发明名称 |
METHOD FOR PREPARING HOMOGENEOUSLY SULFONATED POLY (ETHER ETHER KETONE) MEMBRANES BY THE CASTING METHOD USING ORGANIC SOLVENTS |
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.
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申请公布号 |
US2009092880(A1) |
申请公布日期 |
2009.04.09 |
申请号 |
US20080247599 |
申请日期 |
2008.10.08 |
申请人 |
SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION |
发明人 |
KIM DUK JOON;DO NGAN KHANH THI;CHO EUN BUM |
分类号 |
C08J5/22;H01M8/10 |
主分类号 |
C08J5/22 |
代理机构 |
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代理人 |
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地址 |
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