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首页> 外文期刊>Advanced Functional Materials >Meso-SiO_2-C_(12)EO_(10)OH-CF_3SO_3H-A Novel Proton-Conducting Solid Electrolyte
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Meso-SiO_2-C_(12)EO_(10)OH-CF_3SO_3H-A Novel Proton-Conducting Solid Electrolyte

机译：介孔SiO_2-C_（12）EO_（10）OH-CF_3SO_3H-A新型质子传导固体电解质

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摘要

This paper describes the synthesis and characterization of a novel mesostructured solid electrolyte composite material, denoted meso-SiO_2-C_(12)EO_(10)OH-CF_3SO_3H. A lyotropic non-ionic surfactant-triflic acid-silicate liquid crystal is used as a supramolecu-lar template for a "one-pot" synthesis of the material. Within this structure, the oligoethyleneoxide head groups of the non-ionic surfactant that is imbibed within the channels of hexagonal mesoporous silica act in a crown-ether-like fashion towards the protons. The structure and dynamics of the silicate-oligo(ethylene oxide)surfactant-triflic acid co-assembly has been studied via several analytical techniques. These methods include polarized optical microscopy (POM), powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), multinuclear nuclear magnetic resonance (NMR) spectroscopy, thermo-gravimetric analysis (TGA), and Fourier transform (FT) Raman spectroscopy. Together these results imply that the protons coordinate to the oxygen atoms of the ethylene oxide units on the non-ionic surfactant and the compound has the structural integrity of the silicified liquid crystal. AC impedance spectroscopy was used to determine the proton conductivity of the meso-SiO_2-C_(12)EO_(10)OH-CF_3SO_3H composite material at different relative humidity values giving some insight into its potential utility as a proton conducting solid electrolyte in a proton-exchange membrane fuel cell.
机译：本文描述了一种新型的介观固体电解质复合材料的合成与表征，称为介观SiO_2-C_（12）EO_（10）OH-CF_3SO_3H。溶致非离子表面活性剂-三氟甲磺酸-硅酸盐液晶用作超分子模板，用于材料的“一锅法”合成。在这种结构中，吸收在六角形介孔二氧化硅通道内的非离子型表面活性剂的低聚环氧乙烷头基以类似冠醚的方式作用于质子。硅酸盐-低聚（环氧乙烷）表面活性剂-三氟甲磺酸共组装的结构和动力学已通过多种分析技术进行了研究。这些方法包括偏振光学显微镜（POM），粉末X射线衍射（PXRD），透射电子显微镜（TEM），多核核磁共振（NMR）光谱，热重分析（TGA）和傅里叶变换（FT）拉曼光谱学。这些结果加在一起意味着质子与非离子表面活性剂上的环氧乙烷单元的氧原子配位，并且该化合物具有硅化液晶的结构完整性。使用交流阻抗谱确定介孔SiO_2-C_（12）EO_（10）OH-CF_3SO_3H复合材料在不同相对湿度值下的质子电导率，从而了解其作为质子在质子中传导固体电解质的潜在用途交换膜燃料电池。

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