Facile Fabrication Technique of Polymeric Ionic Liquids‐Coated Core–Shell Nanoparticles for Polymer Electrolyte Membranes
Facile Fabrication Technique of Polymeric Ionic Liquids‐Coated Core–Shell Nanoparticles for Polymer Electrolyte Membranes
复制标题
聚合物电解质膜用聚合物离子液体-包覆核-壳纳米粒子的简易制备技术
DOI：
10.1002/adsu.202300395
复制
发表时间：
2023
影响因子：
7.1
通讯作者：
Masuhara, Akito
中科院分区：
文献类型：
--
作者：
Tabata, Keisuke;Makino, Tsutomu;Matsuo, Yoshimasa;Sinkus, Rose;Masuhara, Akito
纳米颗粒和纳米纤维被广泛用作燃料电池膜聚合物电解质的组分，并报道了许多表面改性方法。然而，一些制造技术是复杂的，并且有必要开发简化且精确的控制方法。本文报道了一种制备核壳纳米粒子的简便方法，该核壳纳米粒子分层包覆有聚合物离子液体（PIL）和疏水聚合物作为聚合物电解质材料。SiO2纳米颗粒表面的分层聚合物层很容易通过重复几次基于沉淀聚合的简易聚合物涂层技术来构建。在80 °C和95%相对湿度下，核壳纳米粒子的最高质子电导率为1.3 × 10−2S cm− 1。虽然作为保护层涂覆的疏水聚合物降低了质子传导率，但PIL的形成增强了各种温度和湿度环境中的质子传导率。因此，所提出的方法使得能够容易地制造具有多种功能的聚合物层，例如质子传导PIL层和作为纳米颗粒表面上的保护层的疏水聚合物层。此外，它们有望应用于能源供应和气体分离，包括聚电解质，以实现可持续发展的社会。
Nanoparticles and nanofibers are widely used as components of polymer electrolytes for membranes in fuel cells, and many surface modification methods are reported. However, some fabrication techniques are complicated, and it is necessary to develop a simplified and precise control method. Herein, a facile fabrication method is reported for core–shell nanoparticles hierarchically coated with polymeric ionic liquids (PIL) and hydrophobic polymers as a material for polymer electrolytes. A hierarchical polymer layer on the surface of the SiO2nanoparticles is easily constructed by repeating the facile polymer‐coating technique based on precipitation polymerization several times. The highest proton conductivity of the core–shell nanoparticles is 1.3 × 10−2S cm−1at 80 °C and 95% relative humidity. Although the hydrophobic polymers coated as a protective layer reduce the proton conductivity, the formation of the PIL enhances the proton conductivity in various temperature and humidity environments. Therefore, the proposed method enables the facile fabrication of polymer layers with multiple functions, such as a proton‐conductive PIL layer and hydrophobic polymer layers as protective layers on the surface of the nanoparticles. Furthermore, they are expected to be applied to energy supply and gas separation, including polyelectrolytes, for the realization of a sustainable society.