Anion conductive polymers: new development for energy devices

在第一年，设计合成了基于三元共聚物的阴离子交换聚合物。选择六氟异亚丙基联苯和侧链含全氟亚苯基基团作为疏水组分，并选择含C2芴基的季铵化哌啶鎓作为疏水组分。聚合反应和随后的季铵化反应均进行良好，得到目标结构的高分子量三元共聚物，其通过NMR谱进行表征。采用溶液浇铸法制备了柔性薄膜。膜的离子交换容量可以通过简单地改变膜的组成来控制。目前，膜的性能正在研究中。测量包括氢氧根离子电导率及其温度依赖性、机械强度（应力对应变、动态机械性能及其温度/湿度依赖性）和碱性稳定性（在高温下的浓KOH溶液中，其中监测氢氧根离子电导率作为铵基团分解的量度。

In the first year, terpolymer-based anion exchange polymers were designed synthesized. Hexafluoroisopropylidene biphenylene and pendent perfluoro-containing phenylene groups were chosen as the hydrophobic components, and quaternized piperidinium containing C2 fluorenyl groups were chosen as the hydrophobic components. The polymerzation reaction and the following quaternization reaction both proceeded well to obtain high-molecular-weight terpolymers of targeted structure, which was characterized by NMR spectra. Flexible thin membranes were obtained by solution casting method. The ion exchange capacity of the membranes was controllable by simply changing the terpolymer composition. Currently, membrane properties are under investigation. The measurements include hydroxide ion conductivity and its temperature dependence, mechanical strength (stress versus strain, dynamic mechanical properties and their temperature/humidity dependence), and alkaline stability (in concentrated KOH solution at high temperature where the hydroxide ion conductivity is monitored as a measure of the decomposition of the ammonium groups.