Abstract Phosphonic acid-based membranes were prepared by Plasma Enhanced Chemical Vapor Deposition (PECVD) with an input power of 100 W in a continuous or pulsed glow discharge. Comparing both kinds of plasma discharges makes appear that the pulsed configuration gives rise to PECVD materials with longer hydrocarbon chains and thus higher flexible polymer network which consequently present better sorption properties than those prepared from a continuous plasma discharge. Being more hydrophilic and richer in acidic functions than Nafion® 212, PECVD membranes (whatever the kind of plasma discharge, pulsed or continuous, during the deposition of films) present a better water sorption ability. Nevertheless, having a more highly cross-linked structure, they have a lower water diffusion/permeation capacity. Consequently PECVD membranes show singular water management properties which could be a great advantage for the final Proton-Exchange Membrane Electrolyte Cells and Proton-Exchange Membrane Fuel Cells applications.

中文翻译：

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等离子增强化学气相沉积膦酸膜对水的吸附和渗透

摘要 膦酸基膜是通过等离子体增强化学气相沉积 (PECVD) 在连续或脉冲辉光放电中以 100 W 的输入功率制备的。比较这两种等离子体放电，似乎脉冲配置产生了具有更长烃链的 PECVD 材料，因此具有更高的柔性聚合物网络，因此比连续等离子体放电制备的材料具有更好的吸附性能。与 Nafion® 212 相比，PECVD 膜（无论是脉冲式还是连续式等离子放电，在薄膜沉积期间）具有更好的亲水性和更丰富的酸性功能，具有更好的吸水能力。然而，由于具有更高的交联结构，它们具有较低的水扩散/渗透能力。