[Problem]
To provide an ionic-conductivity imparter for use in fuel cells each including an anion exchange membrane, the imparter keeping the ionic conductivity and the gas diffusion properties high and being capable of minimizing the swelling of the electrode catalyst layer in a post-crosslinking step to form a highly active catalytic electrode layer and obtain an excellent fuel-cell output.
[Solution]
A partially quaternized styrene-based polymer which contains given amounts of a constituent unit having a quaternary salt type anion-exchange group and a constituent unit having a haloalkyl group. Due to the polymer, the ionic conductivity and the gas diffusion properties are kept high and the swelling of the electrode catalyst layer in a post-crosslinking step can be minimized to form a highly active catalytic electrode layer and obtain an excellent fuel-cell output.
问题
提供一种用于燃料电池(包括阴离子交换膜)的离子传导阻抗器,该阻抗器可保持较高的离子传导性和气体扩散性,并能够在后交联步骤中最大限度地减少电极催化剂层的膨胀,从而形成高活性催化电极层,获得出色的燃料电池输出。
[解决方案]
一种部分季
铵盐化
苯乙烯基聚合物,它含有一定量的具有
季铵盐型阴离子交换基团的组成单元和具有卤代烷基的组成单元。由于这种聚合物具有较高的离子传导性和气体扩散性,在后交联步骤中可以最大限度地减少电极催化剂层的膨胀,从而形成高活性的催化电极层,获得出色的燃料电池输出。