本课题主要针对等离子体聚合膜制备的反应机理和成膜机理的不确定性及其电化学性能不理想等问题展开研究，结合过去几年项目组利用等离子体技术在材料制备和性能研究中所取得的成绩和积累的经验，提出行之有效和合理的实验解决方案，将进行以下研究内容：1）采用同步辐射真空紫外单光子电离技术结合分子束质谱技术研究等离子体放电的反应机理及等离子体聚合膜的成膜机理。2）利用高分辨同步辐射光电子能谱结合高分辨透射电子显微镜技术及小角X射线散射技术研究离子传输的纳米孔道的形成机制与调控方法；3）表面带孔氧化石墨烯纸复合等离子体聚合离子交换膜的制备和电化学性能优化。本课题的主要目标是利用同步辐射真空紫外单光子电离技术和分子束质谱技术弄清楚等离子体放电的反应机理及等离子体聚合膜的成膜机理。在此基础上，制备出高电导率、高稳定性的等离子体聚合离子交换膜。因此，本项目的实施对促进碱性离子交换膜的产业化具有十分重要的意义。

This proposal aims at resolving the problems associated with plasma polymerized membranes, such as the uncertainty of the mechanisms of plasma discharge reaction and the membrane formation during the plasma discharge, and their relatively low electrochemical performance. Based on our years of experience and achievements obtained in material preparation and characterization using the plasma technology, we will design effective and rational solutions to these problems through executing the following aspects of research in this proposed project: 1) Using synchrotron vacuum ultraviolet (VUV) photoionization and molecular-beam mass spectrometry techniques to investigate the mechanisms of plasma reaction and membrane formation during the plasma discharge; 2) Using high resolution synchrotron radiation photoelectron spectroscopy combined with high resolution transmission electron microscopy and small angle X-ray scattering (SAXS) to study the formation mechanism and controlling methods of nanosized channels in the composite membranes that can promote ion transport in the plasma polymerized membranes; 3) Synthesizing and optimizing plasma polymerized membranes deposited on the both sides of guanidinium-functionalized holey graphene oxide papers. The main focus of the proposed work is to employ synchrotron vacuum ultraviolet (VUV) photoionization and molecular-beam mass spectrometry techniques to clarify the mechanisms of plasma reaction and membrane formation during the plasma discharge. On this basis, proton exchange membranes comprising a guanidinium-functionalized holey graphene oxide paper with plasma polymerized polymers on its both sides will be fabricated. The membrane with such a structure is expected to be capable of significantly improving its performance as ion exchange membrane, such as high ion conductivity, low fuel permeability, etc. The project is therefore of great significance for fabrication of ion exchange membranes of high performance and promotion of industrialization of alkaline ion exchange membrane fuel cells.