Anion conductive polymers: new development for energy devices

第一年，设计合成了三元共聚型阴离子交换聚合物。疏水基组分为六氟亚丙基联苯和侧链全氟苯基，疏水基组分为含C2荧基的季铵盐基哌啶。聚合反应和随后的季胺化反应均顺利进行，得到了具有目标结构的高相对分子质量三元共聚物，其结构经核磁共振波谱表征。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三元共聚物的组成来控制。目前，膜的性能正在调查中。这些测量包括氢氧化物离子电导率及其温度相关性、机械强度(应力与应变、动态机械性能及其温度/湿度相关性)和碱性稳定性(在高温下浓KOH溶液中，氢氧化物离子电导率被监测为氨基分解的量度)。

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.