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首页> 外文期刊>Solid state ionics >Ionic conductivity in polyphosphazene polymer electrolytes prepared by the living cationic polymerization
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Ionic conductivity in polyphosphazene polymer electrolytes prepared by the living cationic polymerization

机译：通过活性阳离子聚合制备的聚磷腈聚合物电解质中的离子电导率

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Two polyphosphazene-based electrolytes were synthesized. The first was the polymer electrolyte poly [bis(methoxy-ethoxy-ethoxy-) phosphazene] (MEEP) with lithium triflate, the second was sodium salt of sulfonated poly[bis(phenoxyethoxy)phosphazene] (PhEP) as a polyelectrolyte. The "living" cationic polymerization of the monomer Cl3P-NSi(CH3)(3) was used to obtain the polymer precursor poly(dichlorophosphazene). The final polymers were obtained from the precursor by nucleophilic substitution. The monomer was synthesized via a recently reported route. The emphasis lied on testing the accessability and properties of electrolyte materials obtained by the newer synthetic techniques. The chosen synthetic approach proved to be a suitable and straightforward access to functionalized polyphosphazenes and therefore to corresponding polymer-based electrolytes.The ionic conductivity was studied by impedance spectroscopy in the temperature range between 20 and 70degreesC. The temperature dependence of the conductivity of MEEP/LiCF3SO3 is described by the Vogel-Tamman-Fulcher (VTF) equation. At 25degreesC, its conductivity was 10(-5) S cm(-1).The conductivity of the sodium salt of sulfonated PhEP was especially sensitive to a changing water partial pressure and is useful as humidity-sensitive sensor. In the presence of a water-saturated atmosphere, sulfonated PhEP showed a conductivity of 4.7 x 10(-2) at 25degreesC. (C) 2004 Elsevier B.V. All rights reserved.
机译：合成了两种基于聚磷腈的电解质。第一个是具有三氟甲磺酸锂的聚合物电解质聚[双（甲氧基-乙氧基-乙氧基-）磷腈]（MEEP），第二个是磺化聚[双（苯氧基乙氧基）磷腈]（PhEP）的钠盐作为聚电解质。单体Cl 3 P-NSi（CH 3）（3）的“活”阳离子聚合用于获得聚合物前体聚（二氯磷腈）。最终聚合物通过亲核取代从前体获得。通过最近报道的途径合成单体。重点在于测试通过新型合成技术获得的电解质材料的可及性和性能。事实证明，选择的合成方法是对官能化聚磷腈并因此与相应的基于聚合物的电解质的合适且直接的途径。通过阻抗谱在20至70摄氏度的温度范围内研究了离子电导率。 MEEP / LiCF3SO3电导率的温度依赖性由Vogel-Tamman-Fulcher（VTF）方程描述。在25°C下，其电导率为10（-5）S cm（-1）。磺化PhEP的钠盐的电导率对变化的水分压特别敏感，可用作湿度敏感传感器。在水饱和气氛下，磺化PhEP在25℃下的电导率为4.7 x 10（-2）。 （C）2004 Elsevier B.V.保留所有权利。

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