytes
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Perchloric acid functionalized nano-silica and protic ionic liquid based non-aqueous proton conductive polymer electrolytes

机译：高氯酸官能化纳米二氧化硅和质子离子液体基非水质子导电聚合物电解质

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Both protic ionic liquids (PILs) and superacids are known to be rich sources of protons and their good carrier as well. Herein, we report a novel approach in developing non-aqueous proton conductive nanocomposite electrolytes (PCNEs) by making composite of a PIL; diethylmethylammonium trifluoromethanesulfonate ([dema][TfO]) and a superacid; perchloric acid (HClO4). Initially, HClO4 was immobilized on nano-silica powders; and then both ([dema][TfO]) and HClO4 center dot SiO2 were incorporated into poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) matrix. X-ray diffraction and Fourier transform infrared (FTIR) spectroscopy suggest decrease in overall crystallinity of the composite membranes on addition of [dema][TfO]. Scanning electron microscopy (SEM) images show that microstructures such as spherulite structures and micropores on the membrane surface evolves with [dema][TfO] concentration. At 80 wt% of [dema][TfO], the density of pores appears on the membrane surface is maximum. The dc ionic conductivity is also observed to be increasing with [dema][TfO] concentration. The maximum conductivity of 0.02 mS cm(-1) and 0.6 m Scm(-1) are achieved at room temperature (30 degrees C) and 100 degrees C, respectively for 80 wt% of [dema][TfO]. This ionic conductivity variation is well correlated with the increase in pore density and decreasing crystallinity of the PCNE film. (C) 2019 Elsevier B.V. All rights reserved.
机译：已知质子离子液体（Pils）和超级酸含量富含质子和它们的好载体。在此，我们通过制造PIL的复合材料报告了一种在开发非含水质子导电纳米复合电解质（PCNES）的新方法;二乙基甲基三氟甲基磺酸盐（η[TFO]）和超级酸;高氯酸（HClO4）。最初，将HCLO4固定在纳米二氧化硅粉上;然后将（[DEMA] [TFO]）和HCLO4中心点SiO 2掺入聚（偏二氟乙烯 - 共六氟丙烯）（PVDF-HFP）基质中。 X射线衍射和傅里叶变换红外（FTIR）光谱表明，在添加[DEMA] [TFO]上，复合膜的整体结晶度降低。扫描电子显微镜（SEM）图像显示膜表面上的微观结构和膜表面上的微孔和微孔随浓度而演变。在80wt％的[Dema] [TFO]中，孔的密度出现在膜表面上最大。也观察到DC离子电导率随浓度的增加而增加。在室温（30℃）和100摄氏度中，在室温（30℃）和100℃下，为80wt％的ω[TFO]，最大导电率为0.02mS cm（-1）和0.6M SCM（-1）。该离子电导率变化与孔密度的增加和PCNE膜的结晶度的增加良好相关。 （c）2019 Elsevier B.v.保留所有权利。

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