ChemSusChem. 2014 Mar;7(3):822-8. doi: 10.1002/cssc.201301060.
In situ synthesis is a powerful approach to control nanoparticle formation and consequently confers extraordinary properties upon composite membranes relative to conventional doping methods. Herein, uniform nanoparticles of cesium hydrogen salts of phosphotungstic acid (CsPW) are controllably synthesized in situ in Nafion to form CsPW–Nafion nanocomposite membranes with both improved proton conductivity and methanol-crossover suppression. A 101.3% increase of maximum power density has been achieved relative to pristine Nafion in a direct methanol fuel cell (DMFC), indicating a potential pathway for large-scale fabrication of DMFC alternative membranes.
原位合成是一种控制纳米颗粒形成的有力方法，相对于传统掺杂方法，它赋予了复合膜非凡的性能。在此，在 Nafion 中可控地原位合成了磷钨酸铯氢盐（CsPW）的均匀纳米颗粒，形成了 CsPW-Nafion 纳米复合膜，同时提高了质子电导率和甲醇渗透抑制性能。在直接甲醇燃料电池（DMFC）中，与原始的 Nafion 相比，最大功率密度提高了 101.3%，这为大规模制备 DMFC 替代膜提供了一种潜在的途径。
