Anion conductive polymers: new development for energy devices

阴离子导电聚合物：能源器件的新发展

• 批准号: 22KF0156
• 负责人: 宮武 健治
• 金额: $ 1.47万
• 依托单位: University of Yamanashi
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KF0156/
• 关键词: anion exchange membranes; fuel cells; water electrolyzers

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.

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亚苯基和侧含全氟亚苯基作为疏水组分，并选择含有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顺利进行，得到了具有目标结构的高分子量三元共聚物，并通过核磁共振谱对其进行了表征。通过溶液流延法获得柔性薄膜。通过简单地改变三元共聚物的组成即可控制膜的离子交换容量。目前，膜性能正在研究中。测量包括氢氧根离子电导率及其温度依赖性、机械强度（应力与应变、动态机械性能及其温度/湿度依赖性）以及碱性稳定性（在高温浓 KOH 溶液中，其中监测氢氧根离子电导率作为测量指标）铵基团的分解。

项目成果

山梨大学クリーンエネルギー研究センター燃料電池研究部門

山梨大学清洁能源研究中心燃料电池研究部