公开(公告)号：US20090092880A1

公开(公告)日：2009-04-09

申请号：US12247599

申请日：2008-10-08

申请人： Duk Joon Kim ,  Ngan Khanh Thi Do ,  Eun Bum Cho

发明人： Duk Joon Kim ,  Ngan Khanh Thi Do ,  Eun Bum Cho

IPC分类号： C08J5/22 ,  H01M8/10

CPC分类号： C08J5/2256 ,  C08G65/48 ,  C08G2650/40 ,  C08J2371/12 ,  H01M8/1025 ,  H01M8/1072 ,  H01M2300/0082 ,  Y02P70/56

摘要： The present invention relates to a method for preparing PEEK electrolyte membrane which is sulfonated homogeneously by employing organic solvent casting method. The method of preparing PEEK according to the present invention consists of steps of: dissolving the dried PEEK in methyl sulfonic acid solution; diluting the prepared solution with sulfuric acid for sulfonation; precipitating, filtering and washing the obtained material; dissolving the obtained material in organic solvents; and solidifying the obtained material. The methanol permeability of the membrane is lowered by 1/10 to that of Nafion, and the Young's modulus of the membrane is increased by about 10 times while the ion conductivity is maintained at a constant state by employing the present method. Further, the properties of the electrolyte membrane are affected by the type of organic solvent selected.

摘要翻译： 本发明涉及一种通过使用有机溶剂流延法均匀地磺化的PEEK电解质膜的制备方法。 根据本发明制备PEEK的方法包括以下步骤：将干燥的PEEK溶解在甲磺酸溶液中; 用硫酸稀释制备的溶液进行磺化; 沉淀，过滤和洗涤所得材料; 将所得材料溶解在有机溶剂中; 并使所得材料固化。 膜的甲醇渗透性比Nafion降低了1/10，膜的杨氏模量增加了约10倍，而采用本方法将离子传导率保持在恒定状态。 此外，电解质膜的性质受所选择的有机溶剂的类型的影响。