Abstract

Composite proton-conducting membranes based on perfluorinated short side chain polymers modified with nanodiamonds having a hydrophilic surface owing to grafted carboxyl groups have been produced. Membrane films are prepared by precipitating the polymer from a dimethylformamide solution with introduced nanodiamonds. The proposed method for synthesizing the composites provides a high mechanical strength and an increase in the proton conductivity of the material with an increase in temperature in a 20–50°С range at rather low diamond concentrations (0.25–1 wt %). These features are important for using the composites in fuel cells at high temperatures.

中文翻译：

---

功能化纳米金刚石的全氟化质子传导膜复合材料

摘要

制备了基于全氟化的短侧链聚合物的复合质子传导膜，该全氟化的短侧链聚合物被由于接枝羧基而具有亲水性表面的纳米金刚石改性。通过用引入的纳米金刚石从二甲基甲酰胺溶液中沉淀聚合物来制备膜膜。所提出的合成复合材料的方法可提供较高的机械强度，并且在较低的金刚石浓度（0.25-1 wt％）下，随着温度的升高，材料的质子电导率会在20-50°С范围内升高。这些特征对于高温下在燃料电池中使用复合材料很重要。