高性能離子交換膜構效關系、多離子傳導機理及其制備方法的研究年度總結報告

李先鋒　王保國　徐萬興　曹靜玉　袁志章

摘 要：在前期研究基礎上，成功開發出不同結構的膜材料，包括非氟離子交換膜、非氟多孔離子傳導隔膜及部分含氟隔膜材料等，并對其構效關系、成膜工藝進行了初步研究。2013年度圍繞離子交換膜氧化穩定性降解機理以及多孔離子傳導膜的構效關系和非氟離子傳導膜規模放大工藝以及放大過程中的基礎科學問題展開研究。闡明了非氟離子交換膜的降解機理、掌握了高選擇性、高電導率和高穩定性多孔離子傳導膜的構效關系，為液流電池離子交換膜的研究提供理論指導。在原創性提出多孔離子傳導隔膜的基礎之上，成功解決了非氟多孔離子傳導隔膜離子選擇性與傳導性地矛盾，開發出高選擇性、高穩定性非氟多孔離子傳導隔膜。建立了高性能低成本離子傳導膜的合成路線和工藝，確立膜材料的規模放大工藝，在一定程度上解決商業化全氟磺酸離子交換膜價格昂貴、離子選擇透過性差等缺點，加快了液流電池的商業化進程。

關鍵詞：非氟離子傳導膜 多孔離子傳導隔膜 構效關系 離子傳輸機理

Abstract：Based on our previous studies， membranes with different structures were successfully developed， including non-fluorinated ion exchange membrane， non-fluorinated porous ion conducting membranes， partially fluorinated membranes， and a fundamental study on the structure-property relationship and membrane preparation technology was conducted. In 2013， a series of researches were focused， including the degradation mechanism of ion exchange membrane， the structure-property relationship of porous ion conducting membrane， scaling technology of non-fluorinated ion transport membrane and basic scientific issues during the scaling process. The degradation mechanism of non-fluorinated ion exchange membrane was clarified， and the structure-property relationship of porous ion conducting membrane with high selectivity， high conductivity and high stability was mastered， offering the theoretical support for the development of membranes for flow battery. Based on the concept of porous ion conducting membrane we developed， the conflict between ion selectivity and ion conductivity of non-fluorinated porous ion conducting membrane was successfully resolved， and membrane with high selectivity and high stability was developed. The fabrication technology of ion conducting membrane with high performance and low cost was established， which to some extent overcomes the defects of high cost and low ion selectivity of commercially perfluorinated ion exchange membrane and accelerates the commercialization of flow battery.

Key Words：Non-fluorinate ions exchange membranes；Ions conducting porous membranes；Structure performance relation；Ions transport mechanism

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