高性能阴离子交换膜连续网络结构离子通道的构建与性能研究

阴离子交换膜（AEM）作为碱性聚电解质燃料电池的核心部件之一，其应用仍受制于低离子传导率和低稳定性。本申请提出基于“连续网络”思想的离子通道网络设计方法，拟通过物理共混、核-壳共聚和表面接枝，将少量的离子交换基团负载于热塑性聚合物微球(尺寸可低至约10 nm)表面或界面，巧妙利用聚合物微球的界面限域作用，通过热压，控制阳离子交换基团有序分散于热压后的相邻聚合物相区之间界面，构建三维连续的高效、稳定离子通道网络，并通过网络结构的调控，获得在极低离子交换能力（IEC）条件下，具有高离子传导率和高机械稳定性的优异AEM。

As a key component of alkaline polymer electrolyte membrane fuel cell, anion exchange membrane (AEM) still suffers from low ionic conductivity and low stability. This proposal proposes a novel design method to construct highly efficient ionic channel based on “continuous network”, i.e., to surface/interface functionalize polymer microspheres with a small amount of ionic exchange group through physical blending, core-shell emulsion copolymerization and surface grafting, then heat-press to form AEM, acquire highly efficient and stable 3-D ionic transport network with the interface confinement of polymer phases. Subsequently, tune the network structure to obtain excellent AEM with both high ionic conductivity and mechanical stability at a very low ionic exchange capacity (IEC).